605-16959-I-MU-0011-04-MultiCorr MKII User Manual … · 2017-06-25 · MultiCorr MKII - User Manual Page: 8 2 REFERENCE DOCUMENTS The MultiCorr MKII portable corrosion monitoring

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MultiCorr MKII - PORTABLE CORROSION METER.

USER MANUAL

DOCUMENT NO. : C001-011 Tot. no. of pages: 125 PROJECT DOC. NO. :

04 29.04.96 For distribution MH LK MB 03 20.02.96 For use including SandLog Terminal

Functions

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02 02.02.96 For use including ML Terminal Function RGB RJ RGB 01 14.09.95 FOR ACCEPTANCE RGB RJ RGB 00 01.09.95 FOR INTERNAL CHECK RGB RJ

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MultiCorr MKII - User Manual Page: 2

WARRANTY CorrOcean warrants that the MultiCorr MKII Corrosion Instrument is free from manufacturing defects and will operate in accordance with the procedures detailed in this Users Manual. If during the first year, from the date of purchase, the MultiCorr MKII becomes defective due solely to poor workmanship or design CorrOcean will, at it's sole discretion, repair or replace the defective unit. Damage to the MultiCorr MKII due to misuse, physical damage or other abuse shall not be covered under any warranty repairs. The repair or replacement of batteries is not considered part of the one year warranty and is specifically excluded from any repair or replacement during the unit warranty period. Limitations of Liability Except for the express warranty statement above, CorrOcean grants no warranties, either expressed or implied, with regard to this product, including all implied warranties of merchantability and fitness for a particular purpose, and the stated express warranty is in lieu of all liabilities or obligations of CorrOcean for damages arising out of or in connection with the delivery, use or performance of the MultiCorr MKII product. CorrOcean assumes no responsibility for any economic or other losses incurred by the Purchaser, User or that any Third Party might experience from the use of the MultiCorr MKII , poor interpretation of readings, analysis of data obtained or from conclusions made based on use of the MultiCorr MKII . In no event shall CorrOcean be liable for lost profits or consequential damages even if CorrOcean is informed of the possibility of such damage. In no event will CorrOcean be liable for any claim or demand of a third party. Copyright 1995 by CorrOcean as, Trondheim, Norway IBM is a registered Trade Mark of the IBM Corporation


CONTENTS 1 INTRODUCTION 6 1.1 Capability and Functions 6 1.2 Probe Compatibility 7 1.3 Data Transmission To PC 7 1.4 Manual Use and Information 7 2 REFERENCE DOCUMENTS 8 3 HANDLING AND STORAGE 9 3.1 General 9 3.2 Packing 9 3.3 Initial Inspection 9 3.4 Storage 9 3.5 Charging 10 3.6 NiCd Batteries 10 3.7 Connecting to a Personal Computer 10 3.8 Connecting to a Probe 11 4 MULTICORR MKII INSTRUMENT 12 4.1 General 12 4.2 Entry Keys 12 4.3 Data Screen 13 4.4 Probe Identification System - Probes Measured by MultiCorr MKII 14 4.5 Probe Identification System - Probes measured by MultiLog 14 4.6 Probe Identification System - Probes Measured by SandLog 15 5 MENU DESCRIPTION 16 5.1 The Main Menu 16 5.2 Operator Mode 17 5.3 Advanced Mode 17 5.4 Terminal mode 18 5.5 Menu Paths 18 6 PROBE IDENTIFICATION AND METER SETUP 19 6.1 Selecting Probe Type and Assigning a Probe Number 19 6.2 Installing and Editing Probe Tag Identification 20 6.3 Reading Setup 22 7 DEFINING PROBE CHARACTERISTICS AND PARAMETERS 25 7.1 General 25 7.2 Entering Electrical Resistance (ER) Probe Parameters 26 7.3 Entering Linear Polarization Resistance (LPR) Probe Parameters 28 7.4 Entering Galvanic Probe Parameters 29 7.5 Entering Analog Probe Parameters 30 7.6 Entering Polarization Parameters 31 8 PROBE MEASUREMENTS 33 8.1 Taking A Reading In The Operator Mode 33 8.2 Taking A Reading In The Advanced Mode 34 9 PROBE MEASUREMENT READINGS AND DISPLAY


INFORMATION 35 9.1 General 35 9.2 Measurement Error Messages 35 9.3 Selecting The Probe to Be Monitored 35 9.4 Raw Data and Final 36 9.5 Monitoring Electrical Resistance (ER) Probes 37 9.6 Monitoring Linear Polarization Resistance (LPR) Probes 38 9.7 Monitoring Galvanic Probes 39 9.8 Monitoring Analog Probes, Reference Electrodes and CP Systems 40 9.9 Polarization Readings 41 10 DISPLAYING MEASUREMENT DATA 43 10.1 Selecting A Probe 43 10.2 Displaying Raw Data 43 10.3 Displaying Readings 44 10.4 Displaying ER Probe Corrosion Rate 44 11 MultiCorr MKII SYSTEM FEATURES 46 11.1 Memory and Status 46 11.2 Setting Date and Time 46 11.3 System Reset and Default Settings 47 11.4 Clearing The Memory 48 11.5 Changing The Pass Code 49 12 TRANSMITTING READINGS TO A COMPUTER 50 12.1 Data Reception Software 50 12.2 Transmission Cable Connections 50 12.3 Specifying Data to be Transmitted 51 12.4 Setting the Transmission Speed 51 12.5 Starting Data Transmission 52 12.6 Data Transmission Troubleshooting 52 13 AUTOMATIC READINGS 53 13.1 General 53 13.2 Selecting Reading Intervals 53 13.3 Selecting A Probe For Automatic Readings 54 13.4 Starting Automatic Readings 54 13.5 Stopping Automatic Readings 54 13.6 Automatic Reading Technical Information 55 14 TERMINAL MODE 56 14.1 Global settings for MultiCorr MKII 56


15 TERMINAL MODE - MULTILOG 57 15.1 MultiLog Terminal Main Menu 57 15.2 Logger Manager 58 15.3 Transfer Data 70 16 TERMINAL MODE - SANDLOG 77 16.1 SandLog Terminal Main Menu 77 16.2 Logger Manager 78 16.3 Transfer Data 87 APPENDIX A: MultiCorr MKII Specifications 95 APPENDIX B: ER Probe Technical Information 97 APPENDIX C: LPR Probe Technical Information 105 APPENDIX D: Galvanic Probe Technical Information 111 APPENDIX E: Analog Probe Technical Information 113 APPENDIX F: Potentiostatic and Potentiodynamic Procedures 114 APPENDIX G: MultiCorr MKII Error Messages 115 APPENDIX H: Service and Technical Information Sources 117 APPENDIX I: Hazardous Area Certificate 118 APPENDIX J: MultiCorr MKII Menu Pattern 123


1 INTRODUCTION The MultiCorr MKII is a software based, computerized, hand held corrosion meter and data acquisition unit suitable for the interrogation of different types of corrosion probes. It is housed in a rugged rubber coated housing that is splash resistant and intrinsically safe. Each MultiCorr MKII can be individually configured to the user's specific needs at the time of purchase. Additionally, the unit can have its software upgraded at any time to add Functions which were not included at the time the unit was purchased. Each MultiCorr MKII has the capacity to store up to 3,000 sets of readings. Readings may be stored in memory along with a unique probe number, an alphanumerical tag designation, along with an automatically generated reading date and time. Written records are not required, but can be easily maintained. 1.1 Capability and Functions The MultiCorr MKII is capable of monitoring a wide variety of corrosion probes, so there is no need to purchase or use different corrosion monitoring instruments when measuring different types of corrosion probes. Shown below is a summary of the Functions available in the MultiCorr MKII Instrument. Function Capability ER Probe Read and Monitor Electrical Resistance Probes LPR Probe Read and Monitor Linear Polarization Probes Galvanic Probe Read and Monitor Galvanic Probes Analog Probe Read and Monitor Reference Electrodes, Monitored

Anodes, Temperature and Pressure Sensors Polarization Conduct several types of polarization measurements. Potentiostatic, potentiodynamic and cyclic polarization may be performed. Automatic Conduct Automatic Readings at Uniform Time Intervals Terminal Function for MultiLog Setup of MultiLog Stations, data transfer from MultiLog to the

MultiCorr MKII, data transfer from the MultiCorr MKII to PC, etc. Terminal Function for SandLog Setup of Sandlog Stations, data transfer from SandLog to the

MultiCorr MKII, data transfer from the MultiCorr MKII to PC, etc. The user can include all of the above Functions in a single instrument or chose any possible combination of Functions at the time of purchase. For instance, you may configure an instrument to read only ER Probes and take automatic readings or have an instrument that can read ER, LPR and Galvanic Probes, take Automatic readings and perform Polarization measurements. The MultiCorr MKII can grow with your operations since any Function which was not included when the unit was delivered may be added at a later date.


1.2 Probe Compatibility The MultiCorr MKII is a versatile instrument which accepts corrosion probes of different designs and from different manufacturers. There are default settings within the MultiCorr MKII for each type of probe, and the user can easily modify these settings so that any probe can be read regardless of the manufacturer. Because of variations in the size and type of connectors it may be necessary to have different cables for different manufacturers. When ordering, please specify the manufacturer and probe type and CorrOcean will provide the required probe cables to suit the user's needs. 1.3 Data Transmission To PC The MultiCorr MKII can communicate directly with any IBM compatible Personal Computer (PC), which has been loaded with the CorrOcean Corrlist Software provided with the MultiCorr MKII. It can also communicate directly with other CorrOcean Software programs such as CorrTrend and CorrChart . CorrTrend is an advanced corrosion data management program and CorrChart can be utilized to automatically plot and present polarization curves. Data transfer to the PC can be performed using either direct data transfer cables or via a modem. When used as a terminal, the data are transferred into the CorrOcean software MultiCom or SandRater (for MultiLog and SandLog data respectively) 1.4 Manual Use and Information This manual includes information on the use of every feature of the MultiCorr MKII Instrument. The manual provides details on the use of functions which may not have been included in the MultiCorr MKII purchased by the user. Any MultiCorr MKII function may be added to your instrument after it has been purchased. Call the nearest CorrOcean office listed in the back of this manual for more information on how to upgrade your MultiCorr MKII. It is recommended that the MultiCorr MKII Instrument be used while reading this manual so that the various options may be tried as the user is reading the manual.


2 REFERENCE DOCUMENTS The MultiCorr MKII portable corrosion monitoring system and related software are also described in the following documents, available from CorrOcean. Descriptive Literature MultiCorr MKII Corrosion Meter Data Sheet 155 CorrTrend Software Data Sheet 154 MultiCorr MKII/CorrChart Software Data Sheet 156 MultiLog Data Sheet 158 The CorrOcean Sand Monitoring System Data Sheet 180 Operating Manuals Corrlist Software User Manual Document No.: 89-3-174 CorrTag Software User Manual Document No.: 91-3-242 CorrTrend Software Inst. and User Manual Document No.: (A): 87-3-016, (M): 87-3-032 CorrChart Software User Manual Document No.: 89-3-193 MultiCom - User Manual Document No.: 93-3-340 MultiLog Stations - Installation/Operation/Maintenance Manual Document No.: 94-3-341 SandRater - Sand Monitoring Program Operating Manual Document No.: 0200-101 Installation Procedure Sand Monitoring System Document No.: 2072-044 CorrOcean Sand Monitoring System User and Maintenance Manual Document No.: 2072-029


3 HANDLING AND STORAGE 3.1 General The MultiCorr MKII is built into a rugged splash proof case and is designed for operation in an offshore, industrial and/or hazardous environment. Carefully selected materials have been used to meet these requirements. For example, the application of a silicone rubber cover on the bottom part provides thermal insulation, shock absorption and a friction mantle. The silicone rubber can withstand environmental temperatures up to 550°F (300°C). However, the user must remember this is an electronic instrument and if it is left on a hot surface and the internal temperature is allowed to exceed 160°F (70°C), the instrument may be permanently damaged. The specifications on the MultiCorr MKII are described in APPENDIX A "MultiCorr MKII Specifications". 3.2 Packing The instrument comes complete with a battery charger, PC data transmission cable, Corrlist software and a users manual. All of the components are packed in a plastic transportation case filled with shock absorbing foam. The plastic case is meant for shipment and storage only, and is not intended for use in a hazardous area. 3.3 Initial Inspection The instrument was carefully inspected both mechanically and electronically prior to shipment. It should be free of physical damage upon receipt. To confirm this, the instrument should be inspected for any damage that may have occurred during shipment. If any damage is observed please contact CorrOcean immediately. 3.4 Storage The instrument may be stored or shipped in environments within the following limits: Temperature: -5°F to 160°F (-20°C to 70°C) Humidity: Up to 95% The instrument must be protected from extreme temperatures which may cause condensation to form within the instrument case. It is recommended that the instrument is stored in a dry, cool place (not colder than -5°F (-20°C)) to minimize battery discharge. To prevent loss of stored data and keep the internal clock running, recharging should be carried out at least once every 3 months. This recharging should be more often if the unit is stored at temperatures beyond 85°F (30°C) or if the battery is old.


3.5 Charging Charging time for empty batteries is approximately 12 hours. The instrument may also be operated during charging. Charging should only take place in nonhazardous areas. LOW BATT is displayed on the instrument's status line when the battery charge drops below a certain limit. The batteries should be recharged as soon as possible after this. If operation continues, the power will automatically be switched off when the voltage drops below the secure operation limit. The automatic switch off function is to insure that there is sufficient battery charge to save stored data. If the instrument has automatically switched itself off under these conditions, it will not be possible to make measurements until it has been recharged. NiCd batteries can occasionally develop a "memory" which limits the available user time. If this occurs deplete the battery through use and then recharge. This process of draining the battery and recharging may have to be repeated. 3.6 NiCd Batteries The MultiCorr MKII NiCd batteries have a design life of 3 to 5 years depending on the use and care. The battery package was made especially for the MultiCorr MKII instrument and are designed not only for a specific power usage but also for use in a hazardous environment. Changing the battery should only be conducted by personnel authorized by CorrOcean, to insure that the hazardous area requirements are maintained. Warning: NiCd batteries slowly loose their charge even when not in use. For this reason it is

important to charge the batteries at least every 3 months, even if the MultiCorr MKII is not being utilized.

If the NiCd batteries are not recharged when the LOW BATT Warning appears it is possible that

stored data may be lost if the battery charge level drains below the minimum level necessary to maintain the MultiCorr MKII memory.

The battery voltage can be seen by selecting STATUS in the system or acq. setup menues. Both the positive and the negative battery should be at more than 6.25 V when they are charged. The voltages are however depending on the temperature. 3.7 Connecting to a Personal Computer The battery charging cable also contains a cable branch for connecting it to a PC RS-232 port. The MultiCorr MKII may be connected to a PC for data transfer whether or not the battery charger is connected to an outlet. It is recommended that the charger be connected when data transmission is being accomplished, but this is not required. The standard connector on the PC Data Cable is a 25 pin, female connector. Some computer ports may require the use of a 9 pin female connector, in which case an adapter may be utilized. Connection to a PC should only take place in nonhazardous areas.


3.8 Connecting to a Probe The MultiCorr MKII is connected to the probe using a flexible retractable probe cable. The probe cable and connector assembly will be different for the different probe types, and may also be different for probes from different manufacturers. Probe cables can be supplied by CorrOcean according to user's specifications. For most commercial corrosion probes, probe cables can be supplied on short notice. Please contact CorrOcean for more information. The probe cable has an 11 pin male Fisher connector on the instrument side. There is a white orientation dot on the Fisher connector that should be visible on the top of the connector when inserting the cable into the MultiCorr MKII. Always insert and remove the cable by grasping the connector housing and never pull directly on the cable itself. The internal wiring of probe cables may be different even when the connector appears to fit the probe. Make sure that both the probe and cable are compatible for both probe type (e.g. ER, LPR) and manufacturer. NOTE: The instrument housing is electrically conductive. When measuring on LPR and galvanic probes, the instrument must be held in the hand, or otherwise electrically isolated from ground.


4 MULTICORR MKII INSTRUMENT 4.1 General The user interface of MultiCorr MKII is implemented with an efficient and easy to learn on screen menu system. In this manual the definition of a menu is a list of functions which can be selected with a single numerical key entry. Throughout this manual the keyboard entries are enclosed in brackets [ ] to distinguish them from other numerical listings. The definition of a window is a display screen with specified contents. Probe information may also be edited or new information may be added utilizing CorrOcean's CorrTag Software which is described later in this manual. Since the MultiCorr MKII can store hundreds of different probes in its memory the operator will learn how to select a specific probe so that readings are calculated and stored for that specific probe. In this manual the probe which is ready to accept and store readings at any given time is referred to as the Active Probe. 4.2 Entry Keys The key board on the MultiCorr MKII is generally self descriptive but it is helpful to understand the use of these keys as they are used the MultiCorr MKII. Key Use Description [On/Off] On or Off Use to turn the MultiCorr MKII screen on or off. The MultiCorr

MKII has an internal battery saver which will turn off the instrument if no key is pressed within 2 minutes of the last key entry.

[Del] Delete This key is used to delete the last erroneous character entered.

