Emerson Rosemount 5081-T Instruction Manual
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Emerson Rosemount 5081-T Instruction Manual

Emerson two-wire toroidal conductivity transmitter instruction manual
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Instruction Manual
PN 51-5081T/rev.D
February 2006
Model 5081-T
Two-Wire Toroidal Conductivity Transmitter
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Summary of Contents for Emerson Rosemount 5081-T

  • Page 1 Instruction Manual PN 51-5081T/rev.D February 2006 Model 5081-T Two-Wire Toroidal Conductivity Transmitter...

  • Page 2: About This Document

    ® Communicator is used with these transmitters, the software within the Model 375 may require modification. If a software modification is required, please contact your local Emerson Process Management Service Group or National Response Center at 1-800-654-7768. This manual contains instructions for installation and operation of the Model 5081-T Two-Wire Conductivity Transmitter.

  • Page 3: Table Of Contents

    Sensor Wiring ... Electrical Installation ... INTRINSICALLY SAFE AND EXPLOSION PROOF INSTALLATIONS... Intrinsically Safe and Explosion-Proof Installation for Model 5081-T-HT ... Intrinsically Safe and Explosion-Proof Installation for Model 5081-T-FF ... Intrinsically Safe and Explosion-Proof Installation for Model 5081-T-FI ... DISPLAY AND OPERATION ...
  • Page 4 MODEL 5081-T PROGRAMMING... General ... Output ... Temp ... Display ... HART ... Setup Cust ... Range ... Default... OUNDATION FIELDBUS OPERATION ... OPERATION WITH MODEL 375... Note on Model 375 or 275 Communicator ... Connecting the Communicator ... Operation ...
  • Page 5 Configuring Model 5081-T Transmitter with Foundation Fieldbus ... AMS Main Menu Tools ... Mounting the Model 5081-T Transmitter on a Flat Surface ... Using the Pipe Mounting Kit to Attach the Model 5081-T to a pipe ... Load/Power Supply Wiring Requirements... Model 5081-T-HT Power Wiring Details ...
  • Page 6 Menu Tree for Model 5081-T-HT ... Menu Tree for Model 5081-T-FF ... Menu Tree ... Current Output Calibration ... Functional Block Diagram for the Model 5081-T with F Connecting the HART Communicator ... 5081-T-HT HART/Model 375 Menu Tree... 5081-T-FF/FI Model 375 Menu Tree ...

  • Page 7: Description And Specifications

    • BUILT-IN PERCENT CONCENTRATION CURVES INCLUDE 0-15% NaOH, 0-16% HCl, 0-30% and 96-99.7% H 1.1 FEATURES AND APPLICATIONS The Model 5081-T can be used to measure conductivity in a variety of process liquids. The 5081 is compatible with most Rosemount Analytical sensors. See the Specifications section for details.

  • Page 8: Specifications

    MODEL 5081-T 1.2 SPECIFICATIONS 1.2.1 GENERAL SPECIFICATIONS Enclosure: Cast aluminum containing less than 6% mag- nesium, with epoxy polyester coating. NEMA 4X (IP65) and NEMA 7B. Neoprene O-ring cover seals. Dimensions: See drawing. Conduit Openings: ¾-in. FNPT Ambient Temperature: -4 to 149°F (-20 to 65°C) Storage Temperature: -22 to 176°F (-30 to 80°C)

  • Page 9: Hazardous Location Approval

    Clean-In-Place (CIP) Model 226 Submersion/Insertion Model 228 Submersion/Insertion/Retractable Model 242* Flow-Through *no I.S. approval for loops of 5081-T with 242-06 or 242-08 RECOMMENDED RANGES FOR TOROIDAL SENSORS Conductivity Sensor Model Number Nominal Cell Constant Minimum Conductivity (µ µ S/cm) Maximum Conductivity (µ µ S/cm) * Model 242 values depend on sensor configuration and wiring.

  • Page 10: Transmitter Display During Calibration And Programming

    MODEL 5081-T 1.4 TRANSMITTER DISPLAY DURING CALIBRATION AND PROGRAMMING (FIGURE 1-1) 1. Continuous display of conductivity or resistivity readings. 2. Units: µS/cm, mS/cm, ppm, or %. 3. Current menu section appears here. 4. Submenus, prompts, and diagnostic readings appear hear.

