Rosemount Conduct Trans 2wi 1181

Model 1181C

Two-Wire Transmitter

Instruction ManualPN 5101181C

May 2000

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DANGERHAZARDOUS AREA

INSTALLATION

INTRINSICALLY SAFE INSTALLATIONInstallations in hazardous area locationsmust be carefully evaluated by qualifiedon site safety personnel. Transmitter andSensor alone are not Intrinsically safe. Tosecure and maintain an intrinsically safeinstallation, a certified safety barriermust be used and the installation mustcomply with the governing approvalagency (FM, CSA or BASEEFA/CENELEC) installation drawingrequirements (see Section 2.0 -Installation).

EXPLOSION-PROOF INSTALLATIONCaution: Sensors are not explosion-proof. If the sensor must be installed in ahazardous location an intrinsically safesystem must be implemented. To maintain the explosion-proof rating ofthe transmitter, the following conditionsmust be met:

Discontinue power supply beforeremoving enclosure covers.

Transmitter covers must be properlyinstalled during power on operation.

Explosion proof "Y" fittings must beproperly installed with sealingcompound prior to applying power tothe transmitter.

Serial tag cover over the external Zeroand Span adjustments must be inplace.

See Installation Section for details.

Proper installation, operation andservicing of this instrument in aHazardous Area Installation is entirelythe responsibility of the user.

SS-1181Feb. 1992

ESSENTIAL INSTRUCTIONSREAD THIS PAGE BEFORE PROCEEDING!

Rosemount Analytical designs, manufactures, and testsits products to meet many national and internationalstandards. Because these instruments are sophisticatedtechnical products, you must properly install, use, andmaintain them to ensure they continue to operate withintheir normal specifications. The following instructionsmust be adhered to and integrated into your safetyprogram when install ing, using, and maintainingRosemount Analytical products. Failure to follow theproper instructions may cause any one of the followingsituations to occur: Loss of life; personal injury; propertydamage; damage to this instrument; and warrantyinvalidation.

Read all instructions prior to installing, operating, andservicing the product. If this Instruction Manual is notthe correct manual, telephone 1-800-654-7768 and therequested manual wil l be provided. Save thisInstruction Manual for future reference.

If you do not understand any of the instructions,contact your Rosemount representative for clarification.

Follow all warnings, cautions, and instructions markedon and supplied with the product.

Inform and educate your personnel in the properinstallation, operation, and maintenance of the product.

Install your equipment as specified in the InstallationInstructions of the appropriate Instruction Manual andper applicable local and national codes. Connect allproducts to the proper electrical and pressuresources.

To ensure proper performance, use qualif iedpersonnel to install, operate, update, program, andmaintain the product.

When replacement parts are required, ensure thatqualified people use replacement parts specified byRosemount. Unauthorized parts and procedures canaffect the products performance and place the safeoperation of your process at r isk. Look alikesubstitutions may result in fire, electrical hazards, orimproper operation.

Ensure that all equipment doors are closed andprotective covers are in place, except whenmaintenance is being performed by qualified persons,to prevent electrical shock and personal injury.

Rosemount Analytical Inc.Uniloc Division2400 Barranca ParkwayIrvine, CA 92606 USATel: (949) 863-11811-800-854-8257www.RAuniloc.com

Rosemount Analytical Inc. 1999

iModel 1181 C TABLE OF CONTENTS

MODEL 1181CTWO-WIRE TRANSMITTER

TABLE OF CONTENTS

Section Title Page 1.0 DESCRIPTION AND SPECIFICATIONS................................................ 11.1 Features and Applications ................................................................... 11.2 Physical Specifications......................................................................... 21.3 Instrument Specifications ..................................................................... 21.4 Ordering Information ............................................................................ 4

2.0 INSTALLATION..................................................................................... 52.1 General................................................................................................. 52.2 Mechanical Installation......................................................................... 52.3 Electrical Installation............................................................................. 52.4 Hazardous Locations-Explosion-Proof Installations ............................. 62.5 Hazardous Locations-Intrinsically Safe Installations ............................ 6

3.0 START-UP AND CALIBRATION ........................................................... 183.1 Start-Up ................................................................................................ 183.2 In-Situ Calibration by Grab Sample Analysis ....................................... 183.3 Calibration Using A Conductivity Standard or Process Grab Sample ...... 203.4 Two Point Calibration............................................................................ 203.5 Electronic Bench Check....................................................................... 213.6 Start-Up: LCD ....................................................................................... 223.7 LCD: Module Only ................................................................................ 223.8 LCD: With 1181C.................................................................................. 23

4.0 THEORY OF OPERATION .................................................................... 284.1 General................................................................................................. 284.2 Lift-Off Voltage...................................................................................... 284.3 Power Supply Module .......................................................................... 284.4 Temperature Compensation Circuit ..................................................... 284.5 Output Signal........................................................................................ 28

5.0 MAINTENANCE AND TROUBLESHOOTING ....................................... 305.1 General................................................................................................. 305.2 Troubleshooting.................................................................................... 305.3 Maintenance......................................................................................... 315.4 Temperature Module Replacement...................................................... 31

6.0 PARTS LIST .......................................................................................... 346.1 General................................................................................................. 34

7.0 RETURN OF MATERIAL ....................................................................... 387.1 General................................................................................................. 387.2 Warranty Repair.................................................................................... 387.3 Non Warranty Repair ............................................................................ 38

Model 1181 C TABLE OF CONTENTS

ii

TABLE OF CONTENTS (Continued)

LIST OF TABLESNumber Title Page

3-1 Switch Settings/Probe Constant vs. Full Scale Conductivity.............................................. 183-2 Requirements/Corresponding Parameters......................................................................... 233-3 Table of Equivalent Resistances ........................................................................................ 255-1 Troubleshooting.................................................................................................................. 306-1 Replacement Parts List ...................................................................................................... 346-2 S-Assy, Electronics............................................................................................................. 35

LIST OF FIGURESNumber Title Page

1-1 Mounting and Dimensional Drawing .................................................................................. 11-2 Temperature Slope Adjust ................................................................................................. 22-1 Transmitter Mounting Details.............................................................................................. 52-2 Transmitter Wiring Details .................................................................................................. 62-3 CENELEC Intrinsically Safe Installation (1 of 3) ................................................................. 72-4 Installation of 1181 Series for Intrinsically Safe Operation (2 of 3)..................................... 82-5 Installation of 1181 Series for Intrinsically Safe Operation (3 of 3)..................................... 92-6 Schematic, System 1181C, CSA ....................................................................................... 102-7 FM Intrinsically Safe Installation, Factory Mutual (FMRC) Installation (1 of 3) ................... 112-8 FM Intrinsically Safe Installation, Factory Mutual (FMRC) Installation (2 of 3) ................... 122-9 FM Intrinsically Safe Installation, Factory Mutual (FMRC) Installation (3 of 3) ................... 132-10 Schem, System FM Explosion-Proof 1181 ......................................................................... 142-11 FM Intrinsically Safe Loop Installation (1 of 3).................................................................... 152-12 FM Intrinsically Safe Loop Installation (2 of 3).................................................................... 162-13 FM Intrinsically Safe Loop Installation (3 of 3).................................................................... 173-1 Controls and Switches Location Diagram.......................................................................... 193-2 Electric Bench Check Set-Up............................................................................................. 213-3 LCD Module Set-Up Wiring................................................................................................ 223-4 LCD Calibration .................................................................................................................. 243-5 LCD Unit Test Wiring.......................................................................................................... 253-6 Transmitter Board .............................................................................................................. 263-7 Transmitter Board .............................................................................................................. 274-1 Simplified Block Diagram................................................................................................... 295-1 Schematic, 1181 CNDT, CSA (1 of 2) ............................................................................... 325-2 Schematic, 1181 CNDT, CSA (2 of 2) ............................................................................... 336-1 Model 1181 C Two-Wire Transmitter .................................................................................. 356-2 Transmitter PCB ................................................................................................................ 366-3 Power PCB ........................................................................................................................ 366-4 Driver PCB ......................................................................................................................... 376-5 Signal Conditioning PCB.................................................................................................... 37

1Model 1181 C SECTION 1.0DESCRIPTION AND SPECIFICATIONS

SECTION 1.0DESCRIPTION AND SPECIFICATIONS

1.1 FEATURES AND APPLICATIONSThe Rosemount Analytical Two-Wire field mounted

transmitters, with the appropriate sensors, aredesigned to continuously measure the pH, ORP,Conductivity, Dissolved Oxygen, or Free ResidualChlorine in industrial processes.The Model 1181 Transmitters include all the circuitry

necessary for the measurement and transmission ofan isolated 4-20 mA linear signal. Measurementrange selection is made through internal rangeswitches that are easily accessed by removing ahousing cover. No further disassembly is required. Amatrix is provided which conveniently indicates theproper switch position. Range selection can be madewithout the use of the instruction manual. Fine calibra-tion of the 4-20 mA signal is accomplished with the20-turn external Zero and Span potentiometers.The electronic printed circuits are protected from the

environment by the NEMA 4X weatherproof, corrosionresistant enclosure. The printed circuit cards plug into amoisture barrier which is isolated from the field wiringand calibration terminals. Routine field calibration doesnot require exposing the electronics to harsh industrialenvironments. All PCBs are conformal coated for maxi-mum protection. The PCBs are removed as a unit andmay be individually replaced. The transmitter housingcovers are sealed with large cross sectional O-ringsand need not be replaced each time the cover isremoved.