You may also use the left arrow key to make a deletion. [Exit] Exit The [Exit] key is used to leave a menu or a window. Terminating

data entry with the [Exit] key leaves the previous value unchanged. [Ent] Enter When entering parameters such as probe numbers or the surface

area of an LPR Probe electrode, the input must be terminated with the [Ent] key. The input value will not be accepted until the entered value is within legal limits. When an illegal entry is made, the display cursor will return to the first position in the input field and a new value may be entered.


Arrows Up/Down Once probe parameters have been entered into the unit the operator can

display the next probe in sequence by pressing the down arrow or returning to a prior probe with the up arrow.

When the menu is set to display data the operator can move through the reading summary using the

Up and Down arrows. These arrows are also utilized when selecting the alphanumeric tag numbers. This use is described

more fully later in the manual. Arrows Left/Right The left arrow may be used to delete an erroneous character entry. These

arrows are also utilized when selecting the alphanumeric tag numbers. This use is described more fully later in the manual.

4.3 Data Screen The MultiCorr MKII uses a Liquid Crystal Display (LCD) screen. As a battery saving feature the screen will automatically go blank if no key has been pressed during any two (2) minute interval. The screen will also go blank during the periods between automatic readings. The LCD display utilizes a standard pattern for the display of information. Line Location Description First Line Provides the name of the menu. This corresponds to the previous

selection. Second Line This is a warning information line. When the battery is low a

"LOW BATT" warning will appear. When the instrument is set to automatically take readings an "AUTO-ON" Warning will appear. Additionally, if the MultiCorr MKII memory is full a "MEMORY FULL" Warning is displayed.

Lines 3-8 Menu selection alternatives are listed when a menu is displayed.

When the unit is in an operational mode, the last two lines (7-8) display the Active Probe in memory. Both the probe number and tag number are displayed.

Line 3-8 is also used to display any electrical measuring errors which may be detected by the

MultiCorr MKII. The meaning of these error messages is provided in APPENDIX G - MultiCorr MKII Error messages.


4.4 Probe Identification System - Probes Measured by MultiCorr MKII The MultiCorr MKII uses a standard method to identify each probe so that the user can readily identify the probe which is being interrogated. It is important for the user to understand this identification system prior to reading the manual. The following identification labels have a specific meaning that is described below. Probe No Each probe is assigned a unique number that includes both the type of Probe (e.g.

ER, LPR, Galvanic) and a number from 0 to 99. For instance ER 23, LPR 99 or Glv 0. All ER Probe Numbers will start with "ER" and all LPR Probe Numbers will start with "LPR".

The MultiCorr MKII will distinguish between probes of the same type by the number following the probe type designation. A total number of 200 different probes may be defined.

Probe Numbers must be assigned before the MultiCorr MKII will take a reading. Tag No The Tag Number allows the user to assign a name to each probe that can assist in

identifying the probe. The Tag Number may be up to 10 alphanumeric characters in length. For instance, the user could tag probe ER 12 with the additional identification of "Riser A67". When this probe is selected the MultiCorr MKII screen would display the following as the Active Probe.

Probe: ER 12 Tag No: Riser A67 Tag Numbers are not required to be entered before the MultiCorr MKII takes a reading.

However, it is recommended that Tag Numbers are assigned. 4.5 Probe Identification System - Probes measured by MultiLog The probes measured by MultiLog are identified by tag no. etc. as defined in the MultiCom software (it is referred to document 93-3-340 for description of the probe identification system). However, to reduce complexity and data amount to be transferred, tag numbers etc. are not given in the probe identification in the MultiLog stations and Terminal. Identification of the probes are given by MultiLog station no, probe type and number. Probe number starts at 1 for each probe type for each logger. When MultiLog data are stored in the MultiCorr MKII memory, "tag number" will be automatically generated. This number is used only for display of probe data and is not transmitted when data are sent to PC. However, these tag numbers will be part of the total capacity of 200 tag numbers, and are cleared by reset of the MultiCorr MKII only (please see section 11.3 for reset instructions).


4.6 Probe Identification System - Probes Measured by SandLog The probes measured by SandLog are identified by the SandLog address and probe number. A SandLog is measuring one or two sand probes. A sand probe may have 2, 3 or 4 measuring elements, and each element is displayed individually. SandLog address and probe number must be defined before measurements are initiated, please see section 16.2.3 for logger setup. Also see figure 32 for data display in SandLog. The corresponding sand probe identification is found when data is transferred to the MultiCorr MKII. Section 16.3.3 describes display of the stored data, an example is shown in figure 37. For complete sand monitoring system setup, it is referred to "SandRater Sand Monitoring Program Operating Manual".


5 MENU DESCRIPTION 5.1 The Main Menu The MultiCorr MKII Main Menu is displayed when the meter is turned on. This menu allows the user to select two operating modes which are defined as the "Operator Mode" and the "Advanced Mode" . Operator Mode This is a limited use mode designed to allow only field measurements and

storage. This limited operational mode permits the user to quickly take readings without the need to utilize the expanded menu selection.

Advanced Mode This menu mode allows the corrosion specialist to set probe parameters,

take automatic readings, set engineering units, transmit data to a PC and perform a wide variety of specialized operations. Some areas of this menu are protected by a pass code to insure that inadvertent changes are not made to the system. Field measurements may also be taken using the mode.

Terminal Mode This menu mode allows setup of CorrOcean MultiLog and/or SandLog

stations, check of data and data retrieval from MultiLog/SandLog and data transfer to relevant PC software. Some areas of this menu are protected by a pass code to insure that inadvertent changes are not made to the system.

Shown in Figure 1 is the Main Menu of the MultiCorr MKII. To enter either the Operator Mode or the Advanced Mode the user simply presses the corre-sponding selection number located in front of the desired selection. The MultiCorr MKII will immediately move to the first menu level for that operating mode. Figure 1 shows the menu with five (5) types of probe functions and terminal function installed. Only the functions which are actually installed in the user's MultiCorr MKII will be displayed.

*** MultiCorr MKII *** Probes: ER - LPR Glv - Ana Pol 1: Operator Mode 2: Advanced Mode 3: Terminal Mode Figure 1


5.2 Operator Mode There are only 2 possible selections in this mode. The user can either decide to take a measurement on the Active Probe or change the Active Probe prior to making a measurement. The details on how to install probe information, take measurements and store the results are provided later in this manual. Shown in Figure 2 is the Operator Mode Main Menu Window. Details on making measurements are provided in Section 8.0. 5.3 Advanced Mode The Advanced Mode allows the user to make measurements in the same manner as the Operator Mode and also allows the use of the advanced capabilities in the MultiCorr MKII. The most sensitive functions in the Advanced Mode are protected with a pass code to prevent data loss or corruption caused by unauthorized operators. Shown in Figure 3 is the Advanced Mode Main Menu Window. There are six (6) general capabilities that can be accessed through the use of the Advanced Mode. The use of these capabilities are described in more detail later in this manual. For now it is only important to understand the general capabilities of the MultiCorr MKII and how these are arranged in the menu structure. 1. Acquisition Setup This menu route allows the user to enter the various parameters for each

type of probe, enter the tag identification and establish data reading variables such as the type of engineering units.

2. Measure The user can take field measurements exactly the same way as it is accom-

plished in the Operator Mode. 3. Show Data The user can view all the stored readings for any probe including raw data,

calculated results and corrosion rates. 4. System Setup This menu route allows the user to set the date and time, clear the memory

of readings, clear the unit of probe parameters, change the pass code and also check the remaining memory.

5. Transmit This feature allows the stored data to be transferred to a computer.

* MEASURE * 1: Measure 2: Select Probe Probe = ER 12 Tag No: Riser A67 Figure 2

* MAIN MENU * 1: Acq. Setup 2: Measure 3: Show Data 4: System 5: Transmit 6: Automatic Figure 3


6. Automatic THIS IS AN OPTIONAL FUNCTION THAT MAY NOT APPEAR ON ALL UNITS. It allows the user to automatically take and store readings at regular intervals. This function may be added to any MultiCorr MKII.

5.4 Terminal mode The choice of terminal mode allows user to use the MultiCorr MKII as a terminal for MultiLog and/or SandLog stations (depending on which functions installed). If both terminal functions are installed the choice of terminal mode will bring you into a submenu where you can choose between SandLog and MultiLog terminal. When used as a Sand Terminal you cannot operate MultiLog stations and vice versa. If only one terminal function is installed the above mentioned submenu is skipped, and you are brought directly into the installed terminal menu. 5.5 Menu Paths As menu selections are made, the MultiCorr MKII will move to the next appropriate menu. This means that if the MultiCorr MKII needs additional information (For instance, probe parameters) it will automatically move to the appropriate menu. When the unit has the necessary information to proceed with an entry it will skip unnecessary menus. This feature saves the user time and minimizes confusion. There are some general rules which will assist your understanding of this manual and which are applicable to all menus. 1. Throughout this manual the keyboard entries are enclosed in brackets [ ] to distinguish

them from other numerical information listings. 2. The Enter Key [Ent] is used to confirm your entry and to move to the next screen. 3. The Exit Key [Exit] is used to leave the entries unchanged and moves you forward in the

menu path.


6 PROBE IDENTIFICATION AND METER SETUP There are general procedures that apply to all probes and these procedures are discussed in this section. Additionally, the user will learn how to check the operational status of the MultiCorr MKII and select the type of engineering units which are to be used for the probe readings. The intent of this section of the manual is only to familiarize the user with general procedures for identifying and labeling all types of probes. Section 7 takes the operator on a step by step procedure for entering the parameters for each specific type of probe. Before taking any measurements the user must assign a unique number to each probe. This number will define the type of probe (For instance ER or LPR) and allow the MultiCorr MKII to know where the readings will be stored. At the same time that probe number is assigned you may also assign a location name, called a Tag Number, to assist you in recognizing the probe you are measuring. Note that if a Tag Number is not assigned, it is possible to enter the Operator Mode and change the probe parameters without entering the Pass Code. To protect the probe parameter setup, a Tag Number must be assigned for the probe. All of the steps necessary to complete each operation are given along with the keys that need to be pressed and the results that will be obtained. 6.1 Selecting Probe Type and Assigning a Probe Number This procedure allows the user to assign a Probe Number without also assigning an identifying Tag Number. Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [2] Go to Advanced Mode 3 [1] Go to Acquisition Set Up 4 [1] To Edit Probe 5 [Pass Code number] Enter your personal passcode 6 [Ent] Enter pass code and move to next menu 7 [1] To select a Probe Type 8 [1] through [5] Select the type of probe which will be assigned a number NOTE: Since every MultiCorr MKII is configured for each user, the meter you are using may not have 5 options from which to select. For your general information the five (5) possible key selections and the respective probe functions are as follows: [1] ER [4] Analog [2] LPR [5] Polarization types [3] Galvanic In addition, the two teminal modes, MultiLog and SandLog, are available functions.


9 [Ent] To move to Next Menu Screen 10 Enter Any No. 0 - 99 The user can assign any number from 0 through 99. The numbers

do not have to be consecutive. It is often helpful to assign the numbers in the same sequence that the operator encounters the probes while taking field readings. HINT: If additional probes will be added to the reading circuit, skip some numbers so consecutive number spaces will be available at a future date.

11 [Ent] Enters the number you selected. From this point on the entries depend on the type of probe being utilized. Section 7 of this manual provides details on how to enter the parameters for each type of probe. The same steps as shown above will be repeated, but the background information will be excluded. 6.2 Installing and Editing Probe Tag Identification The MultiCorr MKII provides two (2) Methods for installing Tag Numbers and probe parameters. 1. Manual installation through the use of key entries on the MultiCorr MKII. 2. Automated downloading of probe files through the use of CorrTag Software. 6.2.1 Manual Probe and Tag Number Entry Using The MultiCorr MKII This procedure allows the user to assign a Probe Number and also assign an identifying Tag Number. Generally, this is a preferred manual procedure to just assigning a probe number as shown above in Section 6.1. However, to assign a Tag Number using the MultiCorr MKII the user must know the pass code assigned to that particular MultiCorr MKII. Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [2] Go to Advanced Mode 3 [1] Go to Acquisition Set Up 4 [1] Edit probe 5 [Pass Code Number] Enter your personal passcode 6 [Ent] To Enter Pass Code and move to the next Menu 7 [1] To Select Probe 8 [1] through [5] Select the type of probe which will be assigned a number 9 [Ent] Enter the probe type you selected 10 Enter Any No. 0 - 99 The user can assign any number from 0 through 99. The numbers

do not have to be consecutive. It is often helpful to assign the numbers in the same sequence that the operator encounters the probes while taking field readings. HINT: If additional probes will be added to the reading circuit, skip some numbers so consecutive number spaces will be available at a future date.

11 [Ent] Enters the number you selected. NOTE: As explained in Section 6.1 above, at this point the available functions in each MultiCorr MKII will vary. 12 [2] Edit Tag no.


Figure 4 shows the Edit Tag Number window through which an identifying Tag Number may be assigned. Tag Numbers may be up to 10 characters long. To keep the meter as simple as possible, the MultiCorr MKII does not have an alphanumeric keyboard. The alphabet is displayed on the bottom of the screen. Characters are entered by the use of the arrow keys and then selected using the Enter Key [Ent]. 1. Move the Cursor to the desired character using the Arrow Keys and

select it by pressing the Enter Key [Ent]. 2. Numbers are selected directly by pressing the Number Keys on the

MultiCorr MKII Keyboard. 3. Note that you may select an open space in the Tag Number by placing

the cursor under the open space (after Z on the screen) and pressing [Ent]. An open space counts as 1 of the maximum 10 allowable characters.

4. To delete an erroneous entry press the Delete Key [Del]. To accept the completed Tag Number move the cursor to [accept] and press the Enter Key [Ent]. From this point on the entries depend on the type of probe being utilized. Section 7 of this manual provides details on how to enter the parameters for each type of probe. The same steps as shown above will be repeated.

---EDIT TAG NO-- PROBE = ER 12 { } ABCDEFGHIJKLMNO PQRSTUVWXYZ /( ) + &#$ * <accept> Figure 4


6.2.2 Probe Information Installation Using CorrTag Software CorrOcean has developed a PC software package called CorrTag which allows the MultiCorr MKII user to enter all of the Probe Numbers, Tag Numbers and Probe Parameters in a computer file and then download this information directly into the MultiCorr MKII Meter. When using CorrTag the user can create files containing the probe information for different locations. This allows the user to simply clear all of the existing probe information from the meter and download just the file containing information needed for the geographic area where probe readings will be taken. Some illustrative examples of how CorrTag may be used are as follows: 1. If a plant has more than 200 probes of a given type, simply divide the plant into areas of

less than 200 probes and create a separate file for each area. 2. If there are distinct geographical areas where probes are to be measured the user can create

a separate file of the probe parameters for each area. Before visiting a location the user can clear the meter, download the probe information and quickly proceed with taking measurements without having to reenter probe information. This also removes the possibility that readings could be mistakenly entered into a probe that is not located in that area.

Details on the use of CorrTag are provided in the CorrTag Data Sheets and user manual. The steps necessary to set up the MultiCorr MKII to receive CorrTag files are as follows: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [2] Go to Advanced Mode 3 [1] Go to Acquisition Set Up 4 [2] Load from PC 5 [Pass Code Number] Enter your personal passcode 6 [Ent] To Enter Pass Code and move to the next Menu The MultiCorr MKII is now set to receive any desired CorrTag file. The actual initiation on the data downloading is started from the PC software menu. If your MultiCorr MKII does not provide for a selection between "Manual" and "Using PC" then the internal electronics will need to be upgraded before you may use CorrTag Software. NOTE: If the MultiCorr MKII is not reset to eliminate all of the existing Probe Numbers and parameters the CorrTag files will override any existing Probe Numbers that are the same as in the downloaded file. Resetting the MultiCorr MKII is detailed in Section 11.3 6.3 Reading Setup The MultiCorr MKII allows the user to define both the number of samples taken with each reading and the engineering units for the measurement of ER and LPR Probes.


