of 29/29
ADMAG TI Series AXG Magnetic Flowmeter Maintenance Manual IM 01E22A01-02EN 1st Edition IM 01E22A01-02EN User’s Manual

ADMAG TI Series AXG Magnetic Flowmeter … Magnetic Flowmeter Maintenance Manual IM 01E22A01-02EN 1st Edition IM 01E22A01-02EN User’s Manual IM 01E22A01-02EN 1 ADMAG TI Series AXG

  • View
    256

  • Download
    1

Embed Size (px)

Text of ADMAG TI Series AXG Magnetic Flowmeter … Magnetic Flowmeter Maintenance Manual IM 01E22A01-02EN...

  • ADMAG TI SeriesAXG Magnetic FlowmeterMaintenance Manual

    IM 01E22A01-02EN

    1st EditionIM 01E22A01-02EN

    AXG Magnetic Flowmeter

    UsersManual

  • IM 01E22A01-02EN

    1

    ADMAG TI SeriesAXG Magnetic FlowmeterMaintenance Manual

    IM 01E22A01-02EN 1st Edition

    1st Edition: June 2017 (KP)All right Reserved Copyright 2017. Yokogawa Electric Corporation

    Contents1. Introduction ...................................................................................................2

    1.1 For Safe Use of Product ...................................................................................... 41.2 Warranty ................................................................................................................ 51.3 Regular Inspection Items .................................................................................... 5

    2. ModelandSpecificationsCheck ................................................................63. ChangingDirectionofCableEntry .............................................................74. Removing and Installing Adapters for Hygienic Types ............................85. Transmitter Maintenance (Integral Flowmeter and Remote

    Transmitter) ................................................................................................ 105.1 ChangingDirectionofDisplayUnit ................................................................. 105.2 MaintenanceoftheDisplay .............................................................................. 115.3 ChangingofDisplayBoard ............................................................................... 115.4 ParameterBackup/Restore/Duplicate ............................................................. 12

    6. HardwareSwitchSetting .......................................................................... 137. ExcitationCoilandInsulationResistanceCheck(RemoteSensor) ... 15

    7.1 RemovingorInstallingtheCover(RemoteSensor) ...................................... 157.2 ExcitationCoilCheck ........................................................................................ 157.3 InsulationResistanceCheck ............................................................................ 15

    8. DeviceHealthDiagnosisbyVerificationFunction ................................ 168.1 ParameterofVerificationFunction .................................................................. 178.2 ExecutionofVerificationFunction .................................................................. 198.3 ConfirmationofVerificationFunction ............................................................. 20

    9. Troubleshooting ........................................................................................ 219.1 No Display ........................................................................................................... 219.2 UnstableZeroPoint ........................................................................................... 239.3 DisagreementBetweenDisplayedFlowRateandActualFlowRate ........... 25

    Revision Information

  • IM 01E22A01-02EN

    2 2

    1. IntroductionThis manual provides the basic guidelines for maintenance procedures of ADMAG TI (Total Insight) Series AXG magnetic flowmeters.For the items which are not covered in this manual, read the applicable users manuals and general specifications as listed in Table 1.1. These documents can be downloaded from the website of YOKOGAWA. To ensure correct use of the instrument, read these manuals thoroughly and fully understand how to operate the instrument before operating it. For method of checking the model and specifications, read Chapter 2 and general specifications as listed in Table 1.1.Website address: http://www.yokogawa.com/fld/doc/These manuals can be downloaded from the website of YOKOGAWA or purchased from the YOKOGAWA representatives.

    Table1.1 ManualandGeneralSpecificationsList

    Model Document Title Document No.

    AXG AXG4A AX01C

    ADMAG TI Series AXG/AXW Magnetic Flowmeter Read Me First

    IM 01E21A21-01Z1

    ADMAG TI SeriesAXG/AXW Magnetic FlowmeterSafety Manual

    IM 01E21A21-02EN

    ADMAG TI Series AXG Magnetic Flowmeter Installation Manual

    IM 01E22A01-01EN

    ADMAG TI Series AXG Magnetic Flowmeter Maintenance Manual

    IM 01E22A01-02EN (this manual)

    ADMAG TI Series AXG Magnetic Flowmeter BRAIN Communication Type

    IM 01E22A02-01EN

    ADMAG TI Series AXG Magnetic Flowmeter HART Communication Type

    IM 01E22A02-02EN

    ADMAG TI Series AXG Magnetic Flowmeter General Specifications

    GS 01E22A01-01EN

    AXFA11G

    AXF SeriesMagnetic FlowmeterRead Me First

    IM 01E20A21-01Z1

    AXFA11G Remote Converter [Hardware Edition/Software Edition]

    IM 01E20C01-01E

    AXFA11G Remote Converter General Specifications GS 01E20C01-01E

    NOTEWhen describing the model name like AXG in this manual, means any of the following.002, 005, 010, 015, 025, 032, 040, 050, 065, 080, 100, 125, 150, 200, 250, 300, 350, 400, 500

    PrecautionsRelatedtotheProtection,Safety,andAlterationoftheInstrument

    The following safety symbol marks are used in this manual and instrument.

    WARNING

    A WARNING sign denotes a hazard. It calls attention to procedure, practice, condition or the like, which, if not correctly performed or adhered to, could result in injury or death of personnel.

    CAUTIONA CAUTION sign denotes a hazard. It calls attention to procedure, practice, condition or the like, which, if not correctly performed or adhered to, could result in damage to or destruction of part or all of the product.

    IMPORTANTAn IMPORTANT sign denotes that attention is required to avoid damage to the instrument or system failure.

    NOTEA NOTE sign denotes information necessary for essential understanding of operation and features.

    The following symbols are used in the Instrument and the manual to indicate the accompanying safety precautions:

    Protective grounding terminal

    Functional grounding terminal (This terminal should not be used as a protective grounding terminal.)Alternating currentDirect currentCautionThis symbol indicates that the operator must refer to an explanation in the users manual in order to avoid the risk of injury or death of personnel or damage to the instrument.

  • IM 01E22A01-02EN

    3 3 For the protection and safe use of the

    instrument and the system in which this instrument is incorporated, be sure to follow the instructions and precautions on safety that is stated in user's manual as listed in Table 1.1 whenever you handle the instrument. Take special note that if you handle the instrument in a manner that violated these instructions, the protection functionality of the instrument may be damaged or impaired. In such cases, YOKOGAWA does not guarantee the quality, performance, function, and safety of instrument.

    Should use the parts specified by YOKOGAWA when replacing. Please contact YOKOGAWAs service office for fuse replacement.

    Do not modify this instrument. YOKOGAWA will not be liable for malfunctions

    or damage resulting from any modification made to this instrument by the customer.

    The instrument should be disposed of in accordance with local and national legislation/regulations.