The Model 1181 is available with or without an analog ordigital display. The digital display may be calibrated inengineering units and the analog display features multi-ple scales in engineering units.The transmitters are certified explosion-proof, NEMA 7B,

and intrinsically safe when installed with an approved bar-rier and sensor. Hazardous area certificates are providedby BASEEFA to CENELEC regulations, FM, CSA, SAA,SEV, and TUV. CSA has determined that the moisture bar-rier qualifies as Factory Sealed which means ExplosionProof Y fittings and sealing compound are not required forinstallation when this approval is selected.Accessory items are available for the two-wire transmit-

ters. The Model 515 Isolated Power Supply provides powerfor up to 20 transmitters. Two transmitters may be wireddirectly to the power supply. For more than two transmit-ters, junction boxes are available, each accommodatingwiring for a maximum of ten transmitters. Remote alarmsare available with independently adjustable set points andhysteresis. Contacts of the Model 230A may be specifiedfor high/low, high/high, or low/low operation. Theimpedance of the Model 230A Alarm Module is less than100 ohms. For further information on the Models 515 and230A, please refer to to their respective product datasheet.

FIGURE 1-1. Mounting and Dimensional Drawing

HANDLEDO NOT

REMOVE

COVER REMOVED FORCLARITY BOTH ENDS

HANDLEDO NOT

REMOVE

CIRCUITEND

ZERO &SPAN

SERIAL TAG

CIRCUITEND

1094.3

1014.0

1014.0

1716.7

ZERO &SPAN

SERIALTAG

1/2 FNPTCONDUIT

CONNECTIONBOTH SIDES

1/2 FNPT CONDUITCONNECTION

BOTH SIDES

0-RING

TERMINALEND

METER OR LCD END

LCDCOVER REMOVEDFOR CLARITYBOTH ENDS


FIGURE 1-2. Temperature Slope Adjust(10,000 Range Multiplier)

1.2 PHYSICAL SPECIFICATIONS GENERALEnclosure: NEMA 4X, weatherproof and corrosion-

resistantNEMA 7B, explosion proof

Hazardous Area Classification:Explosion Proof:

FM: Class I, Groups B, C, & D, Div. 1Class II, Groups E, F, & G, Div. 1Class III, Div. 1

CSA:Class I, Groups C & D, Div. 1Class II, Groups E, F, & G, Div. 1Class III, Factory Sealed, Div. 1Class I, Groups A, B, C, & D, Div. 2Enclosure: Type 4

Intrinsic Safety:FM: Class I, II, & III, Div. 1CSA: Class I, Groups A, B, C, & D, Encl 4, Class 1,

Div. 1Temperature Code T4

BASEEFA: EEx ia IIB T4, TAMB = 55CDisplay:

Blind: (Code 02)Analog: plug in, 90 degree, 2.5 inch diameter

1181C: single scale, 0-100%1181T: single scale, 0-100%

Digital: 3.5 digit, LCD, adjustable range in engi-neering units

Recommended Cable: Transmitter to Power SupplyTwo Wire, 18 AWG, shielded, Belden 8760 or equal(Rosemount Analytical P/N 9200001)

Weight/Shipping Weight:1181C, T:

Blind: 1.8 kg/2.25 kg (4.0 lb/5.0 lb)Analog/Digital: 2.48 kg/2.93 kg (5.5 lb/6.5 lb)

1.3 INSTRUMENT SPECIFICATIONS GENERALPower Supply Requirements: (See Load/Supply

Chart)Lift Off Voltage: Blind & Analog: 10 VDC

Digital: 12.5 VDCMaximum Operating Power: 40 milliwattsOutput: Blind & Analog: Isolated 4-20 mA into 700

ohms at 24 VDCDigital: Isolated 4-20 mA into 575 ohms at 24 VDC

Input/Output Isolation: 600 VoltsAmbient Temperature: 25 to 70CRelative Humidity: 0-99%Digital Display Accuracy: 0.1% reading 1.0 countAnalog Display Accuracy: 2.0%External Zero: 7.0% full scale (25% for 1181T)External Span: 7.0% full scale (50% for 1181T)Shock: 10G maximum for 10 millisecondsVibration: 0.025 inches double amplitude 5 to 50 Hz

for 2 hoursEMI/RFI:

EN50081-1EN50082-2

MAXIMUM OPERATING TEMPERATUREMODEL 1181C ONLY

For X10,000 Range Multiplier Only


INSTRUMENT SPECIFICATIONS @ 25CMeasurement Range: 0-80 S/cm minimum

0-1000 mS/cm maximumInternal Range Select: Multipliers X500, X1000,

X10,000 with jumper selectable span X1 & X10and internal span adjust

Accuracy: 0.5% full scaleStability: 1% per yearRepeatability: 0.1% full scaleTemperature Coefficient: .05% of F.S. /CTemperature Slope Adjust: 0-4%/CAutomatic Temperature Compensation: 0-200C

RECOMMENDED TOROIDAL SENSORS:FULL SCALE

Minimum MaximumModel 222 0-500 S/cm 0-1000 mS/cmModel 225 0-250 S/cm 0-1000 mS/cmModel 226 0-80 S/cm 0-160 mS/cmModel 228 0-250 S/cm 0-1000 mS/cm

X0.5 C/F* 5 10 25 50 100 250X100 X1.0 1.0 10 20 50 100 200 500

X2.0 2.0 20 40 100 200 400 1,000X0.5 5.0 50 100 250 500 1,000 2,500

X1,000 X1.0 10.0 100 200 500 1,000 2,500 5,000X2.0 20.0 200 400 1,000 2,000 4,000 10,000X0.5 50 500 1,000 2,500 5,000 10,000 25,000

X10,000 X1.0 100 1,000 2,000 5,000 10,000 20,000 50,000X2.0 200 2,000 4,000 10,000 20,000 40,000 100,000

CELL CONSTANT0.01 0.1 0.2 0.5 1.0 2.0 5.0

FULL SCALE MICROSIEMENS/CM*C/F - Consult Factory

RA

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E FA

CTO

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MODEL 1181C

The Model 1181T Toroidal Transmitter measures con-ductivity over the range of 0-80 S/cm to 0-1000mS/cm. The Model 1181T uses an inductive principalof measurement and employs the use of toroidal orelectrodeless conductivity sensors. Toroidal conductivi-ty sensors have no exposed electrodes to the mea-sured solution, which practically eliminates routinesensor maintenance in applications where electrodefouling may occur. The Model 1181T also features theunique 0-4% temperature slope adjustment found onthe Model 1181C Conductivity Transmitter.

The Model 1181C Transmitter measures conductivityover the range of 0-1.0 S/cm to 100,000 S/cm fullscale. A unique feature of the Model 1181C is the 0-4% temperature slope adjustment which providesgreater accuracy in chemical concentration control.The 0-4% temperature slope adjustment eliminatesthe need for special temperature compensation cir-cuits required for the calibration to a specific acid,base, or salt over a specific operating temperaturerange.

INSTRUMENT SPECIFICATIONS @ 25CMeasurement Range: 0-1.0 S/cm minimum*

100,000 S/cm maximumInternal Range Select: Multipliers X100, X1000,

X10,000,Range Factors X0.5, X1.0, X2.0

Accuracy: 1.0% full scale5.0% full scale on X20K range

Stability: 1.0%/month, non-cumulativeRepeatability: 0.5% full scaleTemperature Coefficient: 0.1%/CAutomatic Temperature Compensation: 5-85C

50-150C100-200C

Temperature Slope Adjust: 0-4%/CMaximum Operating Temperature of Sensor:

Slope X10,000 X2.0 Factor1.0% 125C 75C2.0% 75C 50C3.0% 58C 42C4.0% 50C 38C

RECOMMENDED SENSORS:Model 140 Conductivity Model 150 Insertion/Submersion

Conductivity Model 400 series Conductivity

* Not applicable for conductivity less than 10 S/cm. SeeModels 3081C/81C or 1054BLC product data sheets forthese applications.