6.3.1 Number of Samples per Reading Normally a user would make a probe reading and obtain a display of the result for that reading. However in some cases, especially when the system to be measured is not stable, it may be advanta-geous to have a single reading represent the average of multiple samples. The MultiCorr MKII allows the user to establish the number of samples that can be averaged to obtain a single displayed reading. The actual raw data samples that make up the single reading may also be viewed by the operator so that the actual measured stability may be reviewed. The procedure for displaying raw data is discussed in Section 10.0, Displaying Measurement Data. The default value set in the MultiCorr MKII is 1 sample for each reading. The user can set the MultiCorr MKII to take up to 50 samples each time a measurement is made. Regardless of the number of samples which is defined only a single average result will be displayed. Setting the number of samples to a number above 1 will enhance the stability of the readings, but it will also increase the time required to perform a measurement. Increasing the number of samples per reading will also increase battery consumption and the total number of readings which may be obtained on a single charge will be reduced. Unless there is a specific reason to suspect a stability problem using the default value of 1 sample per reading is probably adequate. The additional sample readings are only made on the actual reading element step so increasing the number of samples, to say 3, does not require three times as much time as a single sample size. The user may want to test out some multiple sample sizes to optimize the stability of the readings and the time it takes to obtain measurement results. To set the number of samples follow the steps shown below: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [2] Go to Advanced Mode 3 [1] Go to Acquisition Set Up Menu 4 [3] Go to Reading Set Up Menu 5 [Pass Code Number] Enter your personal passcode 6 [Ent] To enter pass code and move to next menu 7 [1] Select No of Samples 8 Enter [1] through [50] Defines number of samples per reading 9 [Ent] Enters sample number and returns to Reading Set Up Menu 10 [Exit] Returns to Acquisition Set Up Menu


6.3.2 Selection of Engineering Units The MultiCorr MKII allows the user to set their preferred engineering units. There are two (2) types of units for each type of probe. To select the engineering units follow the steps shown below: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [2] Go to Advanced Mode 3 [1] Go to Acquisition Set Up Menu 4 [3] Go to Reading Set Up Menu 5 [Pass Code Number] Enter your personal passcode 6 [Ent] To enter pass code and move to next menu 7 [2] Go to Engineering Unit Menu 8 Enter [1] through [2] Defines the units for every Type of Probe based upon which entry

[1] through [2] is pressed. See the Engineering Units selection Chart below. 9 [Ent] Confirms entry and returns user to Read Set Up Menu 10 [Exit] Returns to Acquisition Set Up Menu Once a selection has been made for one type of probe, it establishes the units for all the Probe Functions. For instance, if you select Key [2] (Mils) for an ER probe then the LPR probes will read in mpy and the ER probes in mils/mpy. Listed below is a summary of the units that will be established when making an engineering units selection. The user may also change the engineering units after the data has been transferred to a Corrlist file. Engineering Unit Selection Chart Selection Option Function [1] [2] ------------------------------------------------ ER Probes mm, um, mm/y, um/y, (autoscaling) mils, mpy LPR Probes mm/y, um/y (autoscaling) mpy Galvanic Probes A, mA, ua (autoscaling) A, mA, ma (autoscaling) Analog Probes V, mV, uv (autoscaling) V, mV, uV (autoscaling) Polarization probes mV, mA mV, mA


7 DEFINING PROBE CHARACTERISTICS AND PARAMETERS 7.1 General The concept for the operation of the MultiCorr MKII is that the meter shall be capable of handling different Probe Types and different Probe Manufacturers. In order to accomplish this versatility, the user enters the probe parameters for each individual Probe. The MultiCorr MKII provides an easy and logical selection menu approach to assist the user in entering probe parameters. Probe parameters can be entered from either the Operator Mode or the Advanced Mode which were discussed in Section 5 of this manual. However, identification Tag Numbers can only be installed from the Advanced Mode so all of the examples will use the Advanced Mode menu. The probe parameters should be installed by the system or corrosion engineer. Tag information is protected by a pass code in the meter to avoid tampering or accidental changes by a field technician. A pass code number is supplied with the MultiCorr MKII at the time of delivery but it may be changed by the operator using the Advanced Mode and the existing Pass Code. Once a Tag Number has been defined for a Probe, the probe parametes are protected by the Pass Code. In MultiCorr MKII, raw data, such as resistance for ER Probes and current and voltage for LPR and galvanic Probes, is stored. Thus, when changing probe parameters, the displayed measurement values will change for all measurements for that Probe stored in the instrument. However, the raw data will remain unchanged. Additional Technical Information on each type of probe is provided in the Appendices of this manual. The Appendices also provide details on the formulas used to calculate displayed values and how corrosion rates are calculated.


7.2 Entering Electrical Resistance (ER) Probe Parameters To install ER Probe parameters and assign the Probe Tag Number follow the steps provided below: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [2] Go to Advanced Mode 3 [1] Go to Acquisition Set Up 4 [1] Go to Edit Probe 5 [Pass Code Number] Enter your personal passcode 6 [Ent] To enter Pass Code and move to the next Menu 7 [1] Go to Select Probe 8 [1] To select an ER probe 9 [Ent] To confirm the selection and move to next menu screen 10 Enter Any No. 0-199 The user can assign any number from 0 through 199 10b [Ent] To create if not created earlier 11 [1] through [4] See Explanation of Choices below [1] T10 Tubular ER Probe with a 10 mil element thickness [2] T20 Tubular ER Probe with a 20 mil element thickness [3] Wireloop Standard ER Wireloop. A standard ER wireloop is defined as a wireloop

probe where the measuring element is twice as long as the Reference Element. If your wireloop is a nonstandard design refer to APPENDIX B "ER Probe Technical Information"

[4] Special This can be used for specially designed ER Probes or tubular probes other than T10 and T20.

For installing and editing probe tag identification, please see section 6.2.1, step 12 and following instructions. NOTE: If you selected [1] T10 or [2] T20 no additional information is required and the MultiCorr MKII will skip steps 12 - 16. 12 Enter the Multiplier If you want to accept the default value provided for the Multiplier

proceed with Step 13. The Multiplier is identical to the element thickness. NOTE: See APPENDIX B "ER Probe Technical Information" for a detailed explanation of the Multiplier and a listing of common ER probes. Basically the multiplier is equal to: Element Thickness (Mils) times 25 OR Element Thickness (mm) times 1000 13 [Ent] This Accepts the Multiplier and moves the cursor to Conceal %


14 Enter % Conceal Some ER Probes do not have 100% of the measuring element

exposed to the corrosive environment. Most elements on ER Probes are fully exposed and have a conceal % of zero (0).

If you want to accept the default value for Conceal % proceed with Step 15 without entering a new conceal %.

15 [Ent] Accepts the Conceal % you assigned and displays the last window in this menu path

For installing and editing probe tag identification, please see section 6.2.1, step 12 and following instructions. 16 Press either [1] or [2] Press [1] if you want to set up additional probes Press [2] if you are finished. This will also return you to the Edit Probe Menu.


7.3 Entering Linear Polarization Resistance (LPR) Probe Parameters To install LPR Probe parameters and assign the Probe Tag Number follow the steps provided below: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [2] Go to Advanced Mode 3 [1] Go to Acquisition Set Up 4 [1] Go to Edit Probe 5 [Pass Code Number] Enter your personal passcode 6 [Ent] To enter Pass Code and move to the next Menu 7 [1] Go to Select Probe 8 [2] To select LPR Probes 9 [Ent] To confirm selection and move to next screen 10 Enter Any No. 0-199 The user can assign any number from 0 through 199 10b [Ent] To create if not created earlier 11 [1] through [3] See Explanation of Choices below [1] Standard This is a 3 electrode LPR probe with electrode area 300 mm2 and a B

Constant of 24 mV. The MultiCorr MKII will skip directly to step 16 if you make this selection.

[2] Special 3 el If your LPR Probe has another surface area/ B Constant and has 3 electrodes Press [2]

[3] Special 2 el If your LPR Probe has another surface area or has 2 electrodes Press [3] 12 Enter B Constant If you want to accept the default value provided for the B

Constant proceed with Step 12 NOTE: The B constant varies with each type of metal and environment. Values may be obtained from Tables or Tafel Curves. In the MultiCorr MKII a value of B=24mV has been used as the default value. This is a typical value for carbon steel in saline water. For additional information see APPENDIX C "LPR Probe Technical Information". 13 [Ent] Accepts the B Constant you assigned and moves the cursor to

Area of Electrodes 14 Enter Electrode Area Enter the surface area of the LPR Working Electrode. For

information about default values, please see section 11.3. For additional information on the area of some commonly used probes see APPENDIX C "LPR Probe Technical Information".

If you want to accept the default value for the Electrode area proceed with Step 15. 15 [Ent] Accepts the Electrode Area you assigned and displays the last

window in this menu path.


For installing and editing probe tag identification, please see section 6.2.1, step 12 and following instructions. 16 Press either [1] or [2] Press [1] if you want to set up additional probes Press [2] if you are finished. This will also return you to the Acquisition Set Up Menu. 7.4 Entering Galvanic Probe Parameters To install Galvanic Probe parameters and assign the Probe Tag Number follow the steps provided below: Step Key Description of Action ----------------------------------------------- 1 [On/Off] Turn on MultiCorr MKII 2 [2] Go to Advanced Mode 3 [1] Go to Acquisition Set Up 4 [1] Go to Edit Probe 5 [Pass Code Number] Enter your personal passcode 6 [Ent] To enter Pass Code and move to the next Menu 7 [1] To select Probe 8 [3] To select Galvanic Probes 9 [Ent] To confirm the selection of Galvanic Probe and to move to next

menu screen 10 Enter Any No. 0-199 The user can assign any number from 0 through 199 For installing and editing probe tag identification, please see section 6.2.1, step 12 and following

instructions. 11 Press either [1] or Press [1] if you want to set up additional probes [exit] Press [exit] if you are finished. This will also return you to the Acquisition

Set Up Menu. NOTE: Additional information on Galvanic Probes may be found in APPENDIX D "Galvanic Probe Technical Information".


7.5 Entering Analog Probe Parameters To install Analog Probe parameters and assign the Probe Tag Number follow the steps provided below: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [2] Go to Advanced Mode 3 [1] Go to Acquisition Set Up 4 [1] Go to Edit Probe 5 [Pass Code Number] Enter your personal password 6 [Ent] To enter Pass Code and move to the next Menu 7 [1] To select Probe 8 [4] To select Analog Probes 9 [Ent] To confirm the selection of analog probes and move to next menu

screen 10 Enter Any No. 0-199 The user can assign any number from 0 through 199 For installing and editing probe tag identification, please see section 6.2.1, step 12 and following instructions. 11 Press either [1] or Press [1] if you want to set up additional probes [Exit] Press [Exit] if you are finished. This will also return you to the Acquisition

Set Up Menu. NOTE: Additional information on Analog Probes, may be found in APPENDIX E "Analog Probe Technical Information".


7.6 Entering Polarization Parameters Polarization measurements may be taken with the Multicorr. The steps necessary to set up these probes is provided below: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on Multicorr 2 [2] Go to Advanced Mode 3 [1] Go to Acquisition Set Up 4 [1] To Edit Probe 5 [Pass Code Number] Enter your personal Pass Code 6 [Ent] To enter Pass Code and move to the next Menu 7 [1] To Select Probe 8 [5] To select Polarization Types 9 [Ent] Accept Polarization Types 10 Enter Probe No. The user can assign any number from 0 through 99 11 [Ent] Accepts Probe Number and moves you to Next menu 12 [1], [2] or [3] Press the number in front of the Polarization types depending on

which type of measurement will be made 13 [Ent] To accept and move to Next Menu Screen 14 [2] To Edit Tag Number 15 Enter Tag Number See Section 6.2.1, step 12 and following instructions 16 <accept> [Ent] Accepts Tag Number and moves you to Edit Probe menu 17 Press [1] or [Exit] Press [1] if you want to set up additional probes Press [Exit] if you are finished. Returns you to the Acquisition Setup Menu. 18 [5] To select Polarization Parameters 19 [1] To set the Cathodic Polarization Parameters 20 Enter Meas. Int. Enter the Interval (mV) between each Measurement 21 [Ent] Accepts your Entry and moves you to the Next Parameter 22 Enter Pol. Speed Enter the Polarization Speed (ì V/s) 23 [Ent] Accepts your Entry and moves you to the Next Parameter 24 Enter Imax Enter the maximum measurable current (0 - 48 mA) 25 [Ent] Accepts your Entry and moves you to the Next Parameter 26 Enter Umax Enter the maximum measurable voltage (0 - 1200 mV) 27 [Ent] Accepts your Entry and moves you to the Set Polarization

Parameter Menu 28 [2] To set Anodic Polarization Parameters Repeat the steps [20] to [27] 29 [3] To select the order of polarization 30 Press [1] or [2] Press the number in front of the Polarization Order the measurements will

be made 31 [Ent] To accept and move to Next Menu Screen 32 [Exit][Exit] To return to Main Menu (advanced mode) NOTE: The polarization parameters are set for the instrument and not stored individually for each probe. When you perform a measurement on a probe, the latest polarization parameters will apply. NOTE: A polarization scan can have a maximum of 100 data points. Please note that a slow polarization scan may require a large amount of battery capacity. NOTE: Additional information on Polarization measurements may be found in APPENDIX F "Polarization


Procedures"


8 PROBE MEASUREMENTS Before you proceed with any field measurements a Probe Number and the Probe Parameters must be assigned. It is generally recommended that the probe information be assigned using the Advanced Mode with the "Edit probe" Menu. Using this procedure allows you to assign a 10 character alphanumeric Tag Number that is very helpful in identifying the correct field probes. Probe Numbers and Probe Parameters can also be installed using the Operator Mode; however, identifying Tag Numbers can not be installed in this mode. This mode is normally used by field technicians to make readings on new probes. Tag Numbers are added at a separate time using the Advanced Mode. Taking a probe reading in either the Operator Mode or Advanced Mode is the same procedure. 8.1 Taking A Reading In The Operator Mode Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [1] Selects Operator Mode NOTE: If the Active Probe displayed on lines 7 & 8 at the bottom of the menu screen is the one you want to measure than there is no need to select a new probe and you may skip Steps 3 - 8. 3 [2] Select the Probe You Want To Measure 4 [1] through [5] Press the number in front of the Probe Type you are measuring 5 [Ent] To move to Next Menu Screen 6 Enter Any No. 0 - 99 To enter Probe Number to be measured 7 [Ent] Enters the number you assigned and displays Tag Number 8 [1] Pressing [1] starts the measurement sequence of the probe

defined on the window's bottom line. The details on the type on data received depends on the type of probe being interrogated and are provided in Section 9.0 of this manual.

For probes that are already defined with a tag number, the tag number will be displayed and the instrument will automatically use the assigned probe parameters. For probes that are not tagged, probe parameters can be defined but, the Tag Numbers cannot be installed in the Operator Mode. NB! In order to satisfy EX requirements, the MultiCorr housing is made from conductive materials. The housing is connected to instrument ground which is also the potential of the working electrode when making a mesurement. The instrument should therefore not be placed dierctly on an conducting surface when taking LPR, Galvanic, or polarization measurements.


8.2 Taking A Reading In The Advanced Mode Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [2] Selects Advanced Mode 3 [2] Selects Measure Menu From this point the measurement procedure is exactly the same as Steps 3 - 8 above.


9 PROBE MEASUREMENT READINGS AND DISPLAY INFORMATION 9.1 General Before reviewing this section you should have read and understood three (3) important procedures: Section 6.0 - Probe Identification and Meter Setup Section 7.0 - Defining Probe Characteristics and Parameters Section 8.0 - Probe Measurements This section provides details on the readings which are obtained when probes are monitored. Section 3.8 pertaining to the correct Probe Cable type and use should be reviewed before any measurements are taken. 9.2 Measurement Error Messages The MultiCorr MKII is a sophisticated electrical measuring device which not only takes electrical measurements but also checks the quality of those measurements. APPENDIX G "MultiCorr MKII Error Codes" provides a summary of the Error Codes that may be displayed if the MultiCorr MKII detects electrical measurements outside an acceptable range. Errors may be caused by a number of sources such as faulty cables, excessively corroded probes or a lack of conductive media surrounding an LPR probe. When Error Messages are displayed no readings are provided. 9.3 Selecting The Probe to Be Monitored This procedure assumes that you have properly assigned a Probe Number and inserted all probe parameters into the MultiCorr MKII. Before you take a measurement you must select the specific probe which you want to measure. Remember there are two (2) ways to select the probe you want to measure. 1. If the Active Probe is not the same type of probe that you want to measure, use the Select

Probe Menu previously described, to choose the desired Probe type and Number. 2. You may also use the arrow keys (up and down) to go between earlier defined probe numbers when you have selected the probe type.


- - - RAW DATA - - - Meas: x uohm Ref : x uohm Chk : x uohm Press ENT Key Figure 5

- - - - RESULT - - - - Rslt = xxx mil Digit = xxx Press ENT to store Figure 6

9.4 Raw Data and Final Reading The MultiCorr MKII presents the results both as Raw Data and a Final Reading. The Raw Data is for information only and is helpful in analyzing both the quality of the probe and stability of the system. The Final Reading is presented with an option for the user to decide whether or not to store the reading. The Analog and Galvanic Function are the only functions which does not display Raw Data prior to the Final Reading. This functions reads a direct analog or galvanic signal that is not utilized in any calculation so there is no necessity for raw results. The procedures for monitoring and storing data for each of the MultiCorr MKII Functions are outlined separately in this section. Remember that not all MultiCorr MKII units have all the available functions. 9.5 Monitoring Electrical Resistance (ER) Probes If the Active Probe is the ER Probe you want to measure use the following Steps: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [1] Go to Operator Mode 3 [1] Initiates measurement sequence and displays raw data IN PROGRESS This message is displayed on the screen as the measurement is being

performed. RAW DATA When the ER measurement is complete the Raw Data will be displayed as

shown in Figure 5, below. These values are for information only and are not stored in the MultiCorr MKII memory.

The three readings are the electrical resistance readings for the Measuring element, Reference

element and the Check element. 4 [ENT] See Figure 6, below for Final Reading display RESULT The Total Accumulated ER Probe Corrosion is obtained when you leave

the Raw data screen by [ENT]. The Digits Value is a calculated value more fully described in APPENDIX B - ER Probe Technical

Information. In general, this value will be approximately zero (0) for a new ER probe. A probe which is 50% corroded will have a digit value of approximately 1000.