    RegardingThisUsersManual This manual should be provided to the end

    user. The contents of this manual are subject to

    change without prior notice. All rights reserved. No part of this manual

    may be reproduced in any form without YOKOGAWAs written permission.

    YOKOGAWA makes no warranty of any kind with regard to this manual, including, but not limited to, implied warranty of merchantability and fitness for a particular purpose.

    If any question arises or errors are found, or if any information is missing from this manual, inform the nearest YOKOGAWA sales office.

    The specifications covered by this manual are limited to those for the standard type under the specified model number break-down and do not cover custom-made instruments.

    Note that changes in the specifications, construction, or component parts of the instrument may not immediately be reflected in this manual at the time of change, provided that postponement of revisions will not cause difficulty to the user from a functional or performance standpoint.

    This manual is intended for the following personnel;

    Engineers responsible for installation and wiring of the instrument.

    Personnel responsible for normal daily operation of the instrument.

    To ensure correct use, read this manual and the applicable manuals as listed in Table 1.1 thoroughly before starting operation. Read the general specifications as listed in Table 1.1 for its specification.

    Trademarks: All the brands or names of Yokogawa

    Electrics products used in this manual are either trademarks or registered trademarks of Yokogawa Electric Corporation.

    All other company and product names mentioned in this manual are trade names, trademarks or registered trademarks of their respective companies.

    In this manual, trademarks or registered trademarks are not marked with or .

  • IM 01E22A01-02EN

    4 4

    1.1 For Safe Use of ProductFor the protection and safe use of the instrument and the system in which this instrument is incorporated, be sure to follow the instructions and precautions on safety that is stated in user's manual as listed in Table 1.1 whenever you handle the instrument. Take special note that if you handle the instrument in a manner that violated these instructions, the protection functionality of the instrument may be damaged or impaired. In such cases, YOKOGAWA shall not be liable for any indirect or consequential loss incurred by either using or not being able to use the Instrument.

    Maintenance

    WARNING

    The magnetic flowmeter is a heavy instru-ment.

    Be careful that no damage is caused personnel through accidentally dropping it, or by exerting excessive force on the magnetic flowmeter. When moving the magnetic flowmeter, always use a trolley and have at least two people carry it.

    When the magnetic flowmeter is process-ing hot fluids, the instrument itself may become extremely hot. Take sufficient care not to get burnt.

    Where the fluid being processed is a toxic substance, avoid contact with the fluid and avoid inhaling any residual gas, even after the instrument has been taken off the piping line for maintenance and so forth.

    Do not apply excessive weight, for exam-ple, a person stepping on the magnetic flowmeter.

    Wiring and maintenance of the magnetic flowmeter must be performed by expert engineer or skilled personnel. No operator shall be permitted to perform procedures relating to wiring and maintenance.

    Do not open the cover in wet weather or humid environment. When the cover is open, stated enclosure protection is not applicable.

    Ensure that the power supply is off in order to prevent electric shocks.

    When opening the cover, wait for more than 20 minutes after turning off the pow-er. Only expert engineer or skilled person-nel are permitted to open the cover.

    Ensure the protective grounding terminal is grounded before turning on the power.

    WARNING

    Install an external switch or circuit breaker as a means to turn the power off (capac-itance: 15A, conforming to IEC60947-1 and IEC60947-3).

    Locate this switch either near the instru-ment or in other places facilitating easy operation. Affix a "Power Off Equipment" label to this external switch or circuit breaker.

    When opening and closing the cover, be sure to handle the cover carefully so that there are no damage and foreign matter adhesion at its threads and O-ring.

    Keep checking their condition and clean the threads in case of adhering the foreign matter.

    Replace the cover in case the treads receive damages.

    Replace the O-ring if there is any scarring or transformation.

    And apply silicone based grease at the O-ring in case of the shortage and ex-haustion of grease.

    If dirt, dust or other substances surfaces on the glass of display cover, wipe them clean with a soft dry cloth.

    Wiring work should be done adequate wire, sleeve crimp and torque force. Use terminal with insulating cover for the pow-er supply wiring and protective grounding wiring. Do not pull the wires too much strongly in order to prevent electric shocks caused by their damage.

    This instrument employs the parts which are affected by a function damage caused by static electricity. Thus, you should do the antistatic work using an anti-static wrist band for it and be careful to avoid touching each electrical parts and circuitry directly.

    When connecting the wiring, check that the supply voltage is within the range of the voltage specified for this instrument before connecting the power cable. In addition, check that no voltage is applied to the power cable before connecting the wiring.

    To prevent electric shocks, ensure the electrical wiring cover is completely at-tached after the wiring work.

    To prevent electric shocks, do not impress over rated voltage to each input/output terminals.

  • IM 01E22A01-02EN

    5 5

    WARNING

    If there is any unused cable entry, use the blanking plug to cover which comes with this instrument or which is supplied by YOKOGAWA. The blanking plug should be fastened into the unused cable entry without any mistake. If not, stated enclo-sure protection is not applicable.

    Maintenance of this flowmeter should be implemented in a maintenance service shop where the necessity tools and envi-ronment condition are provided.

    The necessity of this environmental con-dition is that ambient temperature is 5 to 40C (the maximum relative humidity is 80 % for temperature 5 to 31C, and decreas-ing linearly to 50 % relative humidity at 40C).

    Be sure to enable the write protect func-tion to prevent the overwriting of parame-ters after finishing parameter setting.

    In rare cases, the IR switches may re-spond unexpectedly to water drops or extraneous substances sticking on the surface of display panel, due to the oper-ating principal. The possibility of malfunc-tion arises after rain or cleaning operation near the place where the flowmeter is installed. Turning on and off the flashlight etc. towards the IR switch may also be a cause of malfunction.

    Read Chapter 6 for the hardware write protect function, and the user's manual of applicable communication type as listed in Table 1.1 for the software write protect function.

    1.2 Warranty The warranty shall cover the period noted on

    the quotation presented to the purchaser at the time of purchase. Problems occurred during the warranty period shall basically be repaired free of charge.

    In case of problems, the customer should contact the YOKOGAWA representative from which the instrument was purchased, or the nearest YOKOGAWA office.

    If a problem arises with this instrument, please inform us of the nature of the problem and the circumstances under which it developed, including the model specification and serial number. Any diagrams, data and other information you can include in your communication will also be helpful.

    Responsible party for repair cost for the problems shall be determined by YOKOGAWA based on our investigation.

    The Purchaser shall bear the responsibility for repair costs, even during the warranty period, if the malfunction is due to:- Improper and/or inadequate maintenance by

    the purchaser.- Failure or damage due to improper handling,

    use or storage which is out of design conditions.

    - Use of the product in question in a location not conforming to the standards specified by YOKOGAWA, or due to improper maintenance of the installation location.

    - Failure or damage due to modification or repair by any party except YOKOGAWA or an approved representative of YOKOGAWA.