1.4 ORDERING INFORMATIONThe Model 1181C Two-Wire Transmitter is housed in a corrosion-resistant, NEMA 7B explosion-proof, 4Xweatherproof, corrosion resistant enclosure and includes all circuitry necessary for measurement andtransmission of an isolated 4-20 mA signal. The transmitter may be selected with or without an analog or digitaldisplay, or as a blind unit.

MODEL1181C TWO-WIRE TRANSMITTER

1181C 01 10 11 67

CODE DISPLAY (Must select one)

01 FM and CSA approved analog indication, 0-100% (6.5 lb)

02 Blind, no indication (5.0 lb)

03 FM and CENELEC approved analog indication 0-100% (6.5 lb)

06 FM, CSA, & CENELEC approved digital indication, 0-100% (6.5 lb)

CODE OPTIONS

07 ORDER AS P/N 2002577 2 in. pipe/wall mounting bracket (1lb/.5kg)

11 ORDER AS P/N 9240591 Stainless steel nameplate (specify marking)

CODE AGENCY APPROVALS (Not available with digital display)

67 FM approved, intrinsically safe (approved safety barrier required), and explosion-proof.

69 CSA approved, intrinsically safe (approved safety barrier required), and explosion-proof.

73 CENELEC approved, intrinsically safe (approved safety barrier required), and explosion-proof.

CODE TEMPERATURE COMPENSATION (Must select one)

08 Automatic T.C. range, 50C-150C

09 Automatic T.C. range, 100C-200C (requires high temp. T.C. element in sensor)

10 Automatic T.C. range, 5C-85C

NOTE: Recommended cable from +24 volt DC power supply to Model 1181 is Belden P/N 8760 available from Irvine as P/N9200001 (bare); Specify length.

Former Options

DIGITAL DISPLAYLOAD/POWER SUPPLY REQUIREMENTS

+45 VDC @ 600 OHMS MIN. 1750 OHMS MAX.

12.5 VDC 24 VDC 35.5 VDC @ ZERO LOAD 45 VDCLIFT OFF NOMINAL MAXIMUM

POWER SUPPLY VOLTAGE

1750 OHMS@ 45 VDC

600 OHMS@ 45 VDC

LOADRESISTANCEREQUIRED

1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0

OPERATINGREGION

BLIND & ANALOG DISPLAYLOAD/POWER SUPPLY REQUIREMENTS

+45 VDC @ 600 OHMS MIN. 1750 OHMS MAX.

10 VDC 24 VDC 33 VDC @ ZERO LOAD 45 VDCLIFT OFF NOMINAL MAXIMUM

POWER SUPPLY VOLTAGE

1750 OHMS@ 45 VDC

600 OHMS@ 45 VDC

LOADRESISTANCEREQUIRED

1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0

OPERATINGREGION

5Model 1181 C SECTION 2.0INSTALLATION

SECTION 2.0INSTALLATION

2.1 GENERAL. The transmitter may be installed inharsh environmental locations. The transmittershould, however, be located to minimize the effects oftemperature gradients and temperature fluctuations,and to avoid vibration and shock.

2.2 MECHANICAL INSTALLATION. Two threadedmounting holes are located in the bottom of thetransmitter housing.These holes are provided formounting to a flat surface or for attaching thetransmitter to the pipe mounting bracket (see Figure 2-1).

NOTEIf the transmitter is mounted in a verticalposition, the sensor leads should comeinto the top of the housing and the powerleads should come into the bottom of thehousing.

2.3 ELECTRICAL INSTALLATION. The transmitterhas -inch conduit openings, one on each side of thehousing. One opening is for the power signal wiring,and the other is for the input wiring from the sensor.

NOTEOn models with analog indication, makesure the meter wiring is securely connectedafter the signal input wiring have beenattached.

2.3.1 Sensor input wiring terminals are located on theside of the housing designated TERM SIDE on the seriallabel, and are the lower set of terminals (TB2). Removethe end cap from the TERM SIDE of the housing to gainaccess to the terminals (see Figure 2-2).

2.3.2 Conduit connections on the transmitter housingshould be sealed or plugged (using a sealing com-pound) to avoid accumulation of moisture in thehousing. If the connections are not sealed, thetransmitter should be mounted with the electricalhousing downward for draining.

2.3.3 The transmitter case shall be grounded. Powersupply regulation is not critical. Even with a powersupply ripple of one volt peak-to-peak, the ripple inthe output signal would be negligible.

NOTEFor best EMI/RFI protection, the powersupply/signal cable should be shieldedand enclosed in an earth grounded rigidmetal conduit. Connect the cable shield tothe transmitters grounding terminal nearTB1 (see Figure 2-2).

The sensor cable should also be shielded.This shield should be grounded to thetransmitters grounding terminal orgrounded to the transmitters enclosurevia an appropriate metal cablegland/grounding fitting.

1/2-14 FNPT(2 PLACES) 1/4-20 THREAD

1/4-20 SCREW *

1/2 TO 2 PIPE(CUSTOMERFURNISHED)

U-BOLT

* Screws furnished with mounting kit only.not furnished with analyzer/transmitter

BOTTOMVIEW

5/16-18 NUT

5/16-18WASHER

FIGURE 2-1. Transmitter Mounting Details


2.4 HAZARDOUS LOCATIONS-EXPLOSION-PROOF INSTALLATIONS. In order to maintain theexplosion proof rating for the installed transmitter, thefollowing conditions must be met:

1. The transmitter enclosure covers must be on handtight and the threads must not be damaged.

NOTEThese covers seat on o-rings which serve toprovide a dust proof enclosure for Class IIand Class III installations.

2. Explosion proof "Y" fittings must be properlyinstalled and plugged with a sealing compound toprevent explosive gases from entering thetransmitter. CSA has determined that the transmitterhousing is "Factory Sealed". Installation of "Y" fittingsand the use of sealing compound is not required forCSA approved Explosion Proof installations.

NOTEDo not install sealing compound until all fieldwiring is complete.

CAUTIONSealing compound must be installed prior toapplying power to the transmitter.

3. If one of the conduit connections on the housing isnot used, it must be closed with a threaded metalplug with at least five threads engaged.

4. The serial tag cover on the external ZERO andSPAN adjustments must be in place.

5. Explosion proof installation must be in accordancewith drawing number 1400155 (see Figure 2-10).

6. Due to the nature of the measurement, sensorscannot be designed to meet explosion proofcertification. If the sensors must be installed inhazardous area locations, Rosemount AnalyticalInc. recommends that an intrinsically safe systembe installed.

2.5 HAZARDOUS LOCATIONS-INTRINSICALLYSAFE INSTALLATIONS. To secure and maintainintrinsically safe installation for the appropriate approvalagency, the following conditions must be met:

1. Code 73 must be specified when orderingCENELEC/BASEEFA units. Installation must beperformed in accordance with Drawing Number1400143 (see Figure 2-3, Figure 2-4, & Figure 2-5).

2. Code 69 must be specified when ordering CSA(Canadian Standards Association) units. Install-ation must be performed in accordance withDrawing Number 1400125 (see Figure 2-6).

3. Code 67 must be specified when ordering F.M.(Factory Mutual) units. Approved EntityInstallation must be accordance with DrawingNumber 1400153 (see Figure 2-7, Figure 2-8 andFigure 2-9). Approved Loop installation must bein accordance with Drawing Number 1400128(see Figure 2-11, Figure 2-12, and Figure 2-13).

Power ConnectionsTB1-1 Loop signal (PowerSupply + Vdc)TB1-2 Meter (+) Red TB1-3 Meter (-) Black & Loopsignal (4-20 mA output)

Sensor Wiring for pre-existingModel 150, 112, 113,and 160 sensors

Sensor Wiring for Models 140, 141, 142 with pre-existing typecable (P/N 9200104)

Sensor-HeadJunction Box Wiring

Wire Functions

Wiring for 140*, 141, 142, 150, and 400 series Sensors

NOTE: When using extension cableP/N 9200275 or P/N 23747-00, trimwhite/red wire and shield for gray wireat both ends. These wires have beendeleted for sensors with integral cable.

NOTE: Terminals in junction box are not numbered.

* Old Model 140 series sensors maynot match the figure.

EXTENSIONCABLE

(PN 9200275OR 23747-00)

FIGURE 2-2. Transmitter Wiring Detail


FIGURE 2-3. CENELEC Intrinsically Safe Installation (1 of 3)

DWG. NO. REV.

1400143 C

8FIGURE 2-4. CENELEC Intrinsically Safe Installation (2 of 3)

Model 1181 C SECTION 2.0INSTALLATION

DWG. NO. REV.

1400143 C

9FIGURE 2-5. CENELEC Intrinsically Safe Installation (3 of 3)


DWG. NO. REV.