  • Page 11: Hart Communications

    See Figure 1-3. If your communicator does not recognize the Model 5081-T transmitter, the device description library may need updating. Call the manufacturer of your HART communication device for updates.

  • Page 12: Foundation Fieldbus

    FIELDBUS OUNDATION Figure 1-4 shows a 5081-T-FF being used to measure conductivity. The figure also shows three ways in which Fieldbus communication can be used to read process variables and configure the transmitter. FIGURE 1-4. CONFIGURING MODEL 5081-T TRANSMITTER WITH F...

  • Page 13: Ams Main Menu Tools

    MODEL 5081-T SECTION 1.0 DESCRIPTION AND SPECIFICATIONS FIGURE 1-5. AMS MAIN MENU TOOLS...

  • Page 14: Installation

    Consult the sensor instruction manual for maximum cable lengths. SECTION 2.0 INSTALLATION Unpacking and Inspection Orienting the Display Board Mechanical Installation Power Supply/Current Loop — Model 5081-T-HT Power Supply Wiring for Model 5081-T-FF/FI NOTE SECTION 2.0 INSTALLATION...
  • Page 15 MODEL 5081-T SECTION 2.0 INSTALLATION 2.3.2 Mounting on a Flat Surface. See Figure 2-1. MILLIMETER INCH FIGURE 2-1. Mounting the Model 5081-T Toroidal Conductivity Transmitter on a Flat Surface...
  • Page 16 See Figure 2-2. The pipe mounting kit (PN 2002577) accommodates 1-1/2 to 2 in. pipe. MILLIMETER INCH DWG. NO. REV. 40308104 DWG. NO. REV. 40308103 FIGURE 2-2. Using the Pipe Mounting Kit to Attach the Model 5081-T Conductivity Transmitter to a Pipe...
  • Page 17 All Rosemount Analytical contacting conductivity sensors with PT100 RTD or PT1000 RTD are compatible with the Model 5081-T transmitter. Please refer to Figures 3-5 thru 3-7 for appropriate sensor to transmitter wiring. The sensor cable should be routed through the left inlet closest to the connector.

  • Page 18: Power Supply/Current Loop Wiring For Model 5081-T-Ht

    See Section 3.0 for wiring instructions. See Section 8.4 or 10.6 and Section 12.0 for more information about sensor faults. FIGURE 2-3. Load/Power Supply Requirements FIGURE 2-4. Model 5081-T-HT Power Wiring Details SECTION 2.0 INSTALLATION...

  • Page 19: Power Supply Wiring For Model 5081-T-Ff/Fi

    AC power lines or with relay actu- ated signal cables. Keep power supply/signal wiring at least 6 ft (2 m) away from heavy electrical equipment. FIGURE 2-5. Typical Fieldbus Network Electrical FIGURE 2-6. Model 5081-T-FF Power Wiring Details 5081-T Transmitter Wiring Configuration 9 - 32 SECTION 2.0...

  • Page 20: Wiring

    MODEL 5081-T 3.1 SENSOR WIRING Wire sensor as shown below in Figure 3-1. Keep sensor wiring separate from power wiring. For best EMI/RFI protection, use shielded output signal cable in an earth-grounded metal conduit. Refer to the sensor instruction manual for more details.

  • Page 21: Power Supply/Current Loop Wiring For Model 5081-T-Ht

    Figure 3-2. For hazardous areas, please see hazardous area installation drawings. FIGURE 3-3. Power Supply/Current Loop Wiring for Model 5081-T-FF FIGURE 3-4. Power Supply and Sensor Wiring for Model 5081-T FIGURE 3-2. Power Supply/Current Loop Wiring for Model 5081-T-HT 3.1.3 POWER WIRING MODEL 5081-T-FF For general purpose areas, wire power as shown in Figure 3-3.

  • Page 22: Electrical Installation

    All Rosemount Analytical contacting conductivity sensors with PT100 RTD or PT1000 RTD are compatible with the Model 5081-T transmitter. Please refer to Figures 3-5 thru 3-7 for appropriate sensor to transmitter wiring. The sensor cable should be routed through the left inlet closest to the connector.
  • Page 23 MODEL 5081-T SECTION 3.0 WIRING FIGURE 3-6. Wiring Models 222, 225, 226, 228, 242, & 247 sensors to Model 5081-T transmitter...
  • Page 24 MODEL 5081-T SECTION 3.0 WIRING FIGURE 3-7. Wiring Models 222, 225, 226, & 228 sensors to Model 5081-T transmitter...