    - Malfunction or damage from improper relocation of the product in question after delivery.

    - Reason of force majeure such as fires, earthquakes, storms/floods, thunder/lightening, or other natural disasters, or disturbances, riots, warfare, or radioactive contamination.

    1.3 Regular Inspection Items(1) Inspectionofmoisture-proofinginsidethe

    terminalbox:Once/year(2) Retighteningofpipingjointscrews:About

    twice/year(3) Inspection of electrodes and lining (in case

    ofadhesiveand/orabrasivefluids,etc.) Determine the period of regular inspection as necessary.

  • IM 01E22A01-02EN

    6 6

    2. ModelandSpecificationsCheckAs shown in Figure 2.1 to Figure 2.4, the model, suffix code, serial number, meter factor, fluid specification, and device information are found on the name plate located on the outside of the housing. And, this instrument can check their information from parameters. Read the users manual of applicable communication type as listed in Table 1.1 for checking device information from parameters.When checking the matching of model and specification you ordered, see the applicable general specifications as listed in Table 1.1.Be sure you have the model code and serial number available when contacting YOKOGAWA.

    F0202.ai

    Figure 2.2 Name Plate (AXG Remote Sensor)

    F0204.ai Figure 2.4 Name Plate (AXFA11 Remote Transmitter)

    F0201.ai

    Figure 2.1 Name Plate (AXG Integral Flowmeter)

    F0203.ai

    Figure 2.3 Name Plate (AXG4A Remote Transmitter)

    Note: Description on the nameplate - Made in _______: Country of origin - COMB No.: Serial number of the combined remote

    sensor or remote transmitter

  • IM 01E22A01-02EN

    7 7

    IMPORTANTThe following types can not be changed direction of cable entry after delivery.

    Submersible Type For District Heating and Cooling or

    Condensation-proof (Optional code: DHC)

    (1) The following tool is required. Hexagonal wrench (nominal size 5)

    (2) Turn off the power to the flowmeter.(3) Using the wrench, unscrew the four hexagonal

    bolts at the neck of transmitter or terminal box.

    F0301.ai

    AXG Remote SensorAXG Integral Flowmeter

    CAUTIONDo not loosen the screw at the opposite side of cable entry (see the figure below).

    F0302.ai

    (4) Rotate the transmitter or the terminal box in the desired direction. The direction can be changed to -90 degrees, +90 degrees or +180 degrees.

    NOTEThe transmitter and the terminal box can be rotated -90 degrees to +180 degrees at every 90 degrees from the arrow mark indicating the flow direction. Do not exceed these angle.

    (5) Tighten diagonally the four hexagonal bolts with the hexagonal wrench, and then be sure to check that the transmitter or the terminal box was firmly fixed to the sensor.

    F0303.ai

    AXG Remote Sensor

    Upstream side

    Downstream side

    0 degrees

    +90 degrees +180 degrees

    -90 degrees

    0 degrees

    +90 degrees +180 degrees

    -90 degrees

    AXG Integral Flowmeter

    Upstream side

    Downstream side

    3. ChangingDirectionofCableEntry

  • IM 01E22A01-02EN

    8 8

    The hygienic type can be mounted to the piping using a clamp, a union, or a welded joint. This chapter describes how to remove and install an adapter for butt weld joint as an example. Apply the same procedure to clamp and union adapters.

    CAUTION

    Turn off the power of the magnetic flowmeter, and confirm that there is no fluid inside the pipe before removing the instrument from the pipe line.

    When installation, read the applicable installation manual as listed in Table 1.1.

    (1) Removing adapter

    Remove the butt weld adapter by loosening the mounting bolts.

    (2) Installing adapter

    Install a gasket to fit in the groove of the butt weld adapter, and tighten the mounting bolts.

    F0401.ai

    Gasket

    Adapter for butt weld joint

    Adapter mounting bolt

    Mini-flange

    Figure4.1 MountingProcedureforButtWeldJointType

    CAUTION

    In case of EPDM rubber gasket (standard), tighten the adapter mounting bolt according to the torque values in Table 4.1.

    In case of silicon rubber gasket (optional code GH), tighten the adapter mounting bolt according to the torque values in Table 4.2.

    Tighten the adapter mounting bolts in diagonal order step by step.

    After tightening of bolts, confirm that gaskets protrude inside adapter. Protruding of gasket is necessary to keep the hygienic requirements.

    Table4.1 TighteningTorqueValuesofadapterforEPDMrubbergasket

    Tighteningtorquevalues(Nm/[in.lbf])Gaskettype

    Sizemm(inch)EPDMrubber

    (standard)15 (0.5), 25 (1.0), 32 (1.25), 40 (1.5) 3.0 to 3.5 / [26.55 to 30.98]

    50 (2.0), 65 (2.5) 4.5 to 5.0 / [39.83 to 44.25]

    80 (3.0) 8.0 to 9.0 / [70.81 to 79.65]

    100 (4.0), 125 (5.0) 10 to 11 / [88.50 to 97.35]

    Table4.2 TighteningTorqueValuesofadapterforsiliconrubbergasket

    Tighteningtorquevalues(Nm/[in.lbf])

    GaskettypeSizemm(inch)

    Siliconrubber(optional code GH)

    15 (0.5), 25 (1.0), 40 (1.5) 2.0 to 2.5 / [17.70 to 22.13]

    50 (2.0), 65 (2.5), 80 (3.0) 4.0 to 4.5 / [35.40 to 39.83]

    100 (4.0), 125 (5.0) 6.0 to 6.5 / [53.10 to 57.53]

    4. Removing and Installing Adapters for Hygienic Types

  • IM 01E22A01-02EN

    9 9

    CAUTION

    The lining of Hygienic type uses fluorocarbon PFA. For the property of fluorocarbon PFA, it is possible that the adapter mounting bolts may loosen as time passes, so retighten them regularly. Tighten the adapter mounting bolts in diagonal order step by step.

    In case of leakage from adapter connection point, retighten the adapter mounting bolts. If leakage doesnt stop even if they are retightened, replace the gasket between mini-flange of flowmeter and adapter.

    It is recommended to replace the gasket periodically. The replacement period needs to be decided with consideration for the frequency of cleaning cycles, the cleaning temperature and the fluid temperature.

  • IM 01E22A01-02EN

    10 10

    5.1 ChangingDirectionofDisplay Unit

    (1) RemovingtheCover

    The following tool is required. Hexagonal wrench (nominal size 3)

    Turn off the power to the flowmeter. When opening the cover, wait for more than

    20 minutes after turning off the power. Using the wrench, loosen the cover locking

    screw (1) (See Figure 5.1.1 and Figure 5.1.2) clockwise to unlock the cover. Upon shipment from the manufacturing plant, the cover is locked. Hold the flowmeter with your hand. Remove the cover by rotating it counterclockwise.