1400143 C

10

FIGURE 2-6. CENELEC Intrinsically Safe Installation, CSA


DWG. NO. REV.

1400125 G

11

FIGURE 2-7. FM Intrinsically Safe Installation, Factory Mutual (FMRC) Installation (1 of 3)


DWG. NO. REV.

1400153 D

12

FIGURE 2-8. FM Intrinsically Safe Installation (2 of 3)


DWG. NO. REV.

1400153 D

13

FIGURE 2-9. FM Intrinsically Safe Installation (3 of 3)


DWG. NO. REV.

1400153 D

14

FIGURE 2-10. Explosion-Proof Installation


DWG. NO. REV.

1400155 C

15

FIGURE 2-11. FM Intrinsically Safe Loop Installation (1 of 3)


DWG. NO. REV.

1400128 M

16



DWG. NO. REV.

1400128 M

17



DWG. NO. REV.

1400128 M

18

Model 1181 C SECTION 3.0START-UP AND CALIBRATION

SECTION 3.0START-UP AND CALIBRATION

3.1 START-UP. The following start-up procedureshall be performed after the transmitter has beeninstalled as described in Section 2.0. The sensormust be wired, however, it may be practical to installthe sensor after calibration is complete (refer toSection 3.2). See Figure 3-1 for location of controlsand switches.

3.2 INSITU CALIBRATION BY GRAB SAMPLEANALYSIS. This is the preferred method ofcalibrating the Model 1181C Transmitter.

1. Install an ammeter capable of indicating 4-20mAdc between TB1-2 (+) and TB1-3 (). If Code01 or 03 has been specified, remove the meterleads from TB1 (see Figure 2-2).

2. Set the RANGE MULTIPLIER and RANGEFACTOR switches. Find the sensor probeconstant in the left hand column of Table 3-1 andfollow this row to the desired full scale conduc-tivity column. On top of this column are thedesired RANGE FACTOR SWITCH and RANGEMULTIPLIER SWITCH settings. Set the Model1181C Transmitter switches to these settings(see Figure 3-1).

EXAMPLE:With a sensor probe constant of 1.0 and a desired fullscale conductivity of 2000 S/cm, the RANGEFACTOR SWITCH setting = X 2 and the RANGEMULTIPLIER SWITCH setting = X 1,000.

3. With the conductivity sensor in the air (not insolution), and the power applied to thetransmitter, adjust the external ZERO (R23) to 4mA (0% analog meter indication). If the sensorhas been installed and is in solution, disconnectthe probe drive lead (white) from TB2-4. Adjustthe external ZERO for a 4 mA indication.Interconnecting sensor cables of 100 feet or lowconductivity measurement ranges require eitherremoval of the sensor from the process (in air), orthe probe drive lead (white) disconnected fromthe sensor. After completing this adjustment,reconnect the probe drive lead (white) to TB2-4.

4. If the process temperature is not expected tovary more than 5 to 10C, set the temperatureSLOPE ADJUST (R124) at 2%/ C (average). Ifthe process varies more than 10 C, follow theTWO POINT CALIBRATION procedure (seeSection 3.4).

TABLE 3-1.SWITCH SETTINGS / PROBE CONSTANT vs. FULL SCALE CONDUCTIVITY

RANGE MULTIPLIER SWITCHx100 x1,000 x10,000

RANGE FACTOR SWITCHProbe

Constant x.5 x1 x2 x.5 x1 x2 x.5 x1 x2

MICROMHOS (FULL SCALE)0.01 0.5 1 2 5 10 20 50 100 2000.1 5 10 20 50 100 200 500 1000 20000.2 10 20 40 100 200 400 1000 2000 40000.5 25 50 100 250 500 1000 2500 5000 100001.0 50 100 200 500 1000 2000 5000 10000 200002.0 100 200 400 1000 2000 4000 10000 20000 400005.0 250 500 1000 2500 5000 10000 25000 50000 100000

10.0 500 1000 2000 5000 10000 20000 50000 100000 20000020.0 1000 2000 4000 10000 20000 40000 100000 200000 400000

19


FIGURE 3-1. Controls and Switches Location Diagram

20


5. Give the Model 1181C Transmitter a measure-ment input as follows:

a. With the sensor installed in the process andin service, record the ammeter indication asseen at the transmitter.

b. Obtain a grab sample and let it cool toambient temperature.

c. Measure the conductivity of the grab samplewith a calibrated and temperature compen-sated conductivity analyzer.

6. Adjust the external SPAN (R29) to mid position(20-turn potentiometer).

7. Adjust the internal COARSE SPAN ADJUST(R125) until the transmitter mA output agrees withthe measured value of the grab sample.

Conductivity SmA output = (______________)x 16+4Conductivity F.S.Where: Conductivity S is the conductivity of the grabsample and Conductivity F.S. is the ful l scalesensitivity of the transmitter.

EXAMPLE: If the measured range or full scalesensitivity of the transmitter is 0-2000 S/cm, and thevalue of the conductivity solution is known to be 1800S/cm, then:

1800mA output = (_____)x 16+4 = 18.4 mA2000

NOTEOn initial start-up, or if a new sensor isinstalled, fol low steps 6,7 and 8 forcalibration adjustments. Any furthercalibration required with the same sensoris done with external SPAN (R29) only.

8. Adjust external SPAN (R29-standardize) for finetuning of the current output. If the indicatedconductivity has changed between the time theinitial conductivity measurement was recordedand the grab sample was taken, the correctconductivity may be determined as follows:

a. Multiply the present indication by the ratio ofthe initial conductivity indication to thelaboratory conductivity indication.

b. This is represented by the following formula:

CLCT = C2___ C1

Where: CT = Adjust SPAN to this value (true conductivity)

CL = Conductivity determined by laboratoryanalysis

C1 = Conductivity reading of grab sample when taken

C2 = Conductivity reading just prior toadjusting SPAN

3.3 CALIBRATION USING A CONDUCTIVITYSTANDARD OR PROCESS GRAB SAMPLE

1. Perform steps 1,2,3 and 4 as explained inSection 3.2.

2. Place the Sensor in a container filled with aConductivity Standard or Process Sample.

NOTEAll sides of the sensor should be at leastone sensor diameter from the walls of thesample container. Insure no air bubblesare trapped at the sensor tip.

3. Perform steps 6 and 7 in Section 3.2.

4. Adjust external SPAN (R29 Standardize) for finetuning of the current output.

3.4 TWO POINT CALIBRATION. If the processtemperature is expected to vary more than 10 C,adjust the SLOPE ADJUSTMENT as follows:

1. Place the sensor in a beaker of process grabsample.

NOTEAll sides of the sensor should be at leastone sensor diameter from the walls of thesample container. Insure no air bubblesare trapped at the sensor tip.

2. Elevate the process grab sample temperature50 to 75 C.

3. Allow the temperature to stabilize. Note thetransmitter mA output.

4. Cool the process grab sample beaker to roomtemperature by using a room temperature bath.

5. Allow the temperature to stabilize. Set the SLOPEADJUSTMENT (R124) so the mA output is thesame as it was at the elevated temperature (seestep 3 above).

NOTETypical Slope Values are as follows:

Acids: 1.0-1.6% / C Salts: 2.2-3.0% / CBases: 1.8-2.2% / C Neutral: 2.0% / C

6. Perform steps 5 through 8 in Section 3.2 aboveto complete the calibration.

21


FIGURE 3-2. Electronic Bench Check Set-Up

3.5 ELECTRONIC BENCH CHECK

1. Set up the 1181C Transmitter as shown inFigure 3-2.

NOTEEach resistance box and the transmittermust be grounded to TB2-2 as shown inFigure 3-2.

2. Select and set the RANGE MULTIPLIER andRANGE FACTOR switch settings by performingstep 2 of Section 3.2.

3. Set the SLOPE ADJUST (R124) to 2% (seeFigure 3-1). Set the Temperature and theConductivity Decade Resistance Boxes accordingto the appropriate equation listed below:

1181CTemp.Module RTEMP. RCOND5-85C 1OK Rcond. = Probe Constant X 1,000,000

F.S. Conductivity

50-150 C 817 Rcond. = 0.4 X Probe Constant X 1,000,000F.S. Conductivity

100-200 C 1K Rcond. = 0.3 X Probe Constant X 1,000,000F.S. Conductivity

NOTEFull scale conductivity is in microsiemens.

4. Adjust COARSE SPAN ADJUST (R125) for atransmitter output of 20.00 mA.

5. Multiply Rcond. by two and adjust theCONDUCTIVITY DECADE RESISTANCE BOX tothis value. The 1181C Transmitter output shouldbe 12.00mA 0.16mA (0.32 mA @ X 10,000RANGE MULTIPLIER).