  • Page 25: Intrinsically Safe And Explosion Proof Installations

    D U R A C E L L M N 2 4 0 0 / P C 2 4 0 0 FIGURE 4-1. Model 5081-T-HT Infrared Remote Control — CSA, FM, & Baseefa/ATEX approvals R E M O T E C O N T R O L...

  • Page 26: Intrinsically Safe And Explosion-Proof Installation For Model 5081-T-Ht

    MODEL 5081-T SECTION 4.0 INTRINSICALLY SAFE & EXPLOSION PROOF 4.1 INTRINSICALLY SAFE AND EXPLOSION-PROOF INSTALLATION FOR MODEL 5081-T-HT...
  • Page 27 MODEL 5081-T SECTION 4.0 INTRINSICALLY SAFE & EXPLOSION PROOF...
  • Page 28 MODEL 5081-T SECTION 4.0 INTRINSICALLY SAFE & EXPLOSION PROOF...
  • Page 29 MODEL 5081-T SECTION 4.0 INTRINSICALLY SAFE & EXPLOSION PROOF...
  • Page 30 MODEL 5081-T SECTION 4.0 INTRINSICALLY SAFE & EXPLOSION PROOF...

  • Page 31: Intrinsically Safe And Explosion-Proof Installation For Model 5081-T-Ff

    MODEL 5081-T SECTION 4.0 INTRINSICALLY SAFE & EXPLOSION PROOF 4.2 INTRINSICALLY SAFE AND EXPLOSION-PROOF INSTALLATION FOR MODEL 5081-T-FF...
  • Page 32 MODEL 5081-T SECTION 4.0 INTRINSICALLY SAFE & EXPLOSION PROOF...
  • Page 33 MODEL 5081-T SECTION 4.0 INTRINSICALLY SAFE & EXPLOSION PROOF...
  • Page 34 MODEL 5081-T SECTION 4.0 INTRINSICALLY SAFE & EXPLOSION PROOF...
  • Page 35 MODEL 5081-T SECTION 4.0 INTRINSICALLY SAFE & EXPLOSION PROOF...

  • Page 36: Intrinsically Safe And Explosion-Proof Installation For Model 5081-T-Fi

    MODEL 5081-T 4.3 INTRINSICALLY SAFE AND EXPLOSION-PROOF INSTALLATION FOR MODEL 5081-T-FI 1400298 INTRINSICALLY SAFE & EXPLOSION PROOF SECTION 4.0...
  • Page 37 MODEL 5081-T SECTION 4.0 INTRINSICALLY SAFE & EXPLOSION PROOF...
  • Page 38 MODEL 5081-T SECTION 4.0 INTRINSICALLY SAFE & EXPLOSION PROOF 1400284...
  • Page 39 MODEL 5081-T SECTION 4.0 INTRINSICALLY SAFE & EXPLOSION PROOF...
  • Page 40 MODEL 5081-T SECTION 4.0 INTRINSICALLY SAFE & EXPLOSION PROOF 1400285 15 16...
  • Page 41 MODEL 5081-T SECTION 4.0 INTRINSICALLY SAFE & EXPLOSION PROOF 9241514 01...
  • Page 42 MODEL 5081-T SECTION 4.0 INTRINSICALLY SAFE & EXPLOSION PROOF 1400286 15 16...

  • Page 43: Display And Operation

    The program display screen appears when calibrating, programming, or reading diagnostic messages. SECTION 5.0 Displays Infrared Remote Controller (IRC) - Key Functions Quick Start for Model 5081-T-HT Quick Start for Model 5081-T-FF Menu Trees Diagnostic Messages Default Settings...

  • Page 44: Infrared Remote Controller (Irc) - Key Functions

    MODEL 5081-T 5.2 INFRARED REMOTE CONTROLLER (IRC) - KEY FUNCTIONS The infrared remote controller is used to calibrate and program the transmitter and to read diagnostic messages. See Figure 5-3 for a description of the function of the keys. RESET - Press to end the current oper- ation and return to the process display.

  • Page 45: Quick Start For Model 5081-T-Ht

    MODEL 5081-T 5.3 QUICK START FOR MODEL 5081-T-HT (HART) 1. On the Remote, press PROG, NEXT, NEXT, ENTER. 2. Use the arrow buttons to select COnduc (conductivity), nAOH (Sodium Hydroxide 0-15%), HCL (Hydrochloric Acid 0-16%), H2SO4L (Sulfuric Acid 0-30%), H2SO4H (Sulfuric Acid 96-99.7%), or CuSt (custom curve) mode.