    F0501.aiCover locking screw

    (1)

    Figure5.1.1 RemovingtheDisplayCover (AXG Integral Flowmeter)

    F0502.ai

    (1)

    Cover locking screw

    Figure5.1.2 RemovingtheDisplayCover (AXG4A Remote Transmitter)

    (2) ChangingDisplayUnitDirection90degrees

    Hold the display unit with your hand and loosen the two mounting screws.

    Rotate the display unit 90 degrees clockwise and confirm the assembling position, taking care of the connector and wire of the display unit. At this time, do not remove the connector.

    Secure the display unit using its two mounting screws.

    F0503.aiClockwise 90 degrees

    Mounting screw(two screws)

    Figure5.1.3 ChangingDisplayUnitDirection90degrees

    IMPORTANTTo preserve the safety, do not touch the electrical circuit and cable of shaded area.

    (3) InstallingtheCover

    Install the cover to the flowmeter by rotating the cover clockwise.

    Tighten cover locking screw (1) (See Figure 5.1.1 and Figure 5.1.2) counterclockwise using a hexagonal wrench (nominal size 3) to lock the cover.

    IMPORTANTBe sure to screw the cover firmly into the housing without any space between them.

    5. Transmitter Maintenance (Integral Flowmeter and Remote Transmitter)

  • IM 01E22A01-02EN

    11 11

    5.2 MaintenanceoftheDisplay

    CAUTION

    The display has certain lifespan and it may deteriorate during operation. Contact Yokogawa office in this case.

    5.3 ChangingofDisplayBoard(1) RemovingtheCover

    Read Section 5.1 and remove the cover.

    (2) RemovingtheDisplayBoard

    Hold the display unit with your hand and loosen the two mounting screws.

    F0504.ai

    Mounting screw (two screws)

    Connector

    Display board

    F0505.ai

    Details

    Connector insertion port

    Figure 5.3 Connector Insertion Port of Display Board

    WARNING

    Do not use the insertion port of display board for other purposes, because some areas inside the connector insertion port have high voltages.Do not insert except the connector into the insertion port of display board.

    (3) RemovingtheConnector

    Because of lock type connector, according to " UNLOCK" as shown in Figure 5.3, unlock by pushing the lever in the direction of " " mark, and then remove the connector.

    (4) InstallingtheDisplayBoard

    Insert the connector into connector insertion port of display board.

    Taking care not to entangle the cables of connector, confirm the installation direction, and fix the display board with two screws.

    (5) InstallingtheCover

    Read Section 5.1 and install the cover.

  • IM 01E22A01-02EN

    12 12

    5.4 ParameterBackup/Restore/Duplicate

    A backup of parameter setting can be stored to the built-in memory on the display unit (display board). The backup be restored to the device and also be duplicated to other device with the same model, suffix code, hardware and software revision through the display board with the backup. For the remote type, It is necessary to set the device information of remote sensor into the parameters of remote transmitter.Read the users manual of applicable communication type as listed in Table 1.1 for checking device information from parameters and for functions in detail.

    F0506.ai

    Display Board ofAXG 1

    Backup Restore

    Duplicate

    AXG 1 AXG 2

    Figure 5.4 Parameter Transfer

    Execution of "Restore" and "Duplicate" requires the matching on product specification as listed in following table.

    M:Items to be Matched.Device Information Duplicate Data Restore Data

    Option Board ID M MTransmitter Serial No MSensor Serial No MMain Board Software Rev. M MSensor Board Software Rev. M M

    Display Board Software Rev. M M

    Model (Note) M MCommunication and I/O Code M M

    Note: Only between AXG type and AXG type can be duplicated or restored the data.

  • IM 01E22A01-02EN

    13 13

    NOTE

    The integral type is explained as an example. Pay same attention to the AXG4A remote transmitter.

    For AXFA11, read the applicable users manual as listed in Table 1.1.

    IMPORTANT Removing and installing the cover are necessary

    for hardware switches. Perform removing and installing the cover as described in Section 5.1. When opening the cover, wait for more than 20 minutes after turning off the power. This work must be carried out by the trained personnel having knowledge of safety standard.

    To preserve the safety, do not touch the electrical circuit and the cables except the setting switches.

    When installing the cover, in order to contact the housing and the cover, be sure to screw it firmly into the housing without any space between them.

    (1) Remove the cover.(2) While holding the display by hand, loosen the

    two mounting screws.(3) While holding the display by hand (careful for

    connecting cable), set the switches. Never remove connector in this case.

    F0601.ai

    Burnout switch (Switch 1)Write protect switch (Switch 2)

    Figure6.1 Hardwareswitches

    (4) Taking care not to entangle the cables, tighten the two screws on the display.

    (5) Install the cover.

    NOTEOn the front of the amplifier, the burnout switch (i.e., Switch 1) and the write protect switch (i.e., Switch 2) are located adjacent to each other. Accordingly, special care should be taken when making switch settings.

    (1) SettingofBurnoutSwitchThe burnout function sets the direction of current output in situations where the CPU has become damaged. Upon shipment from the manufacturing plant, the burnout direction is set to High (i.e., > 21.6 mA); however, in cases where the optional codes C1 or C2 have been specified, the output direction will be set to Low (i.e., < 2.4 mA).Modification of the burnout direction must be carried out using the burnout switch (i.e., Switch 1) (See Figure 6.1).

    Table6.1 Burnoutswitch(Switch1)

    Position of Switch

    BurnoutDirection

    BurnoutOutput Description

    ONOFF

    HL

    1 2High > 21.6 mA

    When optional code C1 or C2 is not specified, the setting is High.

    ONOFF

    HL

    1 2Low < 2.4 mA

    When optional code C1 or C2 is specified, the setting is Low.

    6. HardwareSwitchSetting

  • IM 01E22A01-02EN

    14 14(2) SettingofWriteProtectSwitch

    The write protect function is to prevent the overwriting of parameters.Write protection can be carried out using either the write protection switch (Switch 2) (See Figure 6.1) or software function with parameter setting. If either of these items is activated, the overwriting of parameters will be prohibited.

    Table6.2 Writeprotectswitch(Switch2)

    Position of Switch Write Protect Function

    ONOFF

    HL

    1 2 OFF (Factory setting)Parameter can be overwritten.

    ONOFF

    HL

    1 2 ONParameter can not be overwritten.

    NOTE

    Only if the write protect switch (Switch 2) (See Figure 6.1) and the software write protect are disabled, write protect can be disabled.

    For the software write protect, read the users manual of applicable communication type as listed in Table 1.1.

  • IM 01E22A01-02EN

    15 15

    WARNING

    Before checking, be sure to disconnect the cables from the terminals of the remote sensor.

    7.1 RemovingorInstallingtheCover (Remote Sensor)

    This section describes how to remove and install the cover for remote sensor. For integral flowmeter and remote transmitter, read Section 5.1.