EXAMPLE:Using a sensor with a probe constant of 1.0, a Model1181C Transmitter with Temp. Module of 5-85C anda desired full scale (F.S.) conductive range of 2000S/cm, then,

RANGE FACTOR SWITCH SETTING = X 2

RANGE MULTIPLIER SWITCH SETTING = X 1000

Rtemp. resistance input = 10K Rcond.(Full Scale) resistance input = 500 Rcond. X2 (50% Full Scale) resistance input =1000

22


3.6 START-UP: LCD. The LCD (liquid crystal display)is factory set for 000.0 reading at 4 mA to 100.0% at20 mA. If this range is sufficient for the intendedapplication, no further adjustment to the display isnecessary. The standard procedures included in thismanual should be followed for proper instrumentstart-up and calibration.

If a range other than the factory set range, or testingof the LCD module are required, observe thefollowing procedures. They are divided into two parts:Testing the LCD module by itself (Section 3.7), andTesting the LCD module as an integral part of the1181 instrument (Section 3.8).

3.7 LCD: MODULE ONLY. The object of the proce-dure is to test and/or calibrate the LCD module for arange other than the factory set range of 0-100%.

3.7.1 Testing Equipment (see Figure 3-3). A. DC power supply (Hewlett Packard 5217A or

equivalent) P1

B. Digital DC current meter (Fluke 8050A orequivalent) M1

C. 2.5K, .25W +5% resistor (RL)

3.7.2 Set-Up. The LCD module under test isconnected in series with an adjustable DC powersupply P1, a 2.5K ohm, 0.25 W, 5% resistor and adigital current meter M1 (see Figure 3-3).

3.7.3 Calibration

1. Adjust the voltage output of P1 so that thecurrent meter M1 reads 4.000 mA. Then, adjustZero pot (R8) on the LCD module until it displays000 (see Figure 3-4).

2. Refer to Table 3-2. Determine the requirementsand corresponding parameters for thisapplication.

3. Adjust power supply P1 so that the current meterM1 reads 20.000 mA. Adjust the Span pot (R4) ofthe LCD module until it displays the total spanof this application (see Table 3-2).

4. Reduce power supply P1 until meter M1 reads4.00 mA. Confirm that the LCD module stilldisplays 000. If not, readjust the LCD modulefollowing steps 1 through 4.

5. According to the Decimal Point Setting columnof Table 3-2, set switch S1 for this application(see Figure 3-4).

6. Refer to Table 3-2. Adjust the Zero pot (R8) forthe desired reading at 4 mA. Adjust the powersupply P1 for an output of 20.00 mA and confirmthat the reading coincides with the value inTable 3-2. If it does not, then readjust the LCDmodule following Steps 1 through 6.

7. Adjust P1 to read 12.000 mA. The LCD moduleshould display the reading at 12 mA (seeTable 3-2).

FIGURE 3-3. LCD Module Set-Up Wiring

D.C. POWERSUPPLY P10-60V +

LOAD2.5K RL.25W, 5%

0-20mA(Digital)

+ M1

LCD

1181

Module

CURRENT METER

23


8. Example of illustrating the test procedure fromsteps 1 through 8.

EXAMPLE 1: Application Requirements:

Conductivity with range from 0 S to500 S

TEST PROCEDURE:

1. Set the input current (the reading on M1) to 4.000mA. Adjust R8 until the LCD module reads 000.

2. Set the input current to 20.000 mA. Adjust R4 untilthe LCD module reads 500.

3. Set the input current back to 4.000 mA. Confirmthat the LCD module still displays 000.

3.8 LCD: WITH 1181 C

NOTEIf you are retrofitting an LCD to an existing1181, refer to Figure 3-6 and Figure 3-7before starting the test procedure toassure that the transmitter PCB is modifiedproperly.

3.8.1 Test EquipmentA. D.C. power supply capable of 30V at 50 mA

(Hewlett Packard 6216A or Model 515 orequivalent).

B. D.C. voltmeter (Fluke 8050A or equivalent).

C. Two resistor decade boxes or 1181C test fixture.

3.8.2 Set Up. The 1181C with LCD RTO (refer tooutput) installed is connected to the power supplyand decade resistance boxes (see Figure 3-5).

3.8.3 Calibration Be certain that the 1181C has beencalibrated as described in this manual.

1. Turn on power supply and adjust to 24 .5V andobserve that display is functioning. Turn on No. 3of S1 (see Figure 3-4).

2. Set temperature slope pot for 0% and theTemperature Resistance Decade Box for 10K.Use standard temperature range module (5C to85C) in 1181 C.

3. Using Table of Equivalent Resistances (Table 3-3),set the 1181C Range Multiplier and Range Factorswitches to the desired conductivity range. SetConductivity Resistance Decade Box for thecorresponding value in Table 3-3 of 10% F.S.and adjust the Zero pots on the 1181 C and theLCD display for 3.37 .096V on M1 and 10.0digit on the display.

Since the unit cannot display numbers more than + 1999 (or + 1.999m + 19.99, + 199.9), instead it will display + 1 followed by three blankdigits to indicate the situation of overflow when the input exceeds the upper limit of the range. Therefore, if you wish the unit to read +2000 (or + 2.000, + 20.00, + 200.0), you may adjust the unit so that the display barely overflows.

REQUIREMENTS CORRESPONDING PARAMETERSReading Reading Reading Decimal Point

Application Range at 4 mA at 12 mA at 20 mA Total Span SettingCond. 0-1 S +0.000 +0.500 0.02 +1.000 1000 counts Turn on No. 1 of S1Cond. 0-100 S +00.0 +50.0 0.02 +100.0 1000 counts Turn on No. 3 of S1Cond. 0-1000 S +000 +500 0.02 +1000 1000 counts All Off at S-1Cond. 0-10,000 S +0.00 +5.00 0.02 +10.00 1000 counts Turn on No. 2 of S1

TABLE 3-2. Requirements/Corresponding Parameters

24


FIGURE 3-4. LCD Calibration

4. Now using the 100% F.S. value for the conduc-tivity decade resistor, set the Span pots on the1181 C and LCD display for 12.0 .096V on M1and 100.0 1 digit on the display.

5. Set conductivity resistor for 50% F.S. andobserve that the M1 display reads 7.2 .096Vand LCD display reads 50.0 1 digit*.

6. If standard temperature range (5C to 85C) isselected, this concludes the test. If highertemperature is used, proceed with followingprocedures.

7. 50 TO 150C RANGE CONDUCTIVITY:Set the 1181C for 1000 umho full scale range(see Table 3-3). Set slope for 2%, and set theConductivity Resistance Decade Box for 556and Temperature Resistance Decade Box for

2339 . Unit should read 10% full scale. Setslope for 4%, set Conductivity ResistanceDecade Box to 179 and TemperatureResistance Decade Box to 297 . The unit shouldread 10% of full scale output display.

8. 100 TO 200C RANGE CONDUCTIVITY:Set the 1181C for 1000 umho full scale range(see Table 3-3). Set slope for 2% and, setConductivity Resistance Decade Box to 370and Temperature Resistance Decade Box to3291 . Unit should read 10% of full scale. Setslope for 4% and, set Conductivity ResistanceDecade Box to 139 and set TemperatureResistance Decade Box to 470 . The outputshould read 10% of full scale display.

*On higher conductivity ranges, 2% error is allowed.

25


FIGURE 3-5. LCD Unit Test Wiring

1181C 1181CRange Range Multiplier Range Factor 100% F.S. 50% F.S. 10% F.S.

(S f.s.) Switch S1 Switch S2 ohms ohms ohms50 x 100 x .5 20K 40K 200K

100 x 100 x 1 10K 20K 100K

200 x 100 x 2 5K 10K 50K

500 x 1000 x .5 2K 4K 20K

1000 x 1000 x 1 1K 2K 10K

2000 x 1000 x 2 500 1K 5K

5000 x 10,000 x .5 200 400 2K

10000 x 10,000 x 1 100 200 1K

20000 x 10,000 x 2 50 100 500

TABLE 3-3.Table of Equivalent Resistances

26

FIGURE 3-6. Transmitter Board


If you are retrofitting a LCD to an existing 1181, you must assure that the instrument transmitter board isproperly modified. There are two versions possible. If you have a P/N 22795-02 PCB, you simply move thejumper from the W5 position to the W6 position (or omit it entirely). If your PCB is P/N 22795-01, you must clipand remove the diode CR11. Refer to Figure 3-6 and Figure 3-7.

PART NO.

22795-02 AND03 DIGITAL

27

FIGURE 3-7. Transmitter Board


PART NO.

22795-01

28

4.1 GENERAL. This section provides a simplifiedtheory of operation for the transmitter and alsoincludes a flow diagram of the electronic circuitry(see Figure 4-1).