  • Page 46: Quick Start For Model 5081-T-Ff/Fi

    MODEL 5081-T 5.4 QUICK START FOR MODEL 5081-T-FF/FI ( 1. On the Remote, press PROG, NEXT, ENTER. 2. Use the arrow buttons to select COnduc (conductivity), nAOH (Sodium Hydroxide 0-15%), HCL (Hydrochloric Acid 0- 16%), H2SO4L (Sulfuric Acid 0-30%), H2SO4H (Sulfuric Acid 95-99.99%), or CuSt (custom curve) mode. Press ENTER.

  • Page 47: Menu Tree

    The Model 5081-T transmitter has three menus: CALIBRATE, PROGRAM, and DIAGNOSE. Under the Calibrate and Program menus are several sub-menus. Figure 5-4 shows the complete menu tree for Model 5081-T-HT. Figure 5-5 shows the complete menu tree for Model 5081-T-FF.
  • Page 48 MODEL 5081-T Model 5081T-FF Process Display Screen '""" µS/cm 25.0C 12.00mA CAL key PROG key DIAG key HOLD key Process Display PROGRAM MENU MNEMONICS 9>U:>U Current output menu header &7- 4mA current output (setpoint) $"7- 20mA current output (setpoint) 4Q[G Current output on hold 2->[U...

  • Page 49: Diagnostic Messages

    (see Figure 5-2). The display alternates between the regular display and the diagnostic message. Figure 5-4 shows the diagnostic fault messages for conductivity for Model 5081-T-HT. Figure 5-4 shows the diagnostic fault mes- sages for conductivity for Model 5081-T-FF. If more than one warning or fault message has been generated, the mes- sages appear alternately.
  • Page 50 Diagnose (Each segment displays the current value in the transmitter.) Absolute conductivity Off Set Cell constant Temperature slope Software version Hardware version Show fault warnings TABLE 5-2. Default Settings for Model 5081-T-HT MNEMONIC 9VURVU &!O- $"!O- KQNG IDVNU UHTU UHOR...

  • Page 51: Security

    MODEL 5081-T 5.8 SECURITY 5.8.1 General. Use the programmable security code to protect program and calibration settings from accidentally being changed. The transmitter is shipped with the security fea- ture disabled. 5.8.2 Entering the Security Code. PROGRAM 1. If calibration and program settings are protected with a security code, pressing PROG """...

  • Page 52: Start-Up And Calibration

    MODEL 5081-T START-UP AND CALIBRATION 6.1 ACCESSING THE CALIBRATE MENU The “Calibrate” menu is used to calibrate the transmitter to known temperature and conductivity values. This menu also con- tains the temperature calibration operation to establish the temperature slope. Figure 6-1 illustrates the relationship between the Calibrate Menu and its sub-menus. Each sub-menu leads to a series of prompts that are used for calibration.

  • Page 53: Calibrate Menu

    MODEL 5081-T 6.2 CALIBRATE MENU To access the “Calibrate” menu, press the CAL key on the Infrared Remote Control. If security has been enabled, the secondary process display will be replaced with a prompt asking for the “Id”. Using the IRC editing keys, enter the “Id”. If the correct “Id”...

  • Page 54: Current Output Calibration

    MODEL 5081-T 6.2.5 Temp Slope 1. Press NEXT to enter the tEMP SLOPE menu. The correct temperature slope must be entered into the transmitter to ensure an acceptable process variable measure- ment under fluctuating process temperature conditions. Enter the slope in measured conductivity units per degree tem- perature change using the IRC’s arrow keys.

  • Page 55: Calibrate Menu Mnemonics

    MODEL 5081-T Calibrate menu header /-[5ES-U1 Sensor calibration Sub-menu header U17:!<[9:1 Sub-menu header -GM!<[9:1 Slope adjustment %/°C U<[9:1 Sub-menu header /1[[!/9P

  • Page 56: Programming

    1. assign values to the 4 and 20 mA outputs (for 5081-T-HT only) 2. set the current generated by the transmitter during hold (for 5081-T-HT only) 3. set the current generated by the transmitter when a fault is detected (for 5081-T-HT only) 4. enable and disable automatic temperature correction 5.