    (1) RemovingtheCoverLoosen the cover locking screw (1) (See Figure 7.1) clockwise using a hexagonal wrench (nominal size 3) to unlock the cover. Upon shipment from the manufacturing plant, the cover is unlocked. Hold the sensor with your hand and remove the cover by turning it in the direction of the arrow as shown below.

    F0701.ai

    (1)

    Figure7.1 RemovingtheCover(RemoteSensor)

    (2) InstallingtheCover

    Install the cover to the terminal box by turning it clockwise. Tighten the cover locking screw (1) (See Figure 7.1) counterclockwise using a hexagonal wrench (nominal size 3) to lock the cover.

    7.2 ExcitationCoilCheckCheck that there is continuity between excitation terminals "EX1" and "EX2" in the remote sensor. If there is no continuity, the coils may be broken, and replacement or repair of the sensor is necessary. If the coil resistance is 150 or more, this may be an abnormal condition. Consult YOKOGAWAs sales or service offices.

    7.3 InsulationResistanceCheckCheck the insulation resistances in the remote sensor in accordance with the tables below. If any of them falls below the values listed in the tables, consult YOKOGAWAs sales or service offices. If the insulation resistance cannot be restored, replacement or repair of the sensor is necessary.

    Coil CircuitChecking is possible even if the pipe is filled with fluid.

    Terminal TestVoltage SpecificationExcitation current terminal (EX1) and Common terminal (C)

    500 V DC (Use an insulation tester or the equivalent.)

    1 M or more

    Signal CircuitBefore checking, be sure to empty and dry the interior of the pipe, checking that there is no adhesive material.

    Terminal TestVoltage SpecificationCommon terminal (C) and Signal terminal (A)Common terminal (C) and Signal terminal (B)

    500 V DC (Use an insulation tester or the equivalent.)

    100 M or more(between each terminal)

    CAUTION

    In case of the following types, remove the wiring connection on the transmitter side and measure resistance at the cable terminals. Submersible Type For District Heating and Cooling or

    Condensation-proof (Optional code: DHC)

    7. Excitation Coil and Insulation ResistanceCheck(RemoteSensor)

  • IM 01E22A01-02EN

    16 16

    This instrument incorporates the verification function and can self-diagnose the health of device by using it.There are cases that a magnetic flowmeter does not perform normally by failure of magnetic, excitation or calculation circuit, or insulation deterioration of excitation coil or electrodes. It is recommended to check the devices normal performance periodically (one or two years) by executing the verification function.The verification function can diagnose circuits (magnetic, excitation, and calculation circuit), device status (alarm occurrence) and wiring connection (excitation and signal cable), in approximately 15 minutes, without removing a flowmeter from the piping.The verification function can be executed in both fluid statuses of the fluid flowing and the fluid not flowing. For accurate diagnosis, it is recommended to execute it in each fluid status. Especially, in order to check if the excitation cable and the signal cable were perfectly wired when at the installation of flowmeter, it is recommended to execute it in the flow status of the fluid not flowing at first. The diagnosis results can be stored on the device memory and compared with the previous diagnosis result.

    CAUTIONBefore executing the verification function, be sure to disconnect this instrument from the control loop.

    NOTE Before using the verification function, always

    make sure that the sensor is in the full pipe state. If the sensor is in the empty pipe state, this function may not run normally.

    When using the verification function, be sure to correctly specify the fluid status.

    Before executing the verification function, confirm that any warning or alarm does not occur.

    For the following application, be careful that the verification function may not perform normally.- Flow rate is extremely low.- Conductivity of fluid is lower than the product

    specifications.- Fluid includes slurrys.- Fluid includes many bubbles.- Stray current occurs.

    8. DeviceHealthDiagnosisbyVerificationFunction

  • IM 01E22A01-02EN

    17 17

    8.1 ParameterofVerificationFunction

    The verification function can be executed from the display unit or the applicable communication tool. This chapter describes the parameters related with the verification function. For more details, read the users manual of applicable communication type as listed in Table 1.1.

    NOTEThe language on the display is set to English as default upon shipment from the manufacturing plant. Select the adequate language referring to the installation manual as listed in Table 1.1. The display menu path on this manual is selected to English.

    Display Menu Path:Device setupLanguage

    DisplayMenuPath:Device setupDiag/ServiceVerification (see below)

    (1) Mode Specifies the fluid status to execute the verification function.*1

    (2) Execute Specifies the execution of the verification function.*2

    (3) VF No Specifies the diagnosis result display time.*3

    Device setupDiag/ServiceVerification Result(see below)(4) Failed/Passed Displays the diagnosis result.*4

    (5) Magnetic circuit The diagnosis result of the magnetic circuit.*4

    (6) Excite circuit The diagnosis result of the excitation circuit.*4

    (7) Calc circuit The diagnosis result of the calculation circuit.*4

    (8) Device status The diagnosis result of the device alarm.*4

    (9) Connect status Wiring misconnection check result.*4

    HARTCommunicationMenuPath:Maintenance root menuVerification(see below)

    (1) VF mode Specifies the fluid status to execute the verification function.*1

    (2) Verification Exe Specifies the execution of the verification function.*2

    (3) VF No Specifies the diagnosis result display time.*3

    Maintenance root menuVerification Result(see below)(4) VF check result Displays the diagnosis result.*4

    (5) Magnetic circuit resultThe diagnosis result of the magnetic circuit.*4

    (6) Excitation circuit resultThe diagnosis result of the excitation circuit.*4

    (7) Calculation circuit resultThe diagnosis result of the calculation circuit.*4

    (8) VF device status resultThe diagnosis result of the device alarm.*4

    (9) Connection status resultWiring misconnection check result.*4

    BRAINCommunication:(1) L50:VF MODE Specifies the fluid status to execute the verification function.*1

    (2) L51:VF EXE Specifies the execution of the verification function.*2

    (3) L52:VF NO Specifies the diagnosis result display time.*3(4) L53:VF CHK RES Displays the diagnosis result.*4

    (5) L55:VF MAG RES The diagnosis result of the magnetic circuit.*4

    (6) L56:VF EXCIT RESThe diagnosis result of the excitation circuit.*4

    (7) L57:VF CALC RESThe diagnosis result of the calculation circuit.*4

    (8) L58:VF DEV RES The diagnosis result of the device alarm.*4

    (9) L59:VF CONN RESWiring misconnection check result.*4

  • IM 01E22A01-02EN

    18 18*1: From the table below, select the fluid status required to execute

    the verification function.

    No flow Executes the verification function with the fluid not flowing.

    Flow Executes the verification function with the fluid flowing.

    *2: From the table below, select whether to execute the verification function.

    Not execute Does not execute the verification function.Execute Executes the verification function.

    *3: From the table below, select the execution result of the verification function.

    Factory Displays the result obtained upon shipment from the manufacturing plant.Previous Displays the previous result.Present Displays the result at this time.