5 [EXIT] or [ENT] Press [EXIT] if you do not want to store the reading Press [ENT] if you want to store the reading


Technical information on the displayed values is more fully described in APPENDIX B - ER Probe Technical Information


- - - RAW DATA - - - Vcat: - x.xxx mV Icat: - xxx uA Van: x.xxx mV Meas.: xx.x mV Ian: xxx uA Press ENT key Figure 7

- - - RESULT - - - Rslt: xxx.x mil/y Pit index = x.xx IcorC: xxxx mA IcorA: x.xxx mA Press ENT to Store Figure 8

9.6 Monitoring Linear Polarization Resistance (LPR) Probes If the Active Probe is the one you want to measure use the following Steps: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [1] Go to Operator Mode 3 [1] Initiates measurement sequence and displays raw data IN PROGRESS This message is displayed on the screen as the measurement is being

performed. RAW DATA When the LPR measurement is complete the Raw Data will be displayed

as shown in Figure 7, below. These values are for information only and are not stored in the MultiCorr MKII memory.

RESULT Press [ENT] to see the calculated result. The Pit Index is a ratio of the Anodic to the Cathodic Current Density and may be used to calculate

the Pitting Rate. The corrosion rate is calculated by use of the Stern-Geary equation. Please see appendix C for

further information. 4 [ENT] See Figure 8, below for Final Reading display 5 [EXIT] or [ENT] Press [EXIT] if you do not want to store the reading Press [ENT] if you want to store the reading Technical information on the displayed values is more fully described in APPENDIX C - LPR Probe Technical Information. NB! In order to satisfy EX requirements, the MultiCorr housing is made from conductive materials. The housing is connected to instrument ground which is also the potential of the working electrode when making a mesurement. The instrument should therefore not be placed dierctly on an conducting surface when taking LPR, Galvanic, or polarization measurements.


- - - RESULT - - - RSLT = xuA Press ENT to store Figure 9

9.7 Monitoring Galvanic Probes If the Active Probe is the Galvanic Probe you want to measure use the following Steps: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [1] Go to Operator Mode 3 [1] Initiates measurement sequence and displays raw data IN PROGRESS This message is displayed on the screen as the measurement is being

performed. RESULT When the Galvanic measurement is complete the Result will be displayed

as shown in figure 9, below. RAW DATA There is no raw data displayed for the Galvanic function, and the result screen will appear as shown in figure 9 below. 4 [ENT] See Figure 9, below for Result display 5 [EXIT] or [ENT] Press [EXIT] if you do not want to store the reading Press [ENT] if you want to store the reading Technical information on the displayed values is more fully described in APPENDIX D - Galvanic Probe Technical Information. NB! In order to satisfy EX requirements, the MultiCorr housing is made from conductive materials. The housing is connected to instrument ground which is also the potential of the working electrode when making a mesurement. The instrument should therefore not be placed dierctly on an conducting surface when taking LPR, Galvanic, or polarization measurements.


- - - RESULT - - - Rslt = x uV Press ENT to store

9.8 Monitoring Analog Probes, Reference Electrodes and CP Systems If the Active Probe is the Analog Probe you want to measure use the following Steps: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [1] Go to Operator Mode 3 [1] Initiates measurement sequence IN PROGRESS This message is displayed on the screen as the measurement is being

performed. RAW DATA There is no Raw Data displayed in the Analog Function and the display

screen will appear as shown in figure 10, below. RESULT The Voltage Reading on the Analog Probe is obtained directly. 4 [EXIT or [ENT] Press [EXIT] if you do not want to store the reading Press [ENT] if you want to store the reading More Technical information on Analog Probes is described in APPENDIX E - Analog Probe Technical Information.


9.9 Polarization Readings If the Active Probe is the Polarization Probe you want to measure use the following Steps: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on Multicorr 2 [1] Go to Operator Mode 3 [1] Starts the measurement sequence and displays raw data IN PROGRESS This message is displayed on the screen as the measurement is

being performed. In addition the potential and current of each measurement are displayed. NOTE: When the first part of the polarization (either anodic or cathodic) has been performed, a 5 minutes

measurement delay is automatically executed before continuing with the second part. 4 [Ent] or [Exit] Press [Enter] to store data or [Exit] to skip. If the MultiCorr is left without

any action at this point, the data will be automatically stored and the instrument switched off after 2 minutes.

When the polarization measurement is completed and the data stored, you are moved to the Measure Menu. From this menu a new probe can be selected and additional measurements can be made. To display the measured data and the results, refer to chapter 10. The potentials and currents measurements are shown on the screen as the scan is performed (Please see figure 11 below) As long as the "In Progress" Warning is being displayed the MultiCorr MKII is continuing to take measurements. You may halt the scan at any time by pressing [Exit]. 5 [EXIT] or [ENT] Press [EXIT] if you do not want to store the reading Press [ENT] if you want to store the reading If you do not press any button within 2 minutes after the polarization is completed, the polarization curve is automatically stored and the MultiCorr MK II is switched off.


IN PROGRESS.. U: xx mV I: xx mA Figure 11

As long as the "In Progress" Warning is being displayed the MultiCorr MKII is continuing to take measurements. You may halt the scan at any time by pressing [Exit]. Technical information for the polarization function is further described in APPENDIX F - Potentiostatic and Potentiodynamic Procedures. NB! In order to satisfy EX requirements, the MultiCorr housing is made from conductive materials. The housing is connected to instrument ground which is also the potential of the working electrode when making a mesurement. The instrument should therefore not be placed dierctly on an conducting surface when taking LPR, Galvanic, or polarization measurements.


10 DISPLAYING MEASUREMENT DATA The MultiCorr MKII allows the user to display a wide range of measurement results including Raw Data, Measurement Results and Corrosion Rates for ER Probes. 10.1 Selecting A Probe This procedure assumes that you have properly assigned a Probe Number, inserted any probe parameters into the MultiCorr MKII and that you have made and stored probe measurements. Before you can display measurement results you must select the specific probe for which you want to display data. Remember there are two (2) ways to select the probe you want to measure. 1. If the Active Probe is not the same type of probe that you want to measure, use the Select

Probe Menu previously described, to choose the desired Probe type and Number. 2. You may also use the arrow keys (up and down) to go between earlier defined probe numbers when you have selected the probe type. 10.2 Displaying Raw Data The user may display the raw data from the last reading made on the selected probe. The amount of raw data displayed depends on the number of samples selected (see Section 6.3.1). Raw data may be helpful in evaluating the stability of the measurements that were averaged to determine the actual Final Reading. Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [2] Selects Advanced Mode 3 [3] Selects Show Data 4 [2] Selects Display Raw Data NOTE: The MultiCorr MKII will display the raw data for as many samples as the meter is set to take for each stored reading. See Section 6.3.1 to set the number of samples that will make up one reading. 6 Use the arrow keys (up and down) to move to previous or subsequent readings 5 [Exit] Returns user to Show Data Window HINT: Press [ - ] to switch between display of Raw data and Result 10.3 Displaying Readings The user may display all of the stored readings for any probe. This procedure assumes you are familiar with selecting the probe for which you want to review the data. Step Key Description of Action ------------------------------------------------


1 [On/Off] Turn on MultiCorr MKII 2 [2] Selects Advanced Mode 3 [3] Selects Show Data 4 [3] Selects Display Results NOTE: If there are no stored readings the MultiCorr MKII will display "No Stored Readings" and you may continue with Step 5. If readings are stored, the result of the last measurement is displayed along with the reading date and time. The previous or subsequent readings for that Probe way be viewed by pressing the Up and Down [Arrow] Keys. HINT: Press [ - ] to switch between display of Raw data and Result 5 [Exit] Returns user to Show Data Window 10.4 Displaying ER Probe Corrosion Rate The user may display the Corrosion Rate for any ER Probe where more than one reading has been stored. This procedure assumes you are familiar with selecting the probe for which you want to review the data. Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [2] Selects Advanced Mode 3 [3] Selects Show Data 4 [4] Selects ER Rate NOTE: The ER Corrosion Rate will be shown if there are at least two (2) readings. The Corrosion Rate is based upon the last two (2) stored readings and converted to a yearly rate. The time period between the last two readings is also provided. If you are satisfied with using the last two ER readings to calculate the corrosion rate proceed to Step 7. If you want to vary the Corrosion Rate Time Period proceed with Step 4. 5 [2] Selects Corrosion Rate Calculation Period 6 [1] through [6] Enter Time period for calculation 7 [ENT] Accept selected time period and returns to previous menu screen 8 [ 3 ] Show rate NOTE: When a time period is selected for the rate calculation the MultiCorr MKII uses the oldest reading stored in the memory that is within the time period you selected. 9 [Exit] Returns user to Show Data Window


11 MultiCorr MKII SYSTEM FEATURES 11.1 Memory and Status The MultiCorr MKII has 3000 available "Buffers" into which readings and probe parameters may be stored. As readings are taken and stored, the number of available Buffers will decrease and a "MEMORY FULL " warning will appear when all the Buffers are full. The available memory can be readily checked by the operator using the Acquisition Setup window in the Advanced Mode. Each time the MultiCorr MKII displays the available memory it also shows the battery voltage and the current time and date. A version number of the MultiCorr MKII is also shown in the Status window which is helpful to know if additional Functions are added at a later date. To display the remaining Buffers and check the Battery Voltage use the following procedure: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [2] Go to Advanced Mode 3 [1] Go to Acquisition Set Up 4 [4] Select System 5 [Pass Code Number] Enter your personal passcode 6 [Ent] To enter pass code and move to next 7 [ 1 ] Status 8 [Exit] To return to system menu 11.2 Setting Date and Time The MultiCorr MKII includes an internal Clock that records the Date and Time with every reading. The Date and Time may be set by the user. Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [2] Go to Advanced Mode 3 [4] Go to System 4 [Pass Code Number] Enter your personal Pass Code 5 [Ent] To enter pass code and move to next menu. 6 [2] Displays Clock/Date Window


To Set the Time: 7 [1] Puts cursor below first numeric character in the Time Enter the Time using an HOURS-MINUTES-SECONDS Format: HH [Enter] MM [Enter] Seconds [Enter] NOTE: The MultiCorr uses a 24 Hour Internal Clock System. To Set the Date: 8 [2] Puts cursor below first numeric character in the Date Enter the date using YEAR - MONTH DAY format: YYYY [Enter] MM [Enter] DD [Enter] 11.3 System Reset and Default Settings The user can erase Every Entry using the System Reset option. When the system has been reset the available Buffers will be 3000 and all of the MultiCorr MKII Default Values will be reset. To just erase the readings use the Clear Memory described in Section 11.4. The MultiCorr MKII Default Values which will be present after the unit has been reset are: System Features Reading Sample Size 1 Data Transmission 9600 Baud Engineering Units Total Corrosion um Corrosion Rate um/y Current Measurements uA Voltage Measurements uV Electrical Resistance Probes (ER) T10 T20 Wireloop Special Multiplier 254 um 508 1000 250 Conceal % 0 0 0 0 Linear Polarization Probes (LPR) standard Special 3-electrode Special 2-elec-

trode BConstant 24 mV 24mV 24mV Electrode Area 300 mm2 500 500


Normally the user will not be resetting the unit since all the probe tag information would have to be reinstalled. However, when used in conjunction with the CorrTag Software the reset option is very useful. Once the MultiCorr MKII has been reset all the probe parameters from a single file can be quickly downloaded from a computer and the unit is ready to be used in the field. To reset the MultiCorr MKII: WARNING ! Every Reading, Probe Setting and Tag Number will be permanently erased if this

option is used. Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [2] Go to Advanced Mode 3 [4] Go to System 4 [5] Change Passcode 5 [Pass Code Number] Enter your personal Pass Code 6 [Ent] Enter Pass Code and move to next menu 7 [3] Select System Reset 8 [Ent] Confirm the reset (press Exit to continue without resetting the

unit). 11.4 Clearing The Memory The user may Clear Just The Readings using the Clear Memory option. Only the data readings will be cleared from the memory. All probe parameters, Tag Identifications and Engineering Units will be left unchanged. After the readings have been transferred to a computer file the user may want to clear the memory so that the available memory for future readings is increased. Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [2] Go to Advanced Mode 3 [4] Go to System 4 [Pass Code Number] Enter your personal Pass Code 5 [Ent] Enter Pass Code and move to next menu 6 [4] Clear Memory 7 [0] or [1] To confirm (press exit to continue without resetting the unit).


11.5 Changing The Pass Code The sensitive areas of the MultiCorr MKII Menus can be protected by a 4 digit numeric Pass Code to prevent inadvertent or unauthorized changes. Each MultiCorr MKII arrives from the factory with Pass Code set to 0000, which disables the Pass Code function and gives access to all menus. A personal Pass Code can be set by the following procedure: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [2] Go to Advanced Mode 3 [4] Go to System Set Up 4 [5] Select Change Pass Code 5 [Enter New Pass Code] The New Pass Code must be a 4 Digit Number between 0000 and

9999. 6 [Ent] This confirms the new Pass Code and returns you to the System

Menu NOTE: Make sure that the new Pass Code is recorded and kept in a safe location. If the Pass Code has been lost contact the nearest CorrOcean office. Please see the back of this manual for address and telephone/telefax.


12 TRANSMITTING READINGS TO A COMPUTER The MultiCorr MKII can transfer the readings stored in memory to any IBM or IBM Compatible computer. All data files within the MultiCorr MKII are in an ASCII format. Data may be transferred to a PC on battery power. To insure data integrity and quality, it is recommended that the batteries be fully charged prior to transferring data and that the battery charger is connected during data transfer. 12.1 Data Reception Software To transfer data the user must have a data reception software compatible with the MultiCorr MKII transmission format. CorrOcean has three (3) software programs which may be used to receive MultiCorr MKII data. CorrList Corrlist is designed to receive data, store data in files, edit data and allow the user to create ASCII

files that may be imported into other CorrOcean Software or other commercially available programs such as spreadsheets or wordprocessing. See the CorrList User Manual for additional information on the use of this program.

CorrTrend CorrTrend is a comprehensive Data Management program that provides historical files on

installations, automated graphical plots both in X-Y and bar chart formats, report generation, automated trend analysis, and weight loss coupon calculation and presentation. See the CorrTrend User Manual for additional information on the use of this program.

CorrChart CorrChart has all the capabilities of CorrList plus the added ability to store and chart polarization

readings. CorrChart allows the user to automatically plot Tafel Curves and determine a variety of slopes and constants associated with the Tafel Diagram. See the CorrChart User Manual for additional information on the use of this program.

12.2 Transmission Cable Connections The MultiCorr MKII comes with data transmission cables that are integrated with the battery charging system. The six (6) Pin male Fisher connector on the transmission cable should be inserted into the six (6) pin female COMM (Communications) Port located at the top end of the MultiCorr MKII. When inserting the Fisher connector into the MultiCorr MKII make sure that the white dot location markers on the connector and COMM Port are properly aligned and the connector is fully inserted. The 9 Pin Female RS-232 Connector should be connected to the PC Communication Port. On some computers it may be necessary to use an adapter to convert the 9 Pin connector to a 25 pin connector.


12.3 Specifying Data to be Transmitted The MultiCorr MKII allows the user to download MultiCorr MKII data from every Probe, or just a particular type of probe such as ER, LPR or Galvanic, and even a single designated probe. Readings which are transmitted are not removed from the memory. Once the readings have been transferred to a permanent file the user may use the Clear Memory or Reset Functions to remove the readings from the MultiCorr MKII memory. The transmission data format set in the MultiCorr MKII should match the receiving format specified in the CorrList software. Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [2] Go to Advanced Mode 3 [5] Select Transmit 4 [1] Select Specify Data 5 [1] through [4] Select Data Transmission Options [1] Limits Data to the specific probe type that is currently active.

Readings from every probe number of that type will be transferred. See Note below for limiting data to a specific probe.

[2] Transmits every probe reading in the MultiCorr MKII [3] Transmits a test pattern to insure that there is good communica tion

between the MultiCorr MKII and computer. [4] Limits data to the specific probe that is currently active. All readings for this probe will be transferred. 12.4 Setting the Transmission Speed Normally data can be transferred at the fastest speed allowed, which is 9600 Baud. The MultiCorr MKII does allow the user to specify a different transmission speed. The default value in the MultiCorr MKII is 9600 Baud and there is no necessity to even make that selection if it is the desired transmission speed. The default on the CorrList software is also 9600. If a slower baud rate is utilized the CorrList software must be set to the same speed. To set the MultiCorr MKII at a transmission speed other than 9600 use the following procedure. The first 5 steps are the same as above. Step Key Description of Action ------------------------------------------------ 4 [2] Display Baud Rate Selections 5 [1] through [6] Select desired baud rate ranging from 9600 down to 300 8 [Ent] Confirms selected rate and returns to Transmit Menu window


12.5 Starting Data Transmission Once the type of data to be transmitted has been selected along with the baud rate the data transfer may be initiated. It is recommended that the first time data is transmitted, and any time that there are transmission problems, that the MultiCorr MKII Test Pattern is utilized. Remember, it is recommended that the MultiCorr MKII be at a maximum charge prior to transmitting data. If the transmission is not successful the data is still in the memory and the unit can be charged prior to making a second attempt. To transmit readings follow the first five (5) steps outlined in Section 12.3, above. This transmission procedure starts with step 6 since there is normally no reason to reset the Baud Rate. Step Key Description of Action ------------------------------------------------ 6 [3] Starts data transmission 7 [Exit] Returns user to Main Advanced Mode Menu 12.6 Data Transmission Troubleshooting Data transmission is relatively simple and once the user is familiar with the proper selections problems should rarely occur. Should data transmission problems arise a few simple checks should resolve most problems. 1. Make sure all cables are securely fastened in the correct ports. The ports on the rear of the

computer must be correctly identified and the same port identification must be selected in the reception software. Improper selection of the computer port is the primary reason for a lack of data transfer. Use the Test Pattern to check the cable connection quality.