  • Page 57: Output

    MODEL 5081-T 7.2 OUTPUT (5081-HT only) 7.2.1 Purpose This section describes how to do the following: 1. assign values to the 4 and 20 mA outputs 2. set the output current generated during hold 3. set the output current generated when a fault is detected 4.
  • Page 58 MODEL 5081-T 7.2.3 Procedure PROGRAM 9VU:VU 1. Press PROG on the remote controller. The OutPut submenu appears. EXIT NEXT ENTER PROGRAM 2. Press ENTER. The screen displays the 4 MA prompt. Use the arrow keys to change &7- ""c"" EXIT...

  • Page 59: Temp

    MODEL 5081-T 7.3 TEMP 7.3.1 Purpose This section describes how to do the following: 1. Enable and disable automatic temperature compensation 2. Set a manual temperature compensation value for conductivity measurements 3. Tell the transmitter the type of temperature element in the sensor 7.3.2 Definitions...

  • Page 60: Display

    MODEL 5081-T 7.4 DISPLAY 7.4.1 Purpose This section describes how to do the following: 1. Configure the transmitter to measure conductivity, resistivity, or set up a custom curve 2. Set the temperature units to °C or °F 3. Set the output to current or percent of full scale 4.

  • Page 61: Hart

    MODEL 5081-T 7.5 HART In multi-drop operation, polling addresses can be more conveniently set and debugging more conveniently performed using the infrared remote controller. PROGRAM 4-SU EXIT NEXT ENTER - - G G G G S S H H T T T T "...

  • Page 62: Setup Cust

    MODEL 5081-T 7.6 SETUP CUST The Model 5081-T contains a curve fitting program that can create a second order curve for 3 to 5 user supplied data points. If only two points are entered, a straight line will be used.

  • Page 63: Range

    MODEL 5081-T 7.7 RANGE 7.7.1 Purpose This section provides the steps to select automatic ranging or a specific fixed range of measurement. Five specific con- ductance ranges are selectable. Setting the Model 5081 to a fixed range reduces response time.

  • Page 64: Foundation Fieldbus Operation

    Figure 8-1 illustrates how the pH/ORP signal is channelled through the transmitter to the control room and the Fieldbus configuration device. OUNDATION SENSOR FIGURE 8-1. Functional Block Diagram for the Model 5081-T-FF Conductivity Transmitter Software Functionality. The Model 5081-T software is designed to permit remote testing and configuration of the transmitter using the Fisher-Rosemount DeltaV Fieldbus...

  • Page 65: Operation With Model 375

    Note on Model 375 or 275 Communicator The Model 375 or 275 Communicator is a product of Emerson Process Management, Rosemount Inc. This section contains selected information on using the Model 375 or 275 with the Rosemount Analytical Model 5081-T-HT Transmitter.

  • Page 66: Operation

    4. To display the device ID, choose DevID. To change the polling address, choose PollAddrs. To make burst mode settings, choose Burst. To change the preamble count, choose Preamble. Fieldbus on Model 5081-T-FF. OUNDATION SECTION 9.0 OPERATION WITH MODEL 375...

  • Page 67: T-Ht Hart/Model 375 Menu Tree

    MODEL 5081-T -------------------------------------------------------------------------------- 5081-C/T 275, 375 Menu Tree for HART communications -------------------------------------------------------------------------------- Device setup Process variables Cond * Conductance Temp Temp res View status Diag/Service Test device Loop test View status Master reset Fault history Hold mode Calibration Calibrate sensor...
  • Page 68 MODEL 5081-T Basic setup (continued) Device information Distributor Model Dev id Date Physicl signl code Write protect Snsr text Descriptor Message Revision #'s Universal rev Fld dev rev Software rev Hardware rev Detailed setup Sensors Main sensor PV Type [Conductivity, Resistivity, 0-12% NaOH, 0-15% HCl, 0-25% H2SO4, 96-99.7% H2SO4,...
  • Page 69 MODEL 5081-T Diag override (continued) RTD fail [ON, OFF] Sense line open [ON, OFF] Temp high/low [ON, OFF] Signal condition AO Damp % rnge Xfer fnctn AO1 lo end point AO1 hi end pt Output condition Analog output AO Alrm typ...
  • Page 70 MODEL 5081-T Local Display AO LOI units [mA, %] Xmtr ID Load Default Conf. Review PV AO PV LRV PV URV -------------------------------------------------------------------------------- Notes: Can be Cond, Res, NaOH, HCl, H2SO4, or Custom Valid only when PV Type = NaOH, HCl, 0-25% H2SO4, or Custom...