    *4: The diagnosis result is judged as shown below.

    Passed There are no problems concerning the diagnosis result.

    Failed There is a problem concerning the diagnosis result.Canceled Cancels the diagnosis.*5

    No Data No diagnosis result data (The verification function is not used.)Unknown Cannot perform a diagnosis.

    *5: When the alarms in the following table occur or big flow noise is detected during the diagnosis runs, the diagnosis will stop.

    Display BRAIN HART010: Main CPU FAIL

    10: Main CPU FAIL 10

    Main board CPU failure

    014: Snsr bd FAIL 14: Snsr bd FAIL 14 Sensor board failure

    015: Snsr comm ERR

    15: Snsr comm ERR 15

    Sensor communication error

    016: AD 1 FAIL[Sig] 16: A/D1 FAIL 16

    A/D1 failure[Signal]

    017: AD 2 FAIL[Excit] 17: A/D2 FAIL 17

    A/D2 failure[Exciter]

    050: Signal overflow 50: Sig overflow 50 Signal overflow

    051: Empty detect 51: Empty detect 51 Empty pipe detection

  • IM 01E22A01-02EN

    19 19

    8.2 ExecutionofVerificationFunctionIn accordance with the following flowchart, execute the verification function.

    F0801.ai

    START

    Does any alarm or warning occur?

    Does the size of the sensor match with the parameters about size?

    With the parameter (4) described in Section 8.1, which

    diagnosis result is judged?

    FINISH

    NO

    YES

    Is the sensor completely full of fluid?NO

    YES

    YES

    NO

    Confirm the execution completion of the verification function.

    With the parameter (3) described in Section 8.1, select the execution result this time.

    Passed Canceled

    See the flowchart in Section 8.3.

    Unknown or Failed

    With the parameter (1) described in Section 8.1, select the fluid status required to execute the verification function.

    With the parameter (2) described in Section 8.1, execute the verification function.

    Connect the appropriate flowmeter, or set the parameter correctly reading the user's manual of applicable communica-tion type as listed in Table 1.1.

    Read the "Installation" in the installation manual as listed in Table 1.1, and adjust the mounting position or mounting orientation to maintain the interior of the sensor filled with fluids.

    Read the "Errors and Countermeasures" in the installation manual as listed in Table 1.1, and solve the problem.

  • IM 01E22A01-02EN

    20 20

    8.3 ConfirmationofVerificationFunctionIn accordance with the following flowchart, confirm the diagnosis result.

    F0802.ai

    The

    A/D

    con

    vers

    ion

    circ

    uit o

    r the

    CPU

    op

    erat

    ion

    circ

    uit m

    ay b

    reak

    dow

    n.W

    hich

    type

    is u

    sed,

    inte

    gral

    type

    or r

    emot

    e ty

    pe?

    STAR

    T

    (5)

    (6)

    (9)

    (7)

    (8)

    Wha

    t is

    the

    diag

    nosi

    s re

    sult

    of th

    e pa

    ram

    eter

    (6) i

    n Se

    ctio

    n 8.

    1?(E

    xcita

    tion

    circ

    uit)

    Wha

    t is

    the

    diag

    nosi

    s re

    sult

    of th

    e pa

    ram

    eter

    (7) i

    n Se

    ctio

    n 8.

    1?(C

    alcu

    latio

    n ci

    rcui

    t)

    Wha

    t is

    the

    diag

    nosi

    s re

    sult

    of th

    e pa

    ram

    eter

    (8) i

    n Se

    ctio

    n 8.

    1?(D

    evic

    e st

    atus

    )

    Wha

    t is

    the

    diag

    nosi

    s re

    sult

    of th

    e pa

    ram

    eter

    (9) i

    n Se

    ctio

    n 8.

    1?(C

    onne

    ct s

    tatu

    s)

    The

    flow

    met

    er m

    ay b

    reak

    dow

    n.

    Con

    tact

    YO

    KOG

    AWA

    serv

    ice

    cent

    er.

    Inte

    gral

    type

    Rem

    ote

    type

    No

    flow

    Flow

    Unk

    now

    n or

    Fai

    led

    Unk

    now

    nFa

    iled

    Unk

    now

    n or

    Fai

    led

    Con

    tact

    YO

    KOG

    AWA

    serv

    ice

    cent

    er.

    Faile

    d

    Unk

    now

    n

    Was

    the

    verif

    icat

    ion

    func

    tion

    exec

    uted

    twic

    e or

    mor

    e?

    This

    flow

    met

    er m

    ay b

    reak

    dow

    n.

    Con

    tact

    YO

    KOG

    AWA

    serv

    ice

    cent

    er.

    Doe

    s th

    e re

    sult

    this

    tim

    e va

    ry

    from

    the

    prev

    ious

    one

    ?

    Exec

    ute

    the

    verif

    icat

    ion

    func

    tion

    agai

    n.YE

    S

    NO Con

    firm

    the

    diag

    nosi

    s re

    sult

    read

    ing

    Sect

    ion

    8.2.

    STAR

    T

    See

    Flow

    char

    t B.

    B NO

    YES

    See

    Flow

    char

    t B.

    See

    Flow

    char

    t B.

    A

    Unk

    now

    n or

    Fai

    led

    See

    Flow

    char

    t B.

    See

    Flow

    char

    t B.

    Amon

    g th

    e pa

    ram

    eter

    (5) t

    o (9

    ) in

    Sect

    ion

    8.1,

    whi

    ch

    para

    met

    er in

    dica

    tes

    "Fai

    led"

    or "

    Unk

    now

    n"?

    Wha

    t is

    the

    diag

    nosi

    s re

    sult

    of th

    e pa

    ram

    eter

    (5) i

    n Se

    ctio

    n 8.

    1?(M

    agne

    tic c

    ircui

    t)

    The

    wirin

    g of

    the

    excit

    atio

    n ca

    ble

    or th

    e sig

    nal c

    able

    m

    ay b

    e in

    corre

    ct. C

    heck

    if th

    e ca

    bles

    are

    con

    nect

    ed

    corre

    ctly.

    In th

    e ca

    se th

    at th

    e ca

    bles

    are

    con

    nect

    ed c

    orre

    ctly,

    the

    grou

    ndin

    g ca

    ble

    or th

    e gr

    ound

    ing

    ring,

    etc

    . may

    hav

    e an

    in

    fluen

    ce. R

    ead

    the

    "Inst

    alla

    tion"

    and

    "Wiri

    ng" i

    n th

    e In

    stal

    latio

    n M

    anua

    l as

    liste

    d in

    Tab

    le 1

    .1, a

    nd c

    heck

    if

    the

    inst

    alla

    tion

    and

    the

    wirin

    g ha

    ve b

    een

    done

    cor

    rect

    ly.