2. Carefully examine cables, connections and pins to insure there is no damage. 3. Check the settings on the reception software to insure these match the settings on the

MultiCorr MKII. Set the software to receive "YES". 4. Make sure the batteries on the MultiCorr MKII are charged sufficiently. An overnight

charge is sufficient if the batteries are low.


13 AUTOMATIC READINGS 13.1 General The MultiCorr MKII may be configured with an optional Function that allows the operator to take readings automatically at preprogrammed time intervals ranging from 10 Minutes to 1 Reading Per Day. The readings are automatically stored for later transfer to a PC or viewing on the MultiCorr MKII. The Automatic Function can be added to any existing MultiCorr MKII unit. WARNING ! Always fully charge the batteries prior to using the Automatic Function, even if

the unit is to be operated while connected to the battery charger and an electrical source. Never operate the MultiCorr MKII in a High Hazard Area while it is connected to the Battery

Charger/Electrical Outlet. If your MultiCorr MKII has the Automatic Reading Function installed it can be readily accessed: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [2] Go to Advanced Mode 3 [6] Selects the Automatic Function Menu The description and use of each of the possible Automatic Menu Selections are explained below. 13.2 Selecting Reading Intervals Once the Automatic Menu has been displayed the operator may select the interval between each reading. Follow the first three (3) steps in 13.1, above. Step Key Description of Action ------------------------------------------------ 4 [1] Displays the Select Interval Window 5 [1] through [6] Select the desired Reading Interval 6 [Ent] Confirms interval period and returns the user to the Main

Automatic Menu Window


13.3 Selecting A Probe For Automatic Readings All of the readings will be stored in the Active Probe. The user may change the Active Probe while still in the Automatic Main Menu. Selecting a new Probe Type or Number while the user is still in the Automatic Menu Window will not effect or delete the reading interval previously selected. The selection of a new probe has been previously outlined in prior sections of this manual. The procedure for changing the Active Probe is performed using the same window selections. 13.4 Starting Automatic Readings When the probe where the readings are to be stored has been selected along with the reading interval, the automatic reading sequence can be Enabled (Started) by Pressing the [3] Key (Enable Automatic) in the Automatic Menu Window. It is recommended that prior to enabling the automatic reading sequence that the user view the Select Interval Window to insure that an asterisk "*" appears in front of the desired reading interval. You may then Exit and Enable the MultiCorr MKII. As soon as the Automatic Reading Function is enabled, the MultiCorr MKII will take a reading, store the results and turn off the MultiCorr MKII. WARNING! If the MultiCorr MKII does not immediately take a reading and automatically turn

off it means that the Automatic Reading Function has not been properly set. 13.5 Stopping Automatic Readings The Automatic Reading sequence may be easily disabled at any time. Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII. The "AUTO-ON" Warning will be dis-

played at the top of the screen 2 [2] Go to Advanced Mode 3 [Ent] or [Exit] Press [Ent] to disable the automatic function press [Exit] to quit

and leave the automatic function going A warning appears on the screen. WARNING! The MultiCorr MKII will disable the automatic function if the available battery

level drops to a preset factory level. This feature is to insure that stored data are retained in the memory. If this occurs recharge the batteries as soon as possible.


13.6 Automatic Reading Technical Information There are special features designed into the MultiCorr MKII to insure the quality of the data and versatility of the meter. It is important for the user to be aware of how these features affect the MultiCorr MKII when it is in the Automatic Mode. Battery Power and Storage Capacity 1. The Type of Probe being monitored effects the battery consumption. For instance an LPR

reading will use more power than an ER Probe reading. 2. The available battery storage capacity will generally be the limiting factor in determining

the number of readings that may be taken rather than the available memory. 3. NiCd Batteries discharge even when not in use so there is a slight power consumption

between readings. Therefore, more readings are possible when the selected interval is short when compared to longer intervals, even for the same probe type.

4. Although the MultiCorr MKII will discontinue automatic readings when the battery level

reaches the minimum allowable level, the NiCd batteries will continue to slowly discharge. For this reason the MultiCorr MKII should never be allowed to sit in the field or be stored with data in the memory when the batteries are low.

Using The MultiCorr MKII Between Automatic Readings 1. The MultiCorr MKII may be used to take extra readings between automatic probe

measurements on the Active Probe while the meter is in the automatic mode. 2. If the MultiCorr MKII is used to take measurements on a different probe after the

automatic reading sequence has started, the user must reset the unit to the correct probe, select the timed intervals and enable the automatic function.


*TERMINAL* 1: SAND TERMINAL 2: ML TERMINAL Figure 12

14 TERMINAL MODE Two different terminal functions can be installed in the MultiCorr MKII. Use the following keystrokes to enter the Terminal mode(s). Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode If both available terminal modes are installed, you will enter the submenu shown in figure 12. If only one of the terminal modes are installed, you will enter the main menu of this terminal mode directly. The menu shown in figure 12 will then be skipped. 14.1 Global settings for MultiCorr MKII Global settings for the MultiCorr MKII are set in the advanced mode. Such settings are - Time and date for the MultiCorr MKII - Passcode to enter protected areas of the menus - Reset of the MultiCorr MKII - Baudrate for data transfer It is referred to section 11 for MultiCorr MKII system features.


*MLOG TERMINAL* 1: Logger Mngr 2: Transfer Data Figure 13

15 TERMINAL MODE - MULTILOG 15.1 MultiLog Terminal Main Menu Use the following keystrokes to enter the MultiLog Terminal main menu: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode (2a [2] Go to ML Terminal) The MultiLog Terminal main menu is displayed in figure 13. The menu allows the user to select between two different options: Logger Mngr This choice gives access to the MultiLog 'set-up' section. Transfer Data Takes care of data transfer from the MultiLog stations and to a PC. In

"Transfer Data" the user can also view the data stored in the Terminal and check the Terminal and Station status.


Multi. 1.13 ML 1: Measure 2: Show Log Data 3: Logger Setup 4: Logger status Figure 14

15.2 Logger Manager In this menu the setup of a MultiLog station is specified. To execute the functions in this menu, connect the cable between the MultiCorr MKII and the MultiLog station. Make sure that the MultiCorr MKII is switched off before it is connected to the MultiLog. The user can, in this menu, specify measurement parameters and intervals, set the MultiLog internal clock, system reset and clear the MultiLog memory. The definition of each function is described below. Use the following key stroke procedure to get into the MultiLog Manager Menu: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode (2a [2] Go to ML Terminal) 3 [1] Go to MultiLog Manager Menu The display will show <-Busy -> until communication with the MultiLog station is initialized. NOTE: If the message "Rec.Timeout" appears then press Exit and then [1] again until the screen

as shown below appears. If the error message continues check the cable connection.


*** MEASURE *** 1: Manual 2: Automatic Figure 15

15.2.1 Measure In this menu the user can specify the measurement procedure in the MultiLog station, such as manual or automatic measurements. Use the following key stroke procedure to access the Measure Menu: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode (2a [2] Go to ML Terminal) 3 [1] Go to MultiLog Manager Menu 4 [1] Enter the Measure Menu Manual: When specifying 'Manual' one measurement will be carried out instantaneously on all probes connected to the MultiLog Station. Step Key Description of Action ------------------------------------------------ 5 [1] Start Manual measurement


- MEAS. SETUP - 1: Enable Auto 2: Disable Auto - DISABLED - Start = -unavail- Interval= 00:00

Automatic: Normally the MultiLog Station will be used for continuous monitoring with a defined interval between each measurement. In the 'Automatic' Menu (figure 16) these parameters can be specified. Step Key Description of Action ------------------------------------------------ 5 [2] Enter the Automatic Menu Line 6-8 will display - ENABLED - and give interval if automatic measurements are enabled. The start time is not retrieved from the logger and will only be displayed each time the start time is defined and sent to logger. Use the following keystrokes to enable auto and set start time and interval: Step Key Description of Action ------------------------------------------------ 6 [1] Enter the Enable Auto mode 7 [HH][ent][MM][ent] Give start time, format: Hours, Minutes 8 [HH][ent][MM][ent] Give logging interval, format : Hours, Minutes. Maximum

logging interval is 24 hours. Hint: Check clock of MultiLog before automatic readings are started, and set time if required. The MultiLog station should be initialized prior to first start up of measurements. However, it is not necessary to do this later if probe setup etc. not is changed. It is also a good idea to start logging a few minutes later than present time, so you have time to do

other operations before the MultiLog becomes busy with measurements. If LPR readings are performed, minimum logging interval recommended is 5 minutes. This is because LPR readings in electrolytes with low conductivity may take a couple of minutes, and the logger will be busy most of the time if too short logging interval is given.


- - - RAW DATA - - - 1: ER 2: LPR-2 3: LPR-3 4: Galvanic 5: Analog 6: Pol. types

15.2.2 Show Log Data In the 'Show Log Data' Menu (figure 17) the user can look at the measured data stored in the MultiLog for each probe connected to the station (i.e. data are not transferred to the MultiCorr MKII, only displayed on the screen). To enter the desired data use the following key stroke procedure: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode (2a [2] Go to ML Terminal) 3 [1] Go to MultiLog Manager Menu 4 [2] Enter Show Log Data Menu 5 [digit] Select probe type 6 [digit] Select probe no. 7 [Ent] If the terminal cable is not connected the message 'Receive timeout, 'No Readings !!' will appear on the display. This may also occur if the station battery is low. If you get this message, press any key and try again. The arrow keys are used to scroll up and down the data list.


- - - ER PROBE - - - Pr: 1 Meas: 1 Meas : xx.xx mohm Ref : xx.xx mohm Pos : xxx - xxx Logg : x El : 1 Date : YY/MM/DD Time : hh: mm: ss

The data set shown for each type of probe measurement is: -for ER-probes: * Probe no and Measurement no. (sequential no. of the measurement in the MultiLog

memory). * Resistance value of measurement element. * Resistance value of reference element. * "Pos" value which represents positive and negative battery voltage in percentage of lowest

acceptable level. * Logger number and element no. (always 1 for standard ER probes). * Date given as Year/Month/Day. * Time given as Hour/Minute/Second - for LPR 2/3 electrode probe: * Probe no and Measurement no. (sequential no. of the measurement in the MultiLog

memory). * Current value of measurement element. * Potential value of reference element.] * "Pos" value which represents positive and negative battery voltage in percentage of lowest

acceptable level. * Logger number and element no. (cathodic polarization will be "element" 1, anodic

polarization will be "element" 2). * Date given as Year/Month/Day. * Time given as Hour/Minute/Second


- for Galvanic probe: * Probe no and Measurement no. (sequential no. of the measurement in the MultiLog

memory). * Current measurement * "Pos" value which represents positive and negative battery voltage in percentage of lowest

acceptable level. * Logger number and element no. (always 1 for galvanic probes). * Date given as Year/Month/Day. * Time given as Hour/Minute/Second - for Analog probe: * Probe no and Measurement no. (sequential no. of the measurement in the MultiLog

memory). * Potential measurement * "Pos" value which represents positive and negative battery voltage in percentage of lowest

acceptable level. * Logger number and element no. (always 1 for analog probes). * Date given as Year/Month/Day. * Time given as Hour/Minute/Second - for Polarization probe: * Probe no and Measurement no. (sequential no. of the measurement in the MultiLog

memory). * Current measurement * Potential measurement * "Pos" value which represents positive and negative battery voltage in percentage of lowest

acceptable level. * Logger number and element no. (each data point in each polarization scan will be given

sequential "element" numbers). * Date given as Year/Month/Day. * Time given as Hour/Minute/Second


*** ML SETUP *** 1: Set Clock 2: Logger Reset 3: Status 4: Clear Memory 5: FB setup 6: Logger Setup

15.2.3 Logger Setup This function is used to set up the MultiLog parameters. It is used to specify the internal MultiLog clock, and station and probe number. The MultiLog data memory can be cleared after transmission of data and the MultiLog can be reset. The MultiLog status can also be read. The key stroke procedure is described below: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode (2a [2] Go to ML Terminal) 3 [1] Go to MultiLog Manager Menu 4 [3] Enter the MultiLog Setup Menu 5 [Passcode] Enter the system Passcode


Set Clock This function enables the user to set the Station's real time clock. Step Key Description of Action ------------------------------------------------ 6 [1] Select Set Clock function The clock time of the MultiCorr MKII (Term) and logger are now shown on the screen (both date and time). To set the time in the MultiLog to the same as the terminal. Step Key Description of Action ------------------------------------------------ 7 [1] Select Set Time Hint: It is recommended to synchronise the clock of the MultiCorr MKII and the MultiLog

Station with the platform/plant time (process log). For setting of the MultiCorr MKII internal clock, it is referred to section 11.2. Logger Reset This function enables the user to reset the MultiLog station. Warning: This function clears the System Setup parameters and data stored in the

MultiLog station. To enter this function, use the key stroke procedure: Step Key Description of Action ------------------------------------------------ 6 [2] Select Logger reset 7 [Ent] Press enter to confirm Press any other key to interrupt the procedure


- - ML STATUS - - +12 : 10.2 V -12 : 10.6 V TMP 16.4 C Free mem : 2190 Log.int: hh:mm Date : YY/MM/DD Time : hh:mm:ss

Logger Status This function enables the user to read the system 'Status' of the MultiLog Station. In the displayed menu the user obtains information about the battery voltage, the MultiLog station internal temperature, the amount of free memory and the logging intervals if automatic measurements are enabled, and data and time. The "+12V" is the positive battery voltage with a nominal voltage of around +12V. The "-12V" is the negative battery voltage with nominal voltage of around -12V. If the voltages are less than +/- 9.4 V, the batteries should be replaced as soon as possible (or charged if NiCd batteries are used) . The "TMP" is the internal temperature in the MultiLog housing. This value is not recorded but should be monitored to ensure that the internal temperature does not exceed 70 deg C. The "Free Buffer" indicates the free memory in the Station, i. e. the number of measurements that can still be taken. 0 indicates memory full, 2000 indicates empty. The "Log.int." denotes the measurement interval specified for automatic measurements (hh:mm). To access this function, use the following key strokes: Step Key Description of Action ------------------------------------------------ 6 [3] Select Status Menu 7 [Exit] Return to System Setup Menu


- - ML SETUP - - 1: Probe setup 2: Pol. Setup Figure 21 MultiLog Setup

Menu

Clear Memory This function enables the user to 'Clear' the internal Memory of the MultiLog station. The function leaves the pre-programmed settings like current and the measurement intervals unchanged. Warning: This function clears the stored data in the MultiLog station. To enter this function, use the key stroke procedure: Step Key Description of Action ------------------------------------------------ 6 [4] Select Clear memory 7 [Ent] Press enter to confirm Press any other key to interrupt the procedure Hint: When data has been transferred from the logger to the MultiCorr MKII, this function will

normally be performed. FB Setup This menu is applicable only if used with the Field Bus version of the MultiLog system. This is not further described in this manual. Logger Setup This function defines the identification number of the MultiLog station and the number of probes connected to it. This information is stored with each set of measurement data for identification of the data. Key stroke is: Step Key Description of Action ------------------------------------------------ 6 [6] Enter MultiLog Setup Menu


- - - ML INIT - - - ML address : 1 No. ER-pr. : 1 No. LPR 3-el : 0 No. Galv. Pr. : 0 No. An. Pr. : 0 Cat/An.pol. : 0 Figure 22 MultiLog

Probe Setup For setup of ML address, number of ER, LPR 2-el, LPR 3-el, Galvanic, Analog probes and Polarization probes, use the following keystrokes: Step Key Description of Action ------------------------------------------------ 7 [1] Enter MultiLog Initialization menu 8 [Digit/Ent] Enter MultiLog address 9 [Digit/Ent] Enter number of ER-probes 10 [Digit/Ent] Enter number of LPR 2-electrode probes 11 [Digit/Ent] Enter number of LPR 3-electrode probes 12 [Digit/Ent] Enter number of Galvanic probes 13 [Digit/Ent] Enter number of Analog probes 14 [Digit/Ent] Enter number of Polarization probes. 15 [Ent] Sends data to MultiLog If a polarization probe is chosen, polarization parameters then has to be selected as described below (keystroke 16-20) .


Pol setup For definition of polarization parameters, use the following keystrokes: Step Key Description of Action ------------------------------------------------ 16 [Digit/Ent] Enter Cathodic Potential [mV] 17 [Digit/Ent] Enter Anodic Potential [mV] 18 [Digit/Ent] Enter Cathodic sweep speed [ì V/s] 19 [Digit/Ent] Enter Anodic sweep speed [ì V/s] 20 [Digit/Ent] Enter Polarization step [mV] The measurements can then be started as described in section 15.2.1. Hint: When giving measuring interval, please consider the time used for each polarization scan. 15.2.4 Logger Status See description of Logger Status under section 15.2.3. This function should be used at regular intervals to check the battery voltage, internal temperature and available memory in the MultiLog Station.