  • Page 71: T-Ff/Fi Model 375 Menu Tree

    MODEL 5081-T 5081-C/T-FF/FI 375 Menu Tree ----------------------- RESOURCE Identification MANUFACT_ID DEV_TYPE DEV_REV DD_REV Characteristics Block Tag TAG_DESC Hardware Revision Software Revision String Private Label Distributor Final Assembly Number Output Board Serial Number ITK_VER Status BLOCK_ERR RS_STATE FAULT_STATE Summary Status MODE_BLK: Actual...
  • Page 72 MODEL 5081-T Transducer Error ST_REV BLOCK_ERR Additional transmitter status Fault history 0 Fault history 1 Fault history 2 Block Mode MODE_BLK: Actual MODE_BLK: Target MODE_BLK: Permitted STRATEGY ALERT_KEY Characteristics Block Tag TAG_DESC Measurements Prim Val Type Primary Val: Primary Val...
  • Page 73 MODEL 5081-T ALERT_KEY HI_HI_LIM HI_HI_PRI HI_LIM HI_PRI IO_OPTS L_TYPE LO_LO_LIM LO_LO_PRI LO_LIM LO_PRI MODE_BLK: Target MODE_BLK: Actual MODE_BLK: Permitted MODE_BLK: Normal OUT_SCALE: EU at 100% OUT_SCALE: EU at 0% OUT_SCALE: Units Index OUT_SCALE: Decimal PV_FTIME Advanced Config LOW_CUT SIMULATE: Simulate Status...
  • Page 74 MODEL 5081-T SIMULATE: Transducer Status SIMULATE: Transducer Value SIMULATE: Simulate En/Disable XD_SCALE: EU at 100% XD_SCALE: EU at 0% XD_SCALE: Units Index XD_SCALE: Decimal OUT_SCALE: EU at 100% OUT_SCALE: EU at 0% OUT_SCALE: Units Index OUT_SCALE: Decimal GRANT_DENY: Grant GRANT_DENY: Deny...
  • Page 75 MODEL 5081-T OUT_SCALE: EU at 0% OUT_SCALE: Units Index OUT_SCALE: Decimal PV_SCALE: EU at 100% PV_SCALE: EU at 0% PV_SCALE: Units Index PV_SCALE: Decimal RESET SP: Status SP: Value SP_HI_LIM SP_LO_LIM Common Config ALARM_HYS ALERT_KEY CONTROL_OPTS DV_HI_LIM DV_LO_LIM GAIN HI_HI_LIM...
  • Page 76 MODEL 5081-T Online BK_CAL_IN: Status BK_CAL_IN: Value BK_CAL_OUT: Status BK_CAL_OUT: Value BLOCK_ERR BYPASS CAS_IN: Status CAS_IN: Value FF_VAL: Status FF_VAL: Value GAIN IN: Status IN: Value MODE_BLK: Target MODE_BLK: Actual MODE_BLK: Permitted MODE_BLK: Normal OUT: Status OUT: Value PV: Status...
  • Page 77 MODEL 5081-T DV_HI_ALM: Time Stamp DV_HI_ALM: Subcode DV_HI_ALM: Float Value DV_LO_ALM: Unacknowledged DV_LO_ALM: Alarm State DV_LO_ALM: Time Stamp DV_LO_ALM: Subcode DV_LO_ALM: Float Value Bias Error SP Work SP FTime mathform structreconfig UGamma UBeta IDeadBand StdDev Cap StdDev Characteristics: Block Tag...
  • Page 78 MODEL 5081-T TRK_SCALE: Units Index TRK_SCALE: Decimal TRK_IN_D: Status TRK_IN_D: Value TRK_VAL: Status TRK_VAL: Value FF_VAL: Status FF_VAL: Value FF_SCALE: EU at 100% FF_SCALE: EU at 0% FF_SCALE: Units Index FF_SCALE: Decimal FF_GAIN UPDATE_EVT: Unacknowledged UPDATE_EVT: Update State UPDATE_EVT: Time Stamp...
  • Page 79 MODEL 5081-T StdDev Cap StdDev Scheduling Detail Physical Device Tag Address Device ID Device Revision Advanced Stack Capabilities FasArTypeAndRoleSupported MaxDIsapAddressesSupported MaxDIcepAddressesSupported DIcepDeliveryFeaturesSupported VersionOfNmSpecSupported AgentFunctionsSupported FmsFeaturesSupported Basic Characteristics Version BasicStatisticsSupportedFlag DIOperatFunctionalClass DIDeviceConformance Basic Info SlotTime PerDIpduPhIOverhead MaxResponseDelay ThisNode ThisLink MinInterPduDelay TimeSyncClass...
  • Page 80 MODEL 5081-T Normal Rcv SAP Las Time Available SAP Src Sink Normal SAP Src Sink Urgent SAP Src Sink Time Available Rcv SAP Src Sink Normal Rcv SAP Src Sink Urgent Rcv SAP Src Sink Sys Q Link Master Parameters...