    Not in

    a sta

    te po

    ssibl

    e to e

    xecu

    te the

    verifi

    catio

    n fun

    ction

    .W

    hen r

    esult

    of th

    e par

    amete

    r (6)

    in S

    ectio

    n 8.1

    is P

    asse

    d, c

    heck

    the f

    ollow

    ing.

    Ch

    eck i

    f the f

    oreig

    n matt

    er is

    adh

    ering

    to el

    ectro

    de.

    Ch

    eck i

    f the f

    luid c

    ondu

    ctivit

    y fulf

    ill the

    spec

    ificati

    on

    of me

    asur

    able

    cond

    uctiv

    ity.

    The

    exci

    tatio

    n ci

    rcui

    t may

    bre

    ak d

    own,

    or

    the

    coil

    insu

    latio

    n m

    ay d

    eter

    iora

    te.

    Not i

    n a

    stat

    e po

    ssib

    le to

    exe

    cute

    the

    verif

    icatio

    n fu

    nctio

    n.W

    hen

    resu

    lt of

    the

    para

    met

    er (6

    ) in

    Sect

    ion

    8.1

    is P

    asse

    d, c

    heck

    the

    follo

    wing

    .

    Chec

    k if

    the

    fore

    ign

    mat

    ter i

    s a

    dher

    ing

    to e

    lect

    rode

    .

    Chec

    k if

    the

    fluid

    con

    duct

    ivity

    fulfil

    l the

    spe

    cifica

    tion

    of

    mea

    sura

    ble

    cond

    uctiv

    ity.

    Read

    the "

    Erro

    rs an

    d Cou

    nterm

    easu

    res"

    in th

    e Ins

    tallat

    ion

    Manu

    al as

    listed

    in T

    able

    1.1, a

    nd so

    lve th

    e pro

    blem.

    Whe

    n th

    e ve

    rific

    atio

    n fu

    nctio

    n is

    exe

    cute

    d w

    ith th

    e pa

    ram

    eter

    (1) i

    n Se

    ctio

    n 8.

    1,

    wha

    t is

    the

    fluid

    sta

    tus?

    Zero

    poi

    nt (0

    m/s

    ) may

    be

    abno

    rmal

    . Rea

    d th

    e "G

    roun

    ding

    " in

    the

    inst

    alla

    tion

    man

    ual a

    s lis

    ted

    in

    Tabl

    e 1.

    1, a

    nd c

    heck

    if th

    e tra

    nsm

    itter

    and

    the

    sens

    or a

    re c

    ompl

    etel

    y gr

    ound

    ed.

    Che

    ck if

    the

    stat

    e th

    at th

    e flu

    id d

    oes

    not f

    low

    .

    Flow

    noi

    se m

    ay h

    ave

    an in

    fluen

    ce.

    Rea

    d th

    e "In

    stal

    latio

    n" a

    nd P

    ipin

    g D

    esig

    n Pr

    ecau

    tions

    in

    the

    inst

    alla

    tion

    man

    ual a

    s lis

    ted

    in

    Tabl

    e 1.

    1, e

    nsur

    e th

    at th

    e flo

    w n

    oise

    is d

    ecre

    ase

    as li

    ttle

    as p

    ossi

    ble.

  • IM 01E22A01-02EN

    21 21

    9. TroubleshootingThis chapter describes troubleshooting procedures, when the trouble occurs in the magnetic flowmeter.For AXFA11, read the applicable users manual as listed in Table 1.1.

    9.1 No DisplayIf nothing is displayed on the display even though the fluid is flowing, check according to the flowchart below.

    START

    NO

    YES

    NO

    YES

    YES

    YES

    NO

    NO

    YES

    Confirm that 4 minutes have passed after enabling the electrode adhesion detecting function.

    NO

    Contact YOKOGAWA service center.

    Is anything being displayed?(Process value, icon, etc.)

    Is an error being displayed?(Check by the display or the

    communication tool.)

    Does the arrow on the sensor match with the flow direction?

    Is the sensor completely full of fluid?

    Is the electrode adhesion detecting function being enabled?

    Read the user's manual of applicable communication type as listed in Table 1.1, and check the electrode resistance.

    (Next page)

    Read the "Errors and Countermeasures" in the installation manual as listed in Table 1.1, and check the problem.

    Perform either of the followings: Reinstall the sensor in order to match the arrow

    with the flow direction. Read the user's manual of applicable communica-

    tion type as listed in Table 1.1, and set the parameter for reverse flow direction.

    Read the "Installation" in the installation manual as listed in Table 1.1, and adjust the mounting position or mounting orientation to maintain the interior of the sensor filled with fluids.

    Read the user's manual of applicable communica-tion type as listed in Table 1.1, and enable the electrode adhesion detecting function.

    F0901.ai

  • IM 01E22A01-02EN

    22 22

    Remove the foreign matter.

    Note: Execute the verification function in the state that the fluid is completely filled in the interior of the sensor and does not flow.

    FINISH

    NO

    YES

    YES

    NO

    YES

    NO

    NO

    YES

    Drain the fluid from the sensor and dry the interior fully to restore insulation resistance.

    Is the electrode resistance 4 M or less?

    (Continued)

    Contact YOKOGAWA service center.

    Remove the sensor from the piping.

    Is foreign matter adhering to the interior surface and the grounding ring?

    Does the insulation resistance fulfill the specification?

    Was the problem solved?

    In accordance with Chapter 7, check the insulation resistance of the remote sensor.

    Read Chapter 8 and the user's manual of applicable communication type as listed in Table 1.1, and execute the verification function. (Note)

    Remove the sensor from the piping and take the foreign matter away from the interior of the sensor. Especially the adhesive materials on the electrode surface and around the grounding ring must be removed.

    F0902.ai

  • IM 01E22A01-02EN

    23 23

    9.2 UnstableZeroPointif the adjustment value or output value of the zero point is unstable, check according to the flowchart below.

    F0903.ai

    START

    Is the sensor completely full of fluid?

    Are there bubbles in the fluid?

    Is valve or seal part between the sensor and the piping leaking?

    Is the flowmeter properly grounded?

    Install a defoaming device on the sensors upstream side.

    Was the problem solved?

    (Next page)

    FINISH

    NO

    YES

    YES

    NO

    YES

    NO

    NO

    YES

    YES

    NO

    Note: Execute the verification function in the state that the fluid is completely filled in the interior of the sensor and does not flow.

    Read Chapter 8 and the user's manual of applicable communication type as listed in Table 1.1, and execute the verification function. (Note)

    Read the "Installation" and "Wiring" in the installation manual as listed in Table 1.1, and completely ground the transmitter and the sensor.

    Repair or replace the grounding rings and the peripheral parts.

    Read the "Installation" in the installation manual as listed in Table 1.1, and adjust the mounting position or mounting orientation to maintain the interior of the sensor filled with fluids.