*** TRANSMIT *** 1: Trans. to PC 2: Rec. from log 3: Show Trm.Data 4: Term. Status 5: Logger Status 6: Clear Term

15.3 Transfer Data The Transfer Data Menu contains functions for data communication between the Terminal and the MultiLog station, and between the Terminal and the user's Personal Computer (PC). The transmission speed of data is specified in the MultiCorr MKII advanced mode, please see section 12.4. Normally the user can use the default value 9600 Baud, but when necessary other values can be chosen to suit the PC serial port set up. For data transmission to a PC, the function 'Transmit to PC' is specified. When the user wants to retrieve data from a MultiLog station, the function 'Receive from MultiLog' is the correct choice. In the 'Transfer Data' Menu there are also functions for showing data received from the Station, the status of the terminal and the status of the MultiLog station. To check the data stored in the MultiLog Station use the 'Show Log Data' function via the ML Manager menu (section 15.2.2). It is recommended that the MultiCorr MKII battery is fully charged prior to transmitting data. If the transmission is not successful, the data is still held in the MultiLog memory and the unit can be recharged prior to making a second attempt. To gain access to the 'Transfer Data' Menu the following key strokes are used: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode (2a [2] Go to ML Terminal) 3 [2] Go to Transfer Data Menu


15.3.1 Transfer to PC For the transmission of the collected data from the MultiLog station to a Personal Computer (PC) the function 'Transfer to PC' is used. Before executing this function the communication cable branch must be connected through the RS-232 serial port of the PC. The PC should also be loaded with the MultiCom software and set up to receive the corresponding station/probe information. Please see the MultiCom user manual for details (doc. no. 93-3-340). Switch on the MultiCorr MKII prior to starting the PC program to avoid possible noise caused by the instrument switching on. When the 'Transfer to PC' function is selected, the data will be transferred from the Terminal memory to the MultiCom program. For executing this function, use the following key strokes: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode (2a [2] Go to ML Terminal) 3 [2] Go to Transfer Data Menu 4 [1] Start data transmittal to the PC Please consider the following precautions to prevent any interruption in the data transmission: 1. Switch the MultiCorr MKII on prior to starting the receive data function in MultiCom. 2. Make sure the cable is securely fastened to the correct serial port. The serial ports of the

computer must be correctly identified and the same port identification must be selected in the MultiCom software (eg COM 1).

3. Carefully examine cables, connections and pins to ensure there is no damage. 4. Make sure the batteries of the MultiCorr MKII are fully charged. An overnight charge is sufficient if the batteries are low. After a successful transmission of data to the PC, the operator would normally select the 'Clear Terminal Memory' function (see section 15.3.6).


15.3.2 Receive data from MultiLog After a successful setup of the MultiLog station(s), the probe measurements are automatically executed at the defined interval(s). When the user wants to retrieve the measured data, the 'Receive from Log' function is used. This function makes it possible to download data from the MultiLog memory directly to the MultiCorr MKII memory. Before executing this function the flexible instrument cable must be connected to the MultiLog station with the MultiCorr MKII switched off. To execute this function, use the following key strokes: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode (2a [2] Go to ML Terminal) 3 [2] Go to Transfer Data Menu 4 [2] Start data retrieval from the MultiLog To prevent any interruption in the data transmission, make the same security checks as for Transfer to PC (section 15.3.1). When data are retrieved form the MultiLog by this procedure, the data is not automatically removed from the MultiLog memory. After a successful data transfer, it is recommended to check the data in the MultiCorr MKII memory and then remove them from the MultiLog memory (to release memory for storage of new measurements). For instructions for this operation please see "Clear memory" in section 15.2.3.


*** SHOW DATA *** 1: Select Probe 2: Dsp. Term Data Probe= ER 1 Logg_01_1

15.3.3 Show Terminal Data In the 'Show terminal data' Menu of the MultiCorr MKII the user can view the measured data for each probe that has been transferred from the MultiLog station. To enter the menu, use the following key stroke procedure: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode (2a [2] Go to ML Terminal) 3 [2] Go to Transfer Data Menu 4 [3] Enter the Show Data submenu The last two lines on the screen identifies the selected probe. In the above example, "Logg_01-1" is the "tag number" referred to in section 4.5. This "tag number" is used internally in the Terminal memory only, and is automatically generated. It is not transmitted to the computer when data are downloaded from MultiCorr MKII. The above "tag number" indicates that MultiLog 01, probe 1 is selected. As given on the above line, this is an ER probe.


- - - RAW DATA - - - Meas no 1 Meas : xx.xx mohm Ref : xx.xx mohm Pos : xxx - xxx Logg : x El : 1 Date : YY/MM/DD Time : hh: mm: ss

Select Probe Data to be shown is selected by the following key strokes: Step Key Description of Action ------------------------------------------------ 5 [1] Enter select probe mode 6 [digit][Ent] Select probe type 7 [digit][Ent] Enter logger no. 8 [digit][Ent] Enter probe no. Data is then displayed by the following key strokes: Step Key Description of Action ------------------------------------------------ 9 [2] Display data The data shown is in the same format as described in section 15.2.2, except line 2 of the screen where measurement no. is given instead of probe no. Arrow keys can be used to scroll data. The newest measurement is shown as default. Example of data displayed is given in figure 25.


*** STATUS *** SW ver. 2.00pre Free mem: 2996 Pos Batt: 6.98V Neg Batt: -7.42V Date: 96/01/26 Time: 08:54:18

15.3.4 Terminal Status In the 'Terminal Status' display the user can read the amount of used memory, available memory, and the time and date set in the MultiCorr MKII. This function should be selected after each receipt of data, to check that all the data has been successfully transmitted from the MultiLog Station. Total memory capacity in the MultiCorr MKII is 3000 measurements (buffer). ER, Galvanic, analog readings, will use one buffer each, while LPR readings will use two buffers (one for cathodic and one for anodic readings). Polarization scans will use one buffer per stored data point. Please note that some of the memory may be occupied by MultiCorr readings or SandLog readings. If you need full memory capacity you may have to transfer these data to a PC for storage before you clear the memory in the different modes. "Rem. buffer" indicates the amount of free memory. The window also displays the date and time set in the Terminal along with the instrument software version. Key strokes for executing the function are: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode (2a [2] Go to ML Terminal) 3 [2] Go to Transfer Data Menu 4 [4] Go to Terminal Status Window 5 [Exit] Go back to Transfer data menu


15.3.5 Logger Status See description of Logger Status under section 15.2.3. This function should be used at regular intervals to check the battery voltage, internal temperature and available memory in the MultiLog Station. 15.3.6 Clear Terminal Memory This function enables the user to clear the MultiCorr MKII memory for MultiLog data stored by the MultiLog Terminal Mode. The function should not be used before data is transmitted to the PC unless it is used to clear undesired data. The function should be used to clear data from the MultiCorr MKII memory say after transmission of data to the PC. Warning: This function clears all MultiLog data stored in the MultiCorr MKII

memory. Other data types (Ordinary MultiCorr readin gs or SandLog data) are, however, not affected.

Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode (2a [2] Go to ML Terminal) 3 [2] Go to Transfer Data Menu 4 [6] Go to Clear Memory Window 5 [Ent] Press enter to confirm Press any other key to interrupt the procedure.


*SAND TERMINAL* 1: Logger Mngr 2: Transfer Data Figure 27 SandLog Terminal Main Menu

16 TERMINAL MODE - SANDLOG 16.1 SandLog Terminal Main Menu Use the following keystrokes to enter the SandLog Terminal main menu: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode (2a [1] Go to SandLog Terminal) The SandLog Terminal main menu is displayed in figure 27. The menu allows the user to select between two different options: Logger Mngr This choice gives access to the SandLog 'set-up' section. Transfer Data Takes care of data transfer from the SandLog to a PC. In "Transfer Data"

the user can also view the data stored in the terminal and check the terminal and SandLog status.


2.01-001-NOCAL- 1: Measure 2: Show Log Data 3: Logger Setup 4: Logger status Figure 28 Logger Manager Menu

16.2 Logger Manager In this menu (figure 28) the setup of a SandLog is specified. To execute the functions in this menu, connect the cable between the MultiCorr MKII and the SandLog. Make sure that the MultiCorr MKII is switched off before it is connected to the SandLog. The user can, in this menu, specify measurement parameters and intervals, set the SandLog internal clock, system reset and clear the SandLog memory. The definition of each function is described below. Use the following key stroke procedure to get into the SandLog Manager Menu: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode (2a [1] Go to SandLog Terminal) 3 [1] Go to Logger Manager Menu The display will show <-Busy -> until communication with the SandLog is initialized. NOTE: If the message "Rec.Timeout" appears then press Exit and then [1] again until the screen

as shown below appears. If the error message continues check the cable connection.


*** MEASURE *** 1: Manual 2: Automatic Figure 29 Measure Menu

16.2.1 Measure In this menu (figure 29) the user can specify the measurement procedure in the SandLog, such as manual or automatic measurements. Use the following key stroke procedure to access the Measure Menu: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode (2a [1] Go to SandLog Terminal) 3 [1] Go to SandLog Manager Menu 4 [1] Enter the Measure Menu Manual: When specifying 'Manual' one measurement will be carried out instantaneously on all probes connected to the SandLog. Step Key Description of Action ------------------------------------------------ 5 [1] Start one measurement


- MEAS. SETUP - 1: Enable Auto 2: Disable Auto - DISABLED - Start = -unavail- Interval= 00:00

Automatic: Normally the SandLog will be used for continuous monitoring with a defined interval between each measurement. In the 'Automatic' Menu (figure 30) these parameters can be specified. Step Key Description of Action ------------------------------------------------ 5 [2] Enter the Automatic Menu Line 6-8 will display - ENABLED - and give interval if automatic measurements are enabled. The start time is not retrieved from the logger and will only be displayed each time the start time is defined and sent to the logger. Use the following keystrokes to initiate automatic measurements: Step Key Description of Action ------------------------------------------------ 6 [1] Enter the Enable Auto mode 7 [HH][ent][MM][ent] Give start time, format: Hours, Minutes 8 [HH][ent][MM][ent] Give logging interval, format : Hours, Minutes. Maximum

logging interval is 24 hours. Hint: Check the clock of SandLog before automatic readings are started, and set time ifrequired.

The logger should be initialized prior to first start up of measurements. However, it is not necessary to do this later if probe setup etc. not is changed. It is also a good idea to start logging a few minutes into the future, so you have time to do other

operations before the SandLog becomes busy with measurements.


Sand-probe no:

16.2.2 Show Log Data In the 'Show Log Data' Menu (figure 31) the user can look at the measured data stored in the SandLog for each of the two sand probes connected (i.e. data is not transferred to the MultiCorr MKII, only displayed on the screen). To enter the desired data use the following key stroke procedure: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode (2a [1] Go to SandLog Terminal) 3 [1] Go to SandLog Manager Menu 4 [2] Enter Show Log Data Menu 5 [1 or 2] Select probe no. 1 or 2 6 [Ent] If the MultiCorr MKII cable is not connected the message 'Receive timeout, 'No Readings !!' will appear on the display. This may also occur if SandLog's battery levels are low. If you get this message, press any key and try again. The arrow keys are used to scroll up and down the data list.


- - - SND PROBE - - - Pr: 1 Meas: 1 Meas : x.xxx mohm Ref : x.xxx mohm Pos : xxx - xxx Logg : 5 El : 1 Date : YY/MM/DD Time : hh: mm: ss

The data set shown for sand probes is: * Probe no. and Measurement no. (sequential no. of the measurement in the SandLog

memory). * Resistance value of sand probe element. * Resistance value of reference element. * "Pos" value which represents positive and negative battery voltages in percentage of

lowest acceptable level. * Logger address and element no. (1 to 4 for 4-element sand probes). * Date of measurement given as Year/Month/Day. * Time of measurement given as Hour/Minute/Second As an example, figure 32 shows measurement no. 1 on sand probe no. 1, element no. 1, for a SandLog with address no. 5.


*** SAND SETUP *** 1: Set Clock 2: Logger Reset 3: Status 4: Clear Memory 5: FB setup 6: Logger Setup

16.2.3 Logger Setup This function (figure 33) is used to set up the SandLog parameters. It is used to specify the internal SandLog clock, and the SandLog address and no. of sand probes connected. The SandLog data memory can be cleared after transmission of data and the SandLog can be reset. The SandLog status can also be read. The key stroke procedure is described below: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode (2a [1] Go to SandLog Terminal) 3 [1] Go to SandLog Manager Menu 4 [3] Enter the SandLog Setup Menu


Set Clock This function enables the user to set the SandLog's internal clock. Step Key Description of Action ------------------------------------------------ 6 [1] Select Set Clock function The clock time of the MultiCorr MKII and SandLog are now shown on the screen (both date and time). To set the time in the SandLog to the same as the MultiCorr MKII (the SandLog's clock will be a few seconds after MultiCorr MKII's clock): Step Key Description of Action ------------------------------------------------ 7 [1] Select Set Time Hint: It is recommended to synchronise the clocks of the MultiCorr MKII and the SandLog with

the platform/plant time (process log). For setting of the MultiCorr MKII internal clock, it is referred to section 11.2. Logger Reset This function enables the user to reset the SandLog. Warning: This function clears the System Setup parameters and data stored in the

SandLog. To enter this function, use the key stroke procedure: Step Key Description of Action ------------------------------------------------ 6 [2] Select Logger reset 7 [Ent] Press enter to confirm Press any other key to interrupt the procedure


- - SL STATUS - - +12 : 10.2 V -12 : 10.6 V TMP 16.4 C Free mem : 2180 Log.int: hh:mm Date : YY/MM/DD Time : hh:mm:ss

Logger Status This function enables the user to read the system 'Status' of the SandLog (figure 34). In the display, menu the user obtains information about the battery voltages, the SandLog internal temperature, the amount of free memory and the logging interval if automatic measurements are enabled, and the logger date and time. The "+12V" is the positive battery voltage with a nominal voltage of around +12V. The "-12V" is the negative battery voltage with nominal voltage of around -12V. If the voltages are less than +/- 9.4 V, the batteries should be replaced as soon as possible (or charged if NiCd batteries are used) . The "TMP" is the internal temperature in the SandLog housing. This value is not recorded but should be monitored to ensure that the internal temperature does not exceed 70 deg C. The "Free mem" indicates the amount of available memory in SandLog, i. e. the number of measurements that still can be taken. '0' indicates memory full, '3000' indicates empty memory. Remember that one sand probe measurement requires 4 buffers; if two sand probes are connected, 8 buffers are occupied every time a measurement is performed. The "Log.int." denotes the measurement interval specified for automatic measurements (hh:mm). To access this function, use the following key strokes: Step Key Description of Action ------------------------------------------------ 6 [3] Select Status Menu 7 [Exit] Return to Sand Setup Menu


- - SL INIT - - SL address: No.Sand-pr:

Clear Memory This function enables the user to 'Clear' the internal memory of the SandLog. The function leaves the pre-programmed settings like the current setting, and the measurement intervals unchanged. Warning: This function clears the stored measurements in the SandLog. To enter this function, use the key stroke procedure: Step Key Description of Action ------------------------------------------------ 6 [4] Select Clear memory 7 [Ent] Press enter to confirm Press any other key to interrupt the procedure Hint: When data has been transferred from the SandLog to the MultiCorr MKII, this function

will normally be performed. FB Setup This menu is applicable only if used with the Fieldbus version of the Sand Monitoring System. This is not further described in this manual. Logger and Probe Setup This function (figure 35) defines the SandLog address and the number of sand probes connected to it. Key strokes are: Step Key Description of Action ------------------------------------------------ 6 [6] Enter SandLog Setup Menu 7 [xxx] Enter SandLog address (1 to 255) 8 [1 or 2] Enter the number of sand probes


*** TRANSMIT *** 1: Trans. to PC 2: Rec. from log 3: Show Trm.Data 4: Term. Status 5: Logger Status 6: Clear Term

16.2.4 Logger Status See description of Logger Status under section 16.2.3. This function should be used at regular intervals to check the battery voltage and available memory in the SandLog. 16.3 Transfer Data The Transfer Data Menu (figure 36) contains functions for data communication between the terminal and the SandLog, and between the terminal and the user's Personal Computer (PC). It is important that the complete Sand Monitoring System, including SandRater (the PC software) is correctly setup prior to data logging and transfer. This is usually done during commissioning of the system. Please refer to "SandRater Sand Monitoring Program Operating Manual", CorrOcean Doc. no.: 0200-101 for further description. The transmission speed of data is specified in the MultiCorr MKII advanced mode, please see section 12.4. Normally the user can use the default value 9600 Baud, but when necessary other values can be chosen to suit the PC serial port set up. For data transmission to a PC, the function 'Transmit to PC' is specified. When the user wants to retrieve data from a SandLog, the function 'Rec. from Log' is the correct choice. In the 'Transfer Data' Menu there are also functions for showing data received from the SandLog, the status of the MultiCorr MKII and the status of the SandLog. To check the data stored in the SandLog, use the 'Show Log Data' function via the Logger Manager menu (sections 16.2 and 16.2.2). It is recommended that the MultiCorr MKII battery is fully charged prior to transmitting data. If the transmission is not successful, the data is still held in the SandLog memory and the unit can be recharged prior to making a second attempt. To gain access to the 'Transfer Data' Menu the following key strokes are used: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode (2a [1] Go to SandLog Terminal) 3 [2] Go to Transfer Data Menu


16.3.1 Transfer to PC For the transmission of the collected data from the SandLog to a Personal Computer (PC) the function 'Transfer to PC' is used. Before executing this function the communication cable branch must be connected through one of the RS-232 serial ports of the PC. The PC should also be loaded with the SandRater software and set up to receive the corresponding SandLog/probe information. Please see "SandRater Sand Monitoring Program Operating Manual" for details. Switch on the MultiCorr MKII prior to starting the PC program. When the 'Transfer to PC' function is selected, the data will be transferred from the terminal memory to the SandRater program. For executing this function, use the following key strokes: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode (2a [1] Go to SandLog Terminal) 3 [2] Go to Transfer Data Menu 4 [1] Start data transmittal to the PC Please consider the following precautions to prevent any interruption in the data transmission: 1. Switch the MultiCorr MKII on prior to starting the receive data function in SandRater. 2. Make sure the cable is securely fastened to the correct serial port. The serial ports of the

computer must be correctly identified and the same port identification must be selected in the SandRater software setup file "nodefile.dta" as explained in "SandRater Sand Monitoring Program Operating Manual".