  • Page 81: Diagnosis And Troubleshooting

    MODEL 5081-T DIAGNOSIS AND TROUBLESHOOTING 10.1 OVERVIEW The Model 5081-T transmitters automatically monitor for fault conditions. The Diagnose Menu allows the current variable set- tings to be reviewed and shows fault messages indicating prob- lems detected. Figure 10-1 illustrates the relationship between the Diagnose Menu and its sub-menus.

  • Page 82: Diagnostic Variables Mnemonics

    MODEL 5081-T TABLE 10-1. Diagnostic Variables Mnemonics -E< Absolute conductivity (µS/cm or mS/cm) "!DLS Sensor zero in air /1[[!/QPTU Sensor cell constant U<[9:1 Temperature slope in %/ °C TQIU Software version 4DSG Hardware version IDVNUT Show fault messages PQP1 No fault messages in memory SECTION 10.0...

  • Page 83: Fault Conditions

    MODEL 5081-T 10.2 FAULT CONDITIONS Three classes of error conditions/problems are detected and differentiated between by the diagnostic program. System disabling problems are faults caused by failures in the loop or significant variations in the process. System non-disabling problems are warnings and deal with input or A to D conversion settings.

  • Page 84: Diagnostic Messages

    MODEL 5081-T 10.3 DIAGNOSTIC MESSAGES The Model 5081-T transmitter’s diagnostics constantly monitor the conductivity loop for possible problems. If an opera- tional problem is encountered, check the display for a fault or error message. These are displayed in the Temperature/Current output segment of the display. Note the message and refer to Table 10-2 for a description of possi- ble problems that may have triggered the diagnostic message.

  • Page 85: Quick Troubleshooting Guide

    MODEL 5081-T 10.4 QUICK TROUBLESHOOTING GUIDE Table 10-3 identifies some of the more common symptoms and suggests actions to help resolve a problem. In general, wiring is the most common cause. SYMPTOM Wrong temperature reading. Suspected temp. compensation problem. Display segments missing. Display inoperable.

  • Page 86: Systematic Troubleshooting

    MODEL 5081-T 10.5 SYSTEMATIC TROUBLESHOOTING If the Quick Troubleshooting Guide does not resolve the error, try the step-by-step approach offered in Figure 10-4. Step 1 Follow the troubleshooting flow chart. Step 2 Refer to the tests and instructions indicated by the flow chart to diagnose the problem.

  • Page 87: Rtd Resistance Values

    MODEL 5081-T 10.6 RTD RESISTANCE VALUES Table 10-4 is a ready reference of RTD resistance values at various temperatures. These are used for test and evaluation of the sensor. NOTE Resistance values are read across the RTD element and are based on the manu- facturer ’s stated values (±1%).

  • Page 88: Warning And Fault Messages

    10.7 WARNING AND FAULT MESSAGES The Model 5081-T transmitter continuously monitors the sensor and transmitter for conditions that cause erroneous meas- urements. When a problem occurs, the transmitter displays either a warning or fault message. A warning alerts the user that a potentially disabling condition exists.

  • Page 89: Troubleshooting When A Fault Or Warning Message Is Showing

    MODEL 5081-T 10.8 TROUBLESHOOTING WHEN A FAULT OR WARNING MESSAGE IS SHOWING Message Explanation OuEr rAnGE Over range, measurement exceeds display limit SEnSor FAIL Bad sensor, sensor current is a large negative number CAL Error Calibration error, sensitivity (nA/ppm) is too high or too low...
  • Page 90 MODEL 5