    Stop the leakage by replacing valve or seal member, etc.

    Confirm that the flowmeter has completely been grounded. Check the disconnection of grounding

    wire from grounding rings. Check the corrosion or missing of the

    fixing bolt for the grounding rings.

  • IM 01E22A01-02EN

    24 24

    F0904.aiContact YOKOGAWA service center.

    Read the user's manual of applicable communication type as listed in Table 1.1, and confirm the fluid conductivity.

    Does the fluid conductivity fulfill the specification of measurable conductivity?

    Is the fluid likely to adhere to the piping?

    Use the fluid with the measurable conductivity.

    Ensure that the fluids conductivity changes as little as possible. Whenever possible, reduce the flow velocity to being in the

    vicinity of the lower conductivity limit. Use the fluid with the measurable conductivity.

    Is the fluid conductivity decrease detecting function being enabled?

    (Continued)

    NO

    YES

    NO

    YES

    NO

    YES

    YES

    NO

    YES

    NO

    Confirm the fluid specification.

    Is the fluid likely to adhere to the piping?

    NO

    YES

    Read the user's manual of applicable communication type as listed in Table 1.1, and enable the fluid conductivity decrease detecting function.

    Confirm that 4 minutes have passed after enabling the fluid conductivity decrease detecting function.

    Read the general specifications as listed in Table 1.1, and confirm the measurable conductivity of this flowmeter.

    Remove dirt and scale.Especially clean the electrodes and the periphery of the grounding rings.Use a soft brush or cloth to perform scale removal, and make sure that the lining is not damaged.

    Provide the magnetic flowmeter with sufficient shielding or move it away from the electrical equipment.

    Is the flowmeter located near motors, transformers, or electric

    equipment?

    Is the fluid conductivity stable?Does the fluid conductivity fulfill the

    specification of measurable conductivity?

  • IM 01E22A01-02EN

    25 25

    9.3 DisagreementBetweenDisplayedFlowRateandActualFlowRateIf the displayed flow rate does not match the actual flow rate, check according to the flowchart below.

    (Next page) F0905.ai

    START

    YES

    Install a defoaming device on the sensors upstream side.

    NO

    NO

    YES

    NO

    YES

    YES

    NO

    Is the flowmeter properly grounded?NO

    NO

    YES

    YES

    Note: Execute the verification function in the state that the fluid is completely filled in the interior of the sensor and does not flow.

    Are the parameters related with flow rate and accuracy

    being set correctly?

    Read the user's manual of applicable communication type as listed in Table 1.1, and correctly set the parameters (meter factor, size, etc.) related with flow rate and accuracy.

    Is the sensor completely full of fluid?

    Was the zero adjustment carried out in the state that the fluid does

    not flow?

    Are there bubbles in the fluid?

    For remote type, is terminal treatment being

    carried out to the signal cable?

    Read Chapter 8 and the user's manual of applicable communication type as listed in Table 1.1, and execute the verification function. (Note)

    Fully terminate the signal cable using polyvinyl chloride tube or insulation tape, thus insuring that conductors, inner shields, and outer shields do not make contact with each other or with the case.

    Read the "Installation" and "Wiring" in the installation manual as listed in Table 1.1, and completely ground the transmitter and the sensor.

    Repair or replace the grounding rings and the peripheral parts.

    Execute zero adjustment when the fluid does not flow.

    Read the "Installation" in the installation manual as listed in Table 1.1, and adjust the mounting position or mounting orientation to maintain the interior of the sensor filled with fluids.

  • IM 01E22A01-02EN

    26 26

    (Continued)

    (Next page) (Next page)F0906.ai

    Was the problem solved?

    FINISH

    YES

    NO

    Read the user's manual of applicable communication type as listed in Table 1.1, and confirm the fluid conductivity.

    Does the fluid conductivity fulfill the specification of measurable conductivity?

    Use the fluid with the measurable conductivity.

    Is the fluid conductivity decrease detecting function being enabled?

    NO

    YES

    NO

    YES

    Is the fluid likely to adhere to the piping?

    NO

    YES

    Read the user's manual of applicable communication type as listed in Table 1.1, and enable the fluid conductivity decrease detecting function.

    Confirm that 4 minutes have passed after enabling the fluid conductivity decrease detecting function.

    Read the general specifications as listed in Table 1.1, and confirm the measurable conductivity of this flowmeter.

  • IM 01E22A01-02EN

    27 27

    (Continued) (Continued)

    F0907.ai

    May the terminal board of flowmeter be submerged?

    NO

    YES

    Does the insulation resistance fulfill the specification?

    NO

    YES

    Contact YOKOGAWA service center.

    NO

    YES

    Is required length of straight runs provided on the upstream side?

    In accordance with Chapter 7, check the insulation resistance of the remote sensor.

    Examine the operation of the transmitter using a calibrator in order to determine whether the fault lies in the transmitter or in the sensor.

    Drain the fluid from the sensor and dry the interior fully to restore insulation.

    Read the "Installation" in the installation manual as listed in Table 1.1, and provide required length of straight runs or change the layout.

    Is the fluid likely to adhere to the piping?

    Ensure that the fluids conductivity changes as little as possible. Whenever possible, reduce the flow velocity to being in the

    vicinity of the lower conductivity limit. Use the fluid with the measurable conductivity.

    NO

    YES

    YES

    NO

    Confirm the fluid specification.

    Remove dirt and scale.Especially clean the electrodes and the periphery of the grounding rings.Use a soft brush or cloth to perform scale removal, and make sure that the lining is not damaged.

    Is the fluid conductivity stable?Does the fluid conductivity fulfill the

    specification of measurable conductivity?

  • IM 01E22A01-02EN

    2828

    Revision Information Title : ADMAG TI Series AXG Magnetic Flowmeter Maintenance Manual Manual No. : IM 01E22A01-02EN

    Edition Date Page Revised Item1st June 2017 New publication

    Contents1.Introduction1.1For Safe Use of Product1.2Warranty1.3Regular Inspection Items

    2.Model and Specifications Check3.Changing Direction of Cable Entry4.Removing and Installing Adapters for Hygienic Types5.Transmitter Maintenance (Integral Flowmeter and Remote Transmitter)5.1Changing Direction of Display Unit5.2Maintenance of the Display5.3Changing of Display Board5.4Parameter Backup/Restore/Duplicate

    6.Hardware Switch Setting7.Excitation Coil and Insulation Resistance Check (Remote Sensor)7.1Removing or Installing the Cover (Remote Sensor)7.2Excitation Coil Check7.3Insulation Resistance Check

    8.Device Health Diagnosis by Verification Function8.1Parameter of Verification Function8.2Execution of Verification Function8.3Confirmation of Verification Function

    9.Troubleshooting9.1No Display9.2Unstable Zero Point9.3Disagreement Between Displayed Flow Rate and Actual Flow Rate

    Revision Information