3. Carefully examine cables, connections and pins to ensure there is no damage. 4. Make sure the batteries of the MultiCorr MKII are fully charged. An overnight charge is sufficient if the batteries are low. After a successful transmission of data to the PC, the operator would normally select the 'Clear Terminal Memory' function (see section 16.3.6).


16.3.2 Receive Data from SandLog After a successful setup of the SandLog, the probe measurements are automatically executed at the defined interval(s). When the user wants to retrieve the measured data, the 'Receive from Logger' function is used. This function makes it possible to download data from the SandLog memory directly to the MultiCorr MKII memory. Before executing this function the flexible instrument cable must be connected to the SandLog with the MultiCorr MKII switched off. To execute this function, use the following key strokes: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode (2a [1] Go to Sand Terminal) 3 [2] Go to Transfer Data Menu 4 [2] Start data retrieval from the SandLog To prevent any interruption in the data transmission, make the same security checks as for Transfer to PC (section 16.3.1). When data is retrieved from the SandLog by this procedure, the data is not automatically removed from the SandLog memory. After a successful data transfer, it is recommended to check the data in the MultiCorr MKII memory and then remove them from the SandLog memory (to release memory for storage of new measurements). For instructions for this operation please see "Clear memory" in section 16.2.3.


*** SHOW DATA *** 1: Select Probe 2: Dsp. Term Data Probe= Sand 5 Logg_05_1

16.3.3 Show Terminal Data In the 'Show terminal data' menu (figure 37) of the MultiCorr MKII the user can view the measured data that has been transferred to the MultiCorr MKII. To enter the menu, use the following key stroke procedure: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode (2a [1] Go to Sand Terminal) 3 [2] Go to Transfer Data Menu 4 [3] Enter the Show Data submenu The last two lines on the screen identifies the selected probe. In the above example, "Logg_05_1" is the "tag number" referred to in section 4.5. This "tag number" is used internally in the terminal memory only, and is automatically generated. The above "tag number" indicates that data from a SandLog with address 05, sand probe no. 1 is selected.


- - - RAW DATA - - - Meas no 1 Meas : xx.xx mohm Ref : xx.xx mohm Pos : xxx - xxx Logg : 5 El : 1 Date : YY/MM/DD Time : hh: mm: ss

Select Probe Data to view is selected by the following key strokes: Step Key Description of Action ------------------------------------------------ 5 [digit][Ent] Enter SandLog address 6 [digit][Ent] Enter probe no. (1 or 2) Data is then displayed by the following key strokes: Step Key Description of Action ------------------------------------------------ 9 [2] Display data The data shown is in the same format as described in section 16.2.2, except line 2 of the display, where measurement no. is given instead of probe no. Arrow keys can be used to scroll data. The newest measurement is shown as default. Example of data displayed is given in figure 38, for a station with address no. 5. NOTE: In line 2, the figure shown as 'meas no.' may be used to derive the number of used buffers,

remembering that one measurement on one sand probe occupies 4 buffers.


*** STATUS *** SW ver. 2.00 Free mem: 2952 Pos Batt: 6.98V Neg Batt: -7.42V Date: 96/01/26 Time: 08:54:18

16.3.4 Terminal Status In the 'Terminal Status' display (figure 39) the user can read the amount of used memory, available memory, and the time and date set in the MultiCorr MKII. This function should be selected after each receipt of data, to check that all the data has been successfully transmitted from the SandLog. Total memory capacity in the MultiCorr MKII is 3000 buffers. Sand probe readings will use 4 buffers for each probe reading, which means 8 buffers for one reading on two sand probes. Please note that some of the memory may be occupied by MultiCorr or MultiLog readings. If you need full memory capacity you may have to transfer these data to a PC for storage before you clear the memory in the different modes. This is not applicable if the MultiCorr MKII is used as a SandLog Terminal only. "Free mem" indicates the amount of available memory. The window also displays the date and time set in the terminal along with the SandLog software version. Key strokes for executing the function are: Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode (2a [1] Go to SandLog Terminal) 3 [2] Go to Transfer Data Menu 4 [4] Go to Terminal Status Window 5 [Exit] Go back to Transfer Data Menu


16.3.5 Logger Status See description of Logger Status under section 16.2.3. This function should be used at regular intervals to check the battery voltage, internal temperature and available memory in the SandLog. 16.3.6 Clear Terminal Memory This function enables the user to clear the MultiCorr MKII memory for SandLog data. The function should not be used before data is transmitted to the PC unless it is used to clear undesired data. The function should be used to clear data from the terminal memory after transmission of data to the PC. Warning: This function clears all SandLog data stored in the MultiCorr MKII

memory. Other data types (Ordinary MultiCorr readin gs or MultiLog data) are, however, not affected.

Step Key Description of Action ------------------------------------------------ 1 [On/Off] Turn on MultiCorr MKII 2 [3] Go to Terminal Mode (2a [1] Go to Sand Terminal) 3 [2] Go to Transfer Data Menu 4 [6] Go to Clear Memory Window 5 [Ent] Press enter to confirm Press any other key to interrupt the procedure.


APPENDICES


APPENDIX A: MultiCorr MKII Specifications Physical Characteristics Dimensions: 10" x 41/4" x 2" (255mm x 107mm x 46 mm) Weight: 2.7 lbs (1235 g) Storage capacity: 3000 Measurement Accuracy: +/- 0.5% over the Temperature Range Operating temp: 15oF to 115oF (-10oC to +55oC) Hazardous area: 15oF to 105oF (-10oC to +40oC) Storage temperature: -5oF to 160oF (-20oC to +70oC) Storage humidity: Up to 95% Power supply: Rechargeable NiCd battery. (Specially designed for MultiCorr

MKII) Battery charger: 110V/60 Hz or 220V/50 Hz Certification: EEx ia IIC T3, IP 54 NEMKO No: Ex 95 D III X Calibration The MultiCorr instrument does not require any field calibration. It is delivered calibrated by the factory when new. CorrOcean will calibrate the instrument on request, and recommend calibration once every year. The instrument performs and internal calibration every time it is turned on, and during this time the display shows "Calibrating.". This is an internal calibration where some circuits inside the instrument are calibrated. This internal calibration is not related to the external calibration (factory) mentioned above. If there is a desire to check the MultiCorr against a reference standard, a calibrated "Test Probe" may be obtained from CorrOcean. This test probe should also be calibrated by CorrOcean once every year. Please specify the type of probe - ER, LPR or other, and the desired reading test range. Use of test standards manufactured by other than CorrOcean is generally not recommended. 1. The Test Probes used for LPR readings have reset values for the working electrode area

and B Constant. If these are known they can be established in the MultiCorr MKII, but this may not resolve the incompatibility between the Test Probe is established through electronic components rather than a normal dynamic system. The electronic polarization in the Test Probe may not be consistent with the polarization responses needed to check the accuracy of the MultiCorr MKII.


APPENDIX A: MultiCorr MKII Specifications (Continue d) 2. ER Test Probes have an electrical resistors representing the measuring and reference

electrodes. To utilize the MultiCorr MKII with these Test Probes the user must be able to set a Multiplier Value consistent with the electrical resistors within the Test probe.

Many traditional probe monitoring instruments are based upon an Electrical Bridge Balance Reading. Additionally, these units use a "Dial Reading" measurement to calculate results. In these units the corrosion calculations are based upon manual methods that necessitate simplifying dial readings to a linear relationship. The net result of the electrical measurement approach and calculation process is that the actual results may be in error. For that reason these types of units must be calibrated prior to every measurement. Since the MultiCorr MKII uses precise electrical measurements and software based calculations not simplifying formulas are required.


APPENDIX B: ER Probe Technical Information GENERAL - Electrical Resistance Probes Electrical Resistance Probes are designed to measure corrosion based upon changes in the electrical resistance of an exposed element. The exposed element can be any electrically conductive material but will generally be either carbon or stainless steel. The element can be a thin flat strip embedded in another material or it may be a fully exposed wireloop or a tubular element. As the exposed element corrodes the cross sectional area decreases and the resistance to a known current increases proportionally. ER Probes also have a Reference Element which normally has the same initial resistance as the measuring element but which is not exposed to the corrosive environment. Using these elements on a comparative resistance basis allows a calculation to be made of the Total Accumulated Corrosion. A Third Element known as a Check Element is normally present to test whether there has been a leak into the area of the embedded Reference Element. ER Probes provide the total corrosion at the time a reading is performed. To obtain a corrosion rate a prior reading must be available as well as the time that the prior reading was obtained. The MultiCorr MKII can handle any Electrical Resistance (ER) Probe with a measurement element resistance between 1 mOhm and 10 Ohm. This means that it should be possible to monitor all commercially available ER Probes. ENTERING PROBE PARAMETERS IN THE MultiCorr MKII The MultiCorr MKII is capable of working with any type of ER Probe and can compute the total corrosion for any of these differing probes. This is possible since the unique Probe Characteristics and Parameters are held in the internal memory by the MultiCorr MKII. The essential key to obtaining accurate results is insuring that the Probe Characteristics and parameters are accurately entered into the MultiCorr MKII. Section 7.2 provides information on entering ER probe information. This section provides additional information on the understanding and use of ER Probe parameters.


APPENDIX B: ER Probe Technical Information (Continued) MultiCorr MKII ER Probe Types Tubular Probes - The MultiCorr MKII lists two of the most common types of Tubular

Probes, the T10 and the T20. These probes have an exposed element thickness of 10 mils and 20 mils, respectively. Because these Tubular probes have known characteristics there is no need to enter additional information in to the MultiCorr MKII.

If you are using a tubular probe that is different than the standard T10 or T20 select "Special" for

the Probe Type. Wireloop Probes - Wireloop probes are considered separately from other ER Probes because

of the manner in which the total corrosion is calculated. When the user selects a wireloop probe the MultiCorr MKII will use a different formula to calculate the total corrosion. A different corrosion formula is utilized since the exposed element on a wireloop is normally twice as long as the reference element.

Special Probes - Basically, special probes are all probes that are not T10, T20 or standard Wireloop

Probes. This selection requires that additional information be entered so the MultiCorr MKII can properly calculate the total corrosion in the probe.

Multiplier Values ER Probes vary not only in the thickness of the measuring element but also in the standard engineering units used to express that thickness. For this reason the MultiCorr MKII uses a Constant called a Multiplier to make corrosion calculations. Whenever an operator selects a "Wireloop" or "Special" ER Probe type the MultiCorr MKII will request that a multiplier be entered. The Multiplier in the MultiCorr MKII is defined as: The Measuring Element Thickness in mils x 25 OR The Measuring Element Thickness in mm x 1000


APPENDIX B: ER Probe Technical Information (Continued) The actual thickness of the measuring element can be found in the Probe Manufacturer's Data Sheets. Table B-1 in this Appendix provides a listing of common probes and their respective multipliers. NOTE: Some probe manufacturers specify a multiplier for their probes, which may be defined differently than the definition provided above. Often times these multipliers are 50% of the probe's measuring element thickness. For this reason it is recommended that the Multiplier be based on the actual Measuring Element thickness and the Multiplier Definition provided above. Conceal % Values In some of the more sophisticated ER Probes the Measuring Element is not fully exposed to the corrosive environment. In these instances it is necessary to enter information on how much of the element surface is concealed from the corrosive environment. In the MultiCorr MKII the Conceal % is applicable only if a part of the measuring element is covered by a potting compound or is not exposed to corrosion. The Conceal % in the MultiCorr MKII is defined as: The percentage of the Measuring Element not exposed to the corrosive environment. Table B-1 in this Appendix provides a listing of common probes and their respective Conceal %. ER READINGS, TOTAL CORROSION AND CORROSION RATE The MultiCorr MKII provides the user with a wide variety of useful information that can be used by the Corrosion Specialist in evaluating not only the corrosion environment but also the quality of the readings and the integrity of the ER Probe. When displaying ER Probe results the MultiCorr MKII provides data on the Electrical Measurements, Digits Value, Total corrosion and Corrosion Rate. Each of these are discussed separately. Electrical Measurements After an ER Measurement is performed by the MultiCorr MKII the actual electrical resistance measurements for all three elements are shown as part of the Raw Data screen display.


APPENDIX B: ER Probe Technical Information (Continued) Measurement Element - This is the electrical resistance in the element subjected to the corrosive

environment. Normally this resistance reading will equal to the Reference Element in a new thin element probe. In a wireloop probe the initial resistance will be approximately twice as large as the resistance in the Reference Element. By noting these relationships the user can evaluate whether a new probe is a standard design.

Reference Element - This reading is the electrical resistance of the element that is not

exposed to any corrosive environment. The reading will remain about the same whenever a reading is taken. When the ratio of the Measurement Element Resistance is compared to the Reference Element Resistance the actual total corrosion can be measured. The actual formulas used by the MultiCorr MKII are provided later in this Appendix.

Check Element - This is basically a second reference element but it is not used in

any calculations. Its purpose is to provide the user with another reference for evaluating the quality of the probe. For CorrOcean probes the Reference Element Resistance and the Check Element Resistance should always be approximately equal. If these two resistances are not equal it means that some corrosion of one of the two elements has taken place or that there is damage to the cables. Corrosion of the elements can only occur if the ER Probe is allowing leakage into the probe body which means the ER Probe should be replaced.

It is a good practice to observe the check element readings to determine if the probe is leaking. It may even be advisable to record these electrical measurements. Digit Values The MultiCorr MKII calculates a Digit Value and shows this in the Raw Data Display. The Digit Value is calculated differently for thin element Probes and Wireloop Probes. The Digit Value is also utilized to calculate the Total Accumulated Corrosion in the ER Probe. The formulas for calculating the Digit Value are provided in the Formulas Section of this Appendix.


APPENDIX B: ER Probe Technical Information (Continued) The Digit Value provides a quick method for the MultiCorr MKII user to evaluate what portion an ER Probe has been corroded. Many corrosion specialists consider replacing ER probes when the probes are between 50% and 75% corroded. For a new Probe the Digit Value is approximately = 0 For a 50% corroded element the Digit Value is about = 1000 A new ER Probe may have a Digit Value that is slightly above or below zero due to slight variations in the machined element thicknesses. Corrosion Rate ER measurements provide a total accumulated corrosion of the exposed element. To calculate a corrosion rate the MultiCorr MKII must have at least two (2) readings taken at different times. The MultiCorr MKII uses a default corrosion rate calculation based upon the last two (2) stored in the MultiCorr MKII. The user can select a longer time period to make the rate calculation if additional readings are stored in the unit. Corrosion Rate calculations based on ER Readings that have a short time interval may be inaccurate due to the limited period during which the elements were exposed. For this reason, longer time intervals between the readings used for the corrosion rate calculation are recommend-ed. Total Corrosion ER Probes provide a measurement of the Total Accumulated Corrosion of the probe. To determine whether there is an active corrosion process in the system the user needs to take more than one reading and compare the results with previous readings. The change in Total Corrosion over time is the Corrosion Rate and is discussed below. If the Total Accumulated Corrosion is presented in the MultiCorr MKII as a negative number the most likely cause is that the wrong type of ER Probe has been entered for that Probe Number. For instance, if a T10 ER Probe is being used and user has erroneously entered the probe type as a Wireloop Probe the total Corrosion will most likely be a negative number.