4.2 LIFT-OFF VOLTAGE. The transmitter lifts offapproximately 10 volts from the loop current to powerthe electronics. The voltage dropped across VR1provides for the system voltage. Upon start-up, avoltage potential must be established across VR1 topower the power supply (P.S.) module. To establishthis voltage, a starting current is generated bycurrent diode CR1 (Q1 and Q2 are off during start-up). Once the power supply module is started, poweris provided for ARl and then Q1 and Q2 are switchedon to regulate the current loop current.

4.3 POWER SUPPLY MODULE. The power supplymodule on the loop-side switches at 10K Hz toprovide 5 volts power for the sensor-side powersupply module, and -5 volts power for the loop-sidemodule. The power supply module also providemodulator and demodulator chopping signals. Onthe sensor-side, the 10K Hz is divided down toprovide a 625 Hz square wave signal for the driveramplifier and the range factory attenuator. The driveramplifier, in turn, powers one electrode (of the sensorprobe) while the other electrode measures thecurrent as a result of the conductivity of the solution.This current is then peak detected and scaled tomatch the internal range multiplier switch. Thisscaled output is directly proportional to the absoluteconductivity of the solution at 25C.

4.4 TEMPERATURE COMPENSATION CIRCUIT.The conductivity of a solution varies with temperaturechange. Change in temperature is sensed at theconductivity cell and is automatically corrected to areference temperature of 25C. The temperatureslope varies among solutions and is manuallycompensated by the 0-4% temperature SLOPEADJUST control. If normal operation is to beexpected in the 10 to 50C range, and if theconductivity is between 0.5 micromhos and 5.0micromhos at 25C, one would expect reasonablyaccurate temperature compensation. The errorsrapidly increase to multiples of ten and greater as theconductivity at 25C drops below 0.5 micromhos andas the temperature goes below 10C or above 50C.

4.5 OUTPUT SIGNAL. After the signal is correctedfor temperature, it is then modulated across theisolation transformer and receiver by amplifier ARl,where it is generated as a current proportional to themodulated signal plus four milliamps. Diode CR2protects against reverse current flow, and CR3 andCR4 are meter diodes.

Model 1181 C SECTION 4.0THEORY OF OPERATION

SECTION 4.0THEORY OF OPERATION

29

FIGURE 4-1. Simplified Block Diagram

Model 1181 C SECTION 4.0THEORY OF OPERATION

30

Model 1181 C SECTION 5.0MAINTENANCE AND TROUBLESHOOTING

SECTION 5.0MAINTENANCE AND TROUBLESHOOTING

5.1 GENERAL. This section provides the main-tenance and troubleshooting instructions for theModel 1181C Two-Wire Transmitter. This transmitterhas no moving parts and requires a minimum ofmaintenance. Procedures for standardizing andcalibrating the transmitter are given in Section 3.0,and generally wil l be the only operation-typemaintenance required to keep the transmitter in

good operating condition. If the transmitter issuspected of having a problem, refer to the followingsection and proceed as instructed to correct theproblem.

5.2 TROUBLESHOOTING. In the event of a failure,refer to Table 5-1 to find the defective component.

Trouble Probable Cause RemedyThere is no loop current. Voltage from power supply too low Correct power supply voltage by

or is not present. installing proper load resistor (see Figure 1-2).

Loop polarity is not correct. Correct loop polarity (see Figure 2-2).

Open circuit or defective connection Repair current loop wiring orin current loop wiring. connection.Power PCB defective. Replace power PCB (Item 7,

Figure 6-1).

Transmitter PCB defective. Replace transmitter PCB (Item 6,Figure 6-1).

Indication does not respond Wiring from TB2 connected wrong, Correct wiring condition, tightento solution conductivity. connection loose or wiring defective. connections or repair defective

wiring.RANGE FACTOR or RANGE MULTI- Set RANGE FACTOR and/or RANGEPLIER switches not set for solution MULTIPLIER switches as instructedconductivity. Make sure probe con- in Section 3.2.stant is considered (refer to Table 3-1).

Loop current does not PCB connections loose or defective. Secure PCB connections by tighteningindicate to simulated screws that secure boards, or replaceconductivity (with decade PCB if connector defective.resistance box connected). Driver and/or signal conditioning Remove driver (Item 8, Figure 6-1) andRefer to Electronic Bench PCBs defective. signal conditioning (item 9, Figure 6-1)Check , Paragraph 3.5. PCB's and if indication is approximately

12 mA either/or both PCB's are defective.Replace either/or both PCB's and recheckloop current.

Power and/or transmitter PCB's Replace boards.defective.

TABLE 5-1. Troubleshooting

31


5.3 MAINTENANCE. Disassemble or reassemble theModel 1181 C as follows:

5.3.1 Disassembly Procedure. Remove the powerto the transmitter prior to disassembly. Follow thesteps below to disassemble the transmitter (refer toFigure 6-1 for item numbers).

1. Remove covers (1 and 18) or meter housing (19).If damaged, remove and discard O-rings (2) fromhousing (3).

2. Loosen screws retaining serial label to housing,and then rotate the serial label approximately 90degrees to gain access to ZERO and SPANadjustment screws (4).

3. Align the external ZERO and SPAN adjustingscrews (4) so the slots are horizontal, pointingend cap to end cap (see Figure 3-1 ).

4. In circuit side of housing (3), remove circuitboard retaining screws, washers and matrixcover (10). The matrix cover is secured to screwswith nylon split washers. Remove the screws inequal increments so the matrix cover is notdamaged.

5. Pull straight out on the signal conditioning boardassembly (9) to remove circuit boards fromhousing (3).

6. To separate individual boards, remove theretaining screw located on the terminal side ofthe transmitter board (6).

7. Remove each printed circuit board assembly bypull ing straight out from their respectiveconnectors.

5.3.2 Reassembly Procedure (see Figure 6-1).

1. Assemble the circuit board assemblies (6, 7, 8,9) by first aligning the connectors with therespective pins, and then pushing straight in.Install screw which holds circuit boardassemblies together.

2. Align the ZERO and SPAN adjusting screws (4)on the housing (3) to the horizontal position, slotspointing end cap to end cap (see Figure 3-1 ).

3. Align the ZERO (R23) and SPAN (R29)potentiometers located on the power circuitboard (7) to the horizontal position, with bladespointing to PCBs (6 and 8, see Figure 6-3).

4. Place circuit board assemblies (6, 7, 8, 9) intohousing by first aligning the connector pins withthe terminal receptacles in the base of thehousing (3) and then pushing straight in on thesignal conditioning board (9).

5. Install the matrix cover (10) and secure withscrews and washers. The matrix cover is securedto screws with nylon split washers. Install thescrews in equal increments so the matrix cover isnot damaged.

6. Inspect the thread connections on housing (3) tomake sure five undamaged threads will fullyengage for explosion proof requirements.

7. If removed, install O-rings (2) on housing (3).

8. Install the covers (1, 18) or meter housing (19) ontransmitter housing (3).

9. Apply power to the transmitter and perform theappropriate calibration procedure as instructedin Section 3.2 and Section 3.3.

5.4 TEMPERATURE MODULE REPLACEMENT. Thetemperature module (Item 11, Figure 6-1) is a plug-inassembly which can be replaced without removingthe printed circuit boards. If the need arises toreplace the temperature compensator module,proceed as follows (refer to Figure 6-1 for itemnumbers):

NOTEThe module is available in three temp-erature ranges; 5 to 85C, 50 to 150C and100 to 200C. The temperature sensingelement of the conductivity sensor mustagree with the temperature range of thetemperature module; otherwise, theindication will not be representative of thesolution being measured.

The Model 1181C must be electronically recalibrated ifthe 50-150C or 100-200C temperature module isreplaced with a 5-85C temperature module. Likewise,the Model 1181C must also be electronically recalibratedif the 5-85C temperature module is replaced with a 50-150C or 100-200C temperature module.

1. Remove or shut down power to the transmitter.

2. Remove cover (Item 18) from the circuit side ofthe transmitter.

3. Pull straight out on the old temperature module(Item 11).

4. Orient the new module with the cutcorner (pin 1)adjacent to the COARSE SPAN ADJUST poten-tiometer; and then, making sure the pins are alignedwith the socket, push the module straight in.

5. Install cover (Item 18) on the circuit side of thetransmitter, making sure the O-ring (Item 2) is notdefective, and that a minimum of five threads areengaged.

6. Restore power to the transmitter, and calibrate asdescribed in Section 3.2 or Section 3.3.

32

FIGURE 5-1. Schematic 1181CNDT, CSA (1 of 2)


DWG. NO. REV.