APPENDIX B: ER Probe Technical Information (Continued) ER PROBE FORMULAS Digit Value - Thin Element Probe Digit = (Rmeas/Rref - 1) * 1000 Digit Value - Wireloop Probe Digit = (Rmeas/Rref - 2) * 500 Accumulated Corrosion - Thin Element Probe Accumulated Corrosion = M * 1 - 1 Digit + 1 1000 * (1-P) where; M = Multiplier and P = Conceal Accumulated Corrosion - Wireloop Probes Accumulated Corrosion = M * 1/2 * 1 - 1

Digit + 1 1000 * (1-P) where; M = Multiplier and P = Conceal Corrosion Rate (Metal loss) * 365 days/year Corrosion Rate = (Exposed time) days


APPENDIX B: ER Probe Technical Information (Continued) MULTIPLIER AND CONCEAL % VALUES Table B-1 Element Probe Type Thickness Multiplier(Conceal %) CorrOcean ER Probes: Repro A (Part No 13003-L) 6.0 mm 6000 0 Repro A (Part No 13002-L) 2.0 mm 2000 0 Repro B (Part No 13006-L) 0.2 mm 200 0 Repro B (Part No 13005-L) 0.4 mm 400 0 Repro B (Part No 13047-L) 0,25 mm 250 0 Repro B (Part No 13046-L) 0,5 mm 500 0 Repro C (Part No 13011-L) 0.5 mm 500 30 Repro C (Part No 13010-L) 1.0 mm 1000 9 Standard Tubular ER Probes: T4 4 mils 100 0 T8 8 mils 200 0 T10 10 mils 250 0 T20 20 mils 500 0 T50 50 mils 1250 0 Standard Wireloop ER Probes: W40 40 mils 1000 0 W50 50 mils 1250 0 W60 60 mils 1500 0 W80 80 mils 2000 0 Flush Surface ER Probes: S2 2 mils 50 0 S4 4 mils 100 0 S8 8 mils 200 0 F10 10 mils 250 0 F20 20 mils 500 0


APPENDIX B: ER Probe Technical Information (Continued) The Multiplier in the MultiCorr MKII is defined as: The Measuring Element Thickness in mils x 25 OR The Measuring Element Thickness in mm x 1000 NOTE: Some probe manufacturers specify a multiplier for their probes, which may be defined differently than the definition provided above. Often times these multipliers are 50% of the probe's measuring element thickness. For this reason it is recommended that the Multiplier be based on the actual Measuring Element thickness and Multiplier Definition provided above. The Conceal % in the MultiCorr MKII is defined as: The percentage of the Measuring Element not exposed to the corrosive environment.


APPENDIX C: LPR Probe Technical Information GENERAL - Linear Polarization Resistance (LPR) Probes LPR Probes can provide the user with a direct and instantaneous estimate of the corrosion rate rather than information on time related changes in the thickness of an exposed element as is the case with Electrical Resistance (ER) Probes. The LPR Probe method is based on the Stearn-Geary equation and the concept that the corrosion rate of a probe is inversely proportional to its polarization resistance. LPR Probe Uses and Limitations For LPR Probes to be effective and truly reflective of the actual corrosion rate care must be used in both the placement of the probe and the selection of an appropriate product environment. LPR Probes must be located where an electrolyte is present with a reasonably low resistivity. Electrolytes with high resistivities may erroneously give the appearance of a low corrosion rate. LPR Probes are generally recommended for water systems, oil systems with high water contents and for the detection of corrosion due to the condensation of water. The electrolytic solution must be relatively free of products that may deposit on the electrode in a manner that reduces the electrical surface characteristics of the probe electrodes. LPR Probe corrosion rates are approximations but they can be very useful in evaluating systems during periods of rapid change in corrosion rates. LPR Probes may also be used with other electrochemical techniques such as AC Impedance and electrochemical noise measurements. LPR Probe Variations LPR probes are manufactured with either 2 or 3 electrodes. In a 2 electrode LPR Probe there is a Working Electrode and a Counter Electrode. A 3 electrode LPR Probe has an additional Reference Electrode. The Reference Electrode is utilized to check the stability of the polarization current. For that reason, its presence in the LPR Probe is advantageous in obtaining consistent results. The electrodes may vary both in terms of surface area and material. Calculations of corrosion rates from LPR Probes are dependent on knowing the surface area of the electrodes. Additionally, the electrode material may be varied to reflect system variations.


APPENDIX C: LPR Probe Technical Information (Continued) MultiCorr MKII LPR MEASUREMENTS The MultiCorr MKII allows the user to account for all the variables that may influence the corrosion rate results produced by LPR Probes. There are corrosion instruments from other manufacturers that are only capable of reading their own LPR Probes and in some cases these units cannot be programmed to account for variations in electrode areas and material. The Corrocean MultiCorr MKII can read any 2 Electrode or 3 Electrode LPR Probe regardless of the manufacturer, however correct probe cable has to be selected. LPR PROBE PARAMETERS Bconstant The Bconstant is the slope measurement of a Tafel Diagram. The Tafel Diagram is the current potential relationship that is produced when an electrode is polarized. The Tafel Diagram slope will vary with different materials and electrolytic environments, therefore the Tafel Bconstant will also vary with these changes. Ideally, the Bconstant should be measured for all the LPR reading calculations; however, this not is very practical for field applications. The MultiCorr MKII uses a default value of B=24 mV which is a typical Bconstant for carbon steel in saline water. For comparative monitoring techniques the absolute value of the Bconstant becomes less critical. Table C-1 in this Appendix provides examples of Bconstant Values which illustrate the variations that may occur with this Constant. If the Bconstant is substantially different than the MultiCorr MKII Default Value it is recommended that the user consult an electrochemical specialist familiar with the system to choose an appropriate value. Tables of various electrochemical Constants are also available in published literature. Electrode Area The MultiCorr MKII uses the area of the Working Electrode when calculating the Corrosion Rate. Therefore, having the correct Working Electrode Area is a very important variable in obtaining accurate results. It is recommended that the working electrode area be obtained from the Probe Manufacturer Data Sheets for the LPR Probe being utilized.


APPENDIX C: LPR Probe Technical Information (Continued) Table C-2 in this Appendix provides examples of Working Electrode Areas for some commercially available LPR Probes. NOTE: The areas in Table C-2 are for general guidance. The best source on probe information is the manufacturer Electrodes can be replaced and the actual area of the working electrode may be different than the area when the probe was originally placed into service. LPR READINGS AND MEASUREMENTS The MultiCorr MKII provides the user with a wide variety of information that can be used by the Corrosion Specialist in evaluating not only the corrosion environment but also the quality of the readings and the corrosivity of the system. When displaying LPR Probe results the MultiCorr MKII provides Raw Data in addition to the final Corrosion Rate. Each of the raw data displays is discussed below. Pitting Index The Pitting Index is a simplified method to quantify a tendency to pitting corrosion. It is not intended to be a substitute for more detailed potentiostatic or potentiodynamic evaluations. The Pitting Index is the ratio of the anodic and cathodic current densities. In a stable system where the anodic and cathodic current densities are equal the Index will be approximately 1. When the Index exceeds 2.0 it may be advisable to do additional evaluations of the system. Equally important is the changing trend of the Index. It is recommended that the Pitting Index be recorded to determine if it is changing over time. Ucat/Uan The end potential of the polarization in cathodic/anodic direction Icat/Ian The resulting current in cathodic/anodic direction. Icorr This is the Corrosion Current and is used to calculate the Corrosion current Density. It is a measure of the current flow from or to the LPR electrode depending on whether it is anodic or cathodic. It is displayed as IcorC and I corA for the cathodic and anodic measurement, respectively.


APPENDIX C: LPR Probe Technical Information (Continued) LPR PROBE FORMULAS Polarization Resistance Constant Bconstant = (ba * bk)/(2.303 * (ba + bk)) where: ba and bk are the respective anodic and cathodic Tafel slopes Corrosion Current Density icorr = B * _I/(A * _E) OR icorr = B * (_i/_E) where: B = Polarization Resistance Constant (mV) _I = Polarization Current (mA) _i = Polarization Current Density (mA/cm²) _E = Potential Shift (mV) A = Working Electrode Area (cm²)

Corrosion Rate Corrosion Rate = K * icorr where: K is a conversion factor from corrosion current to metal loss rate. The K value installed in

the MultiCorr MKII is correct for carbon steel electrodes, with density = 7.86 g/cm³ and a charge transfer of 2 C/mol. If other metals are used for the LPR Probe electrodes, the metal's density and charge transfer properties may be incorporated into the Bconstant for that metal.

Pit Index Pit Index = icorr(anodic)/icorr(cathodic) Pitting Corrosion Rate Pitting Rate = (Pit Index) * (Corrosion Rate).


APPENDIX C: LPR Probe Technical Information (Continued) Table C-1 Typical Ranges For Polarization Resistance Constant (Bconstant) Metal Electrolyte B Value (mV) Carbon Steel Sea Water 20 +/- 9 Carbon Steel Cooling/Tap Water 43 +/- 19 Carbon Steel Inhibited Water 38 +/- 29 Carbon Steel Chloride Solutions (Including Neutral, Acidic and Alkaline) 22 +/- 10 NOTE: Table of B Values for different environments are from Grauer, Moreland and Pini - A Literature Review of Polarization Resistance Constant (B) - Values for the measurement of Corrosion Rate, NACE 1982. Table C-2 Typical LPR Probe Working Electrode Surface Area Working Electrode Manufacturer LPR Probe Type Area (mm2) CorrOcean 3 Electrode Flush Mount Triple A approx 300 3 Electrode Flush Mount Triple B 300 3 Electrode Projecting Triple C 500 2 Electrode Projecting C 500 Petrolite 3 Electrode Projecting LPR 810 Rohrback Cosasco 2 Electrode Projecting Standard 500 2 Electrode Flush Mount 50 Please note that changes in the above standard areas may be done without notice.


APPENDIX C: LPR Probe Technical Information (Continued) NOTE: To Convert Areas Other than mm2 (square millimeters) to mm2 cm2 to mm2 Multiply by 100 in2 to mm2 Multiply by 645


APPENDIX D: Galvanic Probe Technical Information GENERAL Galvanic Probes Galvanic probes are often used in water injection systems in the oil and gas industry to evaluate corrosivity caused by variations in oxygen content. Variations in the oxygen content affect the galvanic current that flows between dissimilar metals. By monitoring changes in the galvanic current it is possible to evaluate the effectiveness of oxygen reduction systems. Galvanic Corrosion A brief summary of the mechanism of galvanic corrosion may be of assistance in understanding galvanic currents and the use of Galvanic Probes. Galvanic corrosion may occur when two metals or alloys are electrically coupled to each other in the same electrolytic fluid. Galvanic corrosion of the anodic material of the couple may result in general or localized corrosion. The essential elements for possible galvanic corrosion include a common electrolyte, a common electrical path and finally two (2) materials having different surface potentials. When a difference in the potential of two (2) dissimilar metals exist they may become coupled electrically and there will be an electron flow between the metals. The less corrosive resistant metal will tend to become anodic while the more corrosive resistant material will become cathodic in the couple. The driving force for the galvanic corrosion is directly proportional to the difference in the potential between the two (2) dissimilar metals. Galvanic corrosion in the field is also affected by other factors such as the distance between the metals, the relative surface areas and the shape of the parts. MONITORING GALVANIC PROBES Galvanic Currents Galvanic probes are manufactured with dissimilar metals of equal areas so that a Galvanic current will occur if an appropriate electrolytic solution is available. Therefore the purpose of the galvanic probe is not to evaluate the dissimilar metals but rather to evaluate the electrolytic solution. Galvanic Probes are often used to measure the presence of oxygen in a system. Most galvanic probes use carbon steel and brass since the brass is particularly sensitive to the amount of oxygen in the water. Galvanic currents are also affected by temperature, product flow rate, and the amount and quality of coatings which form on the electrode surfaces.


APPENDIX D: Galvanic Probe Technical Information (Continued) Current Measurements Because the current measurement is affected by deposits on the surface of the electrodes the galvanic currents may be relatively high after the initial installation of a galvanic probe. As deposits gradually build up on the electrodes the galvanic current will drop off until a steady current level is achieved. Comparison or calibration of a galvanic probe with known levels of oxygen content should be done after a stable condition has been achieved. MultiCorr MKII Readings The MultiCorr MKII can measure any Two Electrode Galvanic Probe. The result is displayed as Total Galvanic current therefore, no correction for area is required. The galvanic current is measured 30 seconds after the galvanic probe is connected. This delay is to allow the galvanic current to stabilize in case the probe's electrodes are not continuously short circuited.


APPENDIX E: Analog Probe Technical Information GENERAL An analog probe is any type of probe or sensor that emits an Analog Signal. The MultiCorr MKII can accept and store any digital analog signal so it is capable of working with a wide variety of analog signal sources. The MultiCorr MKII Analog Function has the following signal specifications: Signal Resolution: 0.6 µV Measurement area: +/- 2.4 V Voltages lower than 2,25 mV 0,5 % of 2,5 mV Voltages 2,25 mV- 22,5 mV 0,5 % of 22,5 mV Voltages 2,25 mV- 225 mV 0,5 % of 225 mV Voltages 225 mV- 2400 mV 0,5 % of 2500 mV WARNING Voltages higher than +/- 5V compared to earth in the meter may destroy the meter. TYPICAL ANALOG MONITORING SYSTEMS The Analog Probe Function may be used to accept data from a wide variety of signal sources which makes it one of the most versatile functions available on the MultiCorr MKII. Some of the possible systems where the Analog Function may be used are as follows: 1. CP Systems 2. Temperature Sensors 3. Electrochemical Hydrogen Probes 4. Reference Electrodes 5. Pressure Sensors


APPENDIX F: Potentiostatic and Potentiodynamic Procedures General Potentiostatic and Potentiodynamic tests are used to evaluate the tendency of a material for pitting or crevice corrosion. These tests are often performed in conjunction with inhibitors so that the quality of the inhibitor film may be evaluated. When the MultiCorr MKII is equipped with the Potentiostatic and Potentiodynamic Function, it will be programmed to execute these tests. MultiCorr MKII Potentiostatic and Potentiodynamic M easurements Potentiostatic and Potentiodynamic measurements may be performed on any LPR probe, or any other 3 electrode cell. The working electrode may be polarized +/- 1200 mV relative to the reference electrode. Maximum polarization current is 48 mA. Polarization rate, polarization step, polarization limits (potential and current) as well as which directly to run first (Cathodic/Anodic) is selected by the user. There will be a 5 minute delay between the cathodic and anodic scan to allow the system to stabilize. The Potentiostatic Polarization sequence is carried out as follows: Polarization Increments: As specified by user (please see section 7.6) maximum 100 steps per scan Measurement Intervals: Same as polarization increments The Potentiodynamic Polarization sequence is carried out as follows: Polarization Rate: As specified by user Measurement Intervals: Defined as polarization steps. All polarization measurement sequences will terminate when the maximum current or maximum potential is reached (selected by user within above limits). Cyclic polarization The cyclic polarization is performed as a potentiodynamic scan. The scan is run to the selected maximum current/potential. It is then run back to the corrosion potential. There will be a 5 minute pause between the cathodic/anodic scan.


APPENDIX G: MultiCorr MKII Error Messages ER probe open! The MultiCorr was not able to drive enough current through the probe. The probe may be damaged, the cable may be damaged or incorrect cable may be used. Please also check that all connectors are connected. ER probe unstable! The MultiCorr reads the voltage across the reference element in the ER probe until it gets two consecutive readings that are very close. If it is not able to do that within 30 seconds, the measurement will terminate with this error message. The probable cause is a probe or cable that is damaged, or a radio transmitter nearby (i.e. a mobile telephone). LPR reading unstable! The MultiCorr will output a polarisation voltage to the LPR probe and then wait for 30 seconds for the system to stabilise. After that the MultiCorr starts to monitor the probe current. If the current variation does not fall below 1 % per second within 2 minutes, the measurement terminates with this error message. The probable cause is an unstable chemical system, a faulty probe or a faulty cable. Memory full! The Multicorr has no more memory buffers for storing data. You will have to delete a probe with measurements or clear the entire memory before attempting a new measurement. To slow polarisation specified! The polarisation was specified so slow that the waiting time between measurement may cause internal overflow in the MultiCorr program. Since the limit is 5000 seconds, the probable cause of this error message is that you made an error when specifying the polarisation parameters. Low battery detected The battery in the MultiCorr MKII is low. Please charge. Rec. timeout. No response from logger A command was sent to the logger, but the logger did not respond within the timeout period. Try to resend the command once or twice to see if the error is persistent. The probable reason for this message is that the logger is not switched on. Normally the logger switches itself on when being connected to the terminal and the terminal is switched on. If the logger has been inactive for a certain period, it will switch itself off and is turned on again the next time the terminal sends a request. If the logger does not respond after several retries, switch the terminal off for at least 60 seconds, and retry. If no response from the logger can be obtain, the batteries are most likely discharged. Rec. error. Wrong resp. from logger A communication error. The logger has sent a response to the terminal which the terminal does not accept. Check for bad cable connections. Also switch the terminal off for at least 60 seconds and retry. This could also be caused by low battery conditions on the logger or the terminal. Transmit error!. NAK received from PC A communication error between the PC and the terminal. Check the cable connection and the battery status on the terminal. This error could also be caused by a low battery condition on the terminal.


Not enough memory. There is not enough free memory on the terminal to receive the readings stored in the logger. Check the terminal status to see the amount of free memory. If the readings in the terminal has already been transmitted to the PC, the readings may be cleared, and another attempt to receive data from the logger may be performed. Make sure that the memory on the terminal is cleared and NOT on the logger.


APPENDIX H: Service and Technical Information Sources TECHNICAL INFORMATION Questions concerning MultiCorr MKII Instrument can be directed to the nearest worldwide office of CorrOcean. Please see the back of this manual for address and telephone/telefax.


APPENDIX I: Hazardous Area Certificate (Document CAS-Ex-019)






APPENDIX J: MultiCorr MKII Menu Pattern

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605-16959-I-MU-0011-04-MultiCorr MKII User Manual … · 2017-06-25 · MultiCorr MKII - User Manual Page: 8 2 REFERENCE DOCUMENTS The MultiCorr MKII portable corrosion monitoring