2400184 E

33

FIGURE 5-2. Schematic 1181CNDT, CSA (2 of 2)


DWG. NO. REV.

2400184 E

34

Model 1181 C SECTION 6.0PARTS LIST

SECTION 6.0PARTS LIST

6.1 GENERAL. The following are the parts lists and illustrations for identifying the parts and assemblies of theModel 1181C Two-Wire Transmitter.

TABLE 6-1. Replacement Parts ListItem # Part Number Description Qty.

1 3002425 Cover (for Blind Model) 12 2002604 O-Ring Kit 1

Consists of: 9550136 O-Ring 123 2002528 Housing 14 2002598 Adjustment Screw Kit 15 2002605 O-Ring Kit 1

Consists of: 9550137 O-Ring 126 22795-02 Transmitter PCB - Blind/Analog 1

22795-03 Transmitter PCB - LCD 17 22796-00 Power PCB 18 22798-01 Driver PCB 19 22789-01 Signal Conditioning PCB (w/o TC ) 1

22790-03 Signal Conditioning PCB (5-85C) 122790-04 Signal Conditioning PCB (50-150C) 122790-05 Signal Conditioning PCB (100-200C) 1

10 22804-00 Matrix Cover Kit 111 22788-00 Temperature Module Assy, 5 to 85C 1

22788-01 Temperature Module Assy, 50 to 150C 122788-02 Temperature Module Assy, 100 to 200C 1

12A 23122-00 LCD Assy, 0-100% (Code 06) 112B 9170163 Meter (Code 01 ) 1

9170167 Meter (Code 03) 113 Meter Sleeve (Code 06) 114 32955-00 Plate, Meter Mounting (Code 01/03) 115 32996-00 Insulator, Meter Screen (Code 01/03) 116 32997-00 Retainer Meter (Code 01/03) 117 32961-00 STD-OFF, Terminal (Code 01/03) 118 3002468 Cover, Tall (PCB Side) 119 23701-00 Meter Cover Kit 120 2002603 O-Ring Kit 1

Consists of: 9550135 O-Ring 1221 2002600 Window Kit 1

35

FIGURE 6-1. Model 1181C Two-Wire Transmitter


TABLE 6-2. S-Assy, Electronics

ITEMS6 7 8 9

Display Part No. Description PCB XMTR PCB PWR DRIVER SIG CND22930-00 5-85C 22790-03

LCD RTO 22930-01 50-150C 22795-03 22790-0422930-02 100-200C

22796-00 22798-0122790-05

BLIND22930-03 5-85C 22790-03

& ANALOG 22930-04 50-150C 22795-02 22790-0422930-05 100-200C 22790-05

36

FIGURE 6-2. Transmitter PCB

FIGURE 6-3. Power PCB


PART NO. REV.

22795-02 A

PART NO. REV.

22796-00 E

37

FIGURE 6-5. Signal Conditioning PCB

FIGURE 6-4. Driver PCB


PART NO. REV.

22798-01 D

PART NO. REV.

22789-01 H

38

Model 1181 C SECTION 7.0RETURN OF MATERIAL

SECTION 7.0RETURN OF MATERIAL

7.1 GENERAL. To expedite the repair and return ofinstruments, proper communication between the cus-tomer and the factory is important. A return materialauthorization (RMA) number is required. Call 1-800-654-7768 or (949) 863-1181. The "Return of MaterialsRequest" form is provided for you to copy and use incase the situation arises. The accuracy and com-pleteness of this form will affect the processing timeof your materials.

7.2 WARRANTY REPAIR. The following is the proce-dure for returning instruments still under warranty.

1. Contact the factory for authorization.

2. Complete a copy of the Return of MaterialsRequest form as completely and accurately aspossible.

3. To verify warranty, supply the factory sales ordernumber or the original purchase order number.In the case of individual parts or sub-assemblies,the serial number on the mother unit must besupplied.

4. Carefully package the materials and encloseyour Letter of Transmittal and the completedcopy of the Return of Materials Request form. Ifpossible, pack the materials in the same manneras it was received.

IMPORTANTPlease see second section of Return ofMaterials Request Form. Compliance tothe OSHA requirements is mandatory forthe safety of all personnel. MSDS formsand a certification that the instrumentshave been disinfected or detoxified arerequired.

5. Send the package prepaid to:

Rosemount Analytical Inc.Uniloc Division2400 Barranca ParkwayIrvine, CA 92606

Attn: Factory Repair

Mark the package: Returned for Repair RMA#

Model No. ____

7.3 NON WARRANTY REPAIR. Contact FactoryFor Authorization

1. Contact the factory for authorization.

2. Fill out a copy of the Return of Materials Requestform as completely and accurately as possible.

3. Include a purchase order number and make sureto include the name and telephone number ofthe right individual to be contacted shouldadditional information be needed.

4. Do Steps 4 and 5 of Section 7.2.

NOTEConsult the factory for additional infor-mation regarding service or repair.

FROM: RETURN BILL TO:_____________________________ _____________________________ __________________________________________________________ _____________________________ __________________________________________________________ _____________________________ _____________________________

CUSTOMER/USER MUST SUBMIT MATERIAL SAFETY SHEET (MSDS) OR COMPLETE STREAM COMPOSITION, AND/ORLETTER CERTIFYING THE MATERIALS HAVE BEEN DISINFECTED AND/OR DETOXIFIED WHEN RETURNING ANYPRODUCT, SAMPLE OR MATERIAL THAT HAVE BEEN EXPOSED TO OR USED IN AN ENVIRONMENT OR PROCESS THATCONTAINS A HAZARDOUS MATERIAL ANY OF THE ABOVE THAT IS SUBMITTED TO ROSEMOUNT ANALYTICALWITHOUT THE MSDS WILL BE RETURNED TO SENDER C.O.D. FOR THE SAFETY AND HEALTH OF OUR EMPLOYEES.WE THANK YOU IN ADVANCE FOR COMPLIANCE TO THIS SUBJECT.

SENSOR OR CIRCUIT BOARD ONLY:(Please reference where from in MODEL / SER. NO. Column)1. PART NO._____________________________1. MODEL ____________________________________1. SER. NO. __________________

2. PART NO._____________________________2. MODEL ____________________________________2. SER. NO. __________________



PLEASE CHECK ONE: REPAIR AND CALIBRATE DEMO EQUIPMENT NO. ______________________________ EVALUATION OTHER (EXPLAIN) ___________________________________ REPLACEMENT REQUIRED? YES NO _______________________________________________________DESCRIPTION OF MALFUNCTION:

__________________________________________________________________________________________________________________

__________________________________________________________________________________________________________________

__________________________________________________________________________________________________________________

WARRANTY REPAIR REQUESTED:

YES-REFERENCE ORIGINAL ROSEMOUNT ANALYTICAL ORDER NO. _______________________________________________

CUSTOMER PURCHASE ORDER NO. ________________________________________________________

NO-PROCEED WITH REPAIRS-INVOICE AGAINST P.O. NO. ________________________________________________________

NO-CONTACT WITH ESTIMATE OF REPAIR CHARGES: LETTER _________________________________________________

PHONE ________________________________________________

NAME___________________________________________________________ PHONE______________________________________________

ADDRESS_______________________________________________________________________________________________________________

_____________________________________________________________________ ZIP______________________________________________

RETURN AUTHORITY FOR CREDIT ADJUSTMENT [Please check appropriate box(s)] WRONG PART RECEIVED REPLACEMENT RECEIVED DUPLICATE SHIPMENT REFERENCE ROSEMOUNT ANALYTICAL SALES ORDER NO. _____________ RETURN FOR CREDIT RETURN AUTHORIZED BY: __________________________________________WARRANTY DEFECT ______________________________________________________________________________________________

_________________________________________________________________________________________________________________24-6047

RETURN OF MATERIALS REQUEST IMPORTANT!This form must be completed to ensure expedient factory service.

REPAIR

STATUS

REASON

FOR

RETURN

CUSTOMER

NOTICE

TO

SENDER

Rosemount Analytical Inc.Uniloc Division2400 Barranca ParkwayIrvine, CA 92606 USATel: 1-800-854-8257Fax: (949)-474-7250

U.S. Field ServiceField Watch Response Center1-800-654-7768

InternationalARGENTINA

Emerson ArgentinaBuenos Aires54 1 780311,

795-9338AUSTRALIA

Fisher-Rosemount Pty. Ltd.Bayswater, Victoria(61)(39)721-0200

AUSTRIAFisher-Rosemount - AGNeudorf(43)(2236)607

BELGIUMFisher-Rosemount N.V./S.A.Diegem(32)(2)716-77-11

BRAZILFisher-Rosemount do Brasil Industria e Comercio Ltda.Sorocada(55)(11)228 3788

CANADARosemount Instruments Ltd.Calgary(800) 268-1151

CHINAFisher-RosemountPudong, Shanghai(86)(215)899-4415

CROATIAFisher-Rosemount CroatiaZagreb(385)(1)305 071

CZECH REPUBLICFisher-Rosemount Praha(420)(2)81002666-7

DENMARKFisher-Rosemount A/SAlleroed(45)48-17-03-33

ENGLANDFisher-Rosemount LimitedBognor Regis(44)(1243)863-121

FINLANDOy Valment-

Rosemount AGESPOO

(358)(9)549-541FRANCE

Fisher-Rosemount S.A.Lyon(33)(7)215-98-00

GERMANYFisher-Rosemount GmbH & Co.D-63549 Hasselroth(49)(6055)884-0

HUNGARYFisher-Rosemount Budapest(36)(1)4624001

INDIAFisher-Rosemount (India) Ltd.New Bombay(91)(22)762-9191/9200

ITALYFisher-Rosemount Italia s.r.l.Milan(11)(39)(39)27021

JAPANFisher-Rosemount Japan Co., Ltd.Tokyo(81)(3)5403-8529

KOREAFisher-Rosemount Korea Ltd.Seoul(82)(2)515-2321

MIDDLE EASTFisher-Rosemount Middle-East Dubai,United Arab Emirates(971)(4)835235

MALAYSIARosemount InstrumentsSDN BHDKuala Lumpur(60)(3)244-5688

MEXICOFisher-Rosemount S.A.de C.V.Tlalnepantla(011)(525)728-0885

NEW ZEALANDFisher-RosemountAuckland(64)(9)444-1646

NORWAYFisher-Rosemount A/SPorsgrunn(47)35-55-5600

POLANDFisher-RosemountWarszawa(48)(22)857 3856/ 647 3865

PORTUGALFisher-Rosemount Portugal InstrumentosLimitadaAlfragide(351)(1)472 88 50

PUERTO RICOFisher-Rosemount Inc.Guaynabo(787)782-9955, 9956, or 9957

ROMANIAFisher-Rosemount Bucharest40 1230 4149/50/59

RUSSIAFisher-RosemountMoscow7095 245 86 86

SINGAPOREFisher-RosemountSingaporePte, Ltd(65)777-8211

SLOVAK REPUBLICFisher-Rosemount scrBratislava42 17 761 973

SPAINFisher-Rosemount

S.A. Madrid(34)(1)358-91-41

SWEDENFisher-Rosemount ABKarlstad(46)(54)19-0090

SWITZERLANDFisher-Rosemount AGBaar(41)(41)768 62 60

THE NETHERLANDSFisher-Rosemount BVRijswijk(31)(70)413-6542

TURKEYFisher-Rosemount Proses Kontrol Ltd. SriIstanbul(90)(216)49 240 42-46

A Worldwide Network of Sales and ServiceThe Rosemount customer sales and service organization comprises a network of fully equipped support centers strategicallylocated throughout the world. From many of these locations, the Rosemount Group provides support, distribution of finishedproducts, repair facilities, and training for our customers.

Immediate, Reliable Analytical Support Now theres a way to quickly get the right answers for your liquid analytical instrumentationquestions: the Analytical Customer Support Center.Our staff of trained professionals are ready to provide the information you need. If you areplacing an order, verifying delivery, requesting application information, or just want tocontact a Rosemount Analytical representative, a toll-free call to 1-800-854-8257 will provideyou with the right people, the right answers, right now.

The right people, the right answers, right now.

FOLD ALONG DOTTED LINES

DOUBLE WARRANTY REGISTRATION

Date of Purchase (of instrument) __________________________ Your Name _______________________________________Company Name _______________________________________ Title ____________________________________________Address _____________________________________________ Phone Number ___________________________________City ________________________________________________ E-Mail Address ____________________________________State/Country ___________________ Zip __________________ Fax Number ______________________________________Mail Drop __________________________________________________________________________________________________

Model number of instrument (e.g., 3081pH) _______________________________________________________________________*Serial number (located on nameplate) ________________________________________________________________________

How many liquid analyzers are purchased at this site per year? (check one)1 to 5 6 to 10 10 to 20 20 or more

What are your principal applications? _______________________________________________________________________________________________________________________________________________________________________________________

Through which of the following means do you prefer receiving product updates and application news? (check one)sales representativemailfax (my fax number is ____________________)E-mail (my e-mail address is ____________________)phone

CUSTOMER SATISFACTION SURVEYPlease let us know how satisfied you are with your new instrument.

MODEL ______________________________

How easy was it to do the following: Very Easy Somewhat Not Very Not At AllEasy Easy Easy

Unpack 1 2 3 4Wire 1 2 3 4Mount 1 2 3 4Calibrate 1 2 3 4Program 1 2 3 4Operate 1 2 3 4

How satisfied were you with the following: Very Somewhat Not Very Not At AllSatisfied Satisfied Satisfied Satisfied

The instrument manual 1 2 3 4The instruments performance 1 2 3 4

Please explain any 3s and 4s above:___________________________________________________________________________________________________________

___________________________________________________________________________________________________________

___________________________________________________________________________________________________________

Thank you, For Customer SupportMike Stoessl 24 hours a day/365 days a year, President, Rosemount Analytical-Uniloc Division Call 1-800-854-8257

Complete this registration, fold it in thirds so the return address shows, and drop it in any mailbox, or visit our websiteat www.RAuniloc.com and register on-line to double your standard warranty from 1 year to 2 years.

*Serial number must be indicated to register for extended warranty. Warranty applicable only to instrument accompanying this manual.

WARRANTYGoods and part(s) (excluding consumables) manufactured by Seller are warranted to be free from defects in

workmanship and material under normal use and service for a period of twelve (12) months from the date of shipmentby Seller. Consumables, pH electrodes, membranes, liquid junctions, electrolyte, O-rings, etc. are warranted to be freefrom defects in workmanship and material under normal use and service for a period of ninety (90) days from date ofshipment by Seller. Goods, part(s) and consumables proven by Seller to be defective in workmanship and / or materialshall be replaced or repaired, free of charge, F.O.B. Seller's factory provided that the goods, parts(s), or consumablesare returned to Seller's designated factory, transportation charges prepaid, within the twelve (12) month period ofwarranty in the case of goods and part(s), and in the case of consumables, within the ninety (90) day period ofwarranty. This warranty shall be in effect for replacement or repaired goods, part(s) and consumables for the remainingportion of the period of the twelve (12) month warranty in the case of goods and part(s) and the remaining portion of theninety (90) day warranty in the case of consumables. A defect in goods, part(s) and consumables of the commercialunit shall not operate to condemn such commercial unit when such goods, parts(s) or consumables are capable ofbeing renewed, repaired or replaced.

The Seller shall not be liable to the Buyer, or to any other person, for the loss or damage, directly or indirectly, arisingfrom the use of the equipment or goods, from breach of any warranty or from any other cause. All other warranties,expressed or implied are hereby excluded.

IN CONSIDERATION OF THE STATED PURCHASE PRICE OF THE GOODS, SELLER GRANTS ONLY THE ABOVESTATED EXPRESS WARRANTY. NO OTHER WARRANTIES ARE GRANTED INCLUDING, BUT NOT LIMITED TO,EXPRESS AND IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

RETURN OF MATERIAL

Material returned for repair, whether in or out of warranty, should be shipped prepaid to:

Rosemount Analytical Inc.Uniloc Division

2400 Barranca ParkwayIrvine, CA 92606

The shipping container should be marked:

Return for RepairModel _______________________________

The returned material should be accompanied by a letter of transmittal which should include the following information(make a copy of the "Return of Materials Request" found on the last page of the Manual and provide the followingthereon):

1. Location type of service, and length of time of service of the device.2. Description of the faulty operation of the device and the circumstances of the failure.3. Name and telephone number of the person to contact if there are questions about the returned material.4. Statement as to whether warranty or non-warranty service is requested.5. Complete shipping instructions for return of the material.

Adherence to these procedures will expedite handling of the returned material and will prevent unnecessary additionalcharges for inspection and testing to determine the problem with the device.

If the material is returned for out-of-warranty repairs, a purchase order for repairs should be enclosed.

Rosemount Analytical Inc.Uniloc Division2400 Barranca ParkwayIrvine, CA 92606 USATel: (949) 863-1181http://www.RAuniloc.com

Rosemount Analytical Inc. 1999

Credit Cards for U.S. Purchases Only.

UNILOC DIVISIONCUSTOMER SUPPORT CENTER

1-800-854-8257

The right people,the right answers,right now.

ON-LINE ORDERING NOWAVAILABLE ON OUR WEB SITEhttp://www.RAuniloc.com

Documents

Rosemount Conduct Trans 2wi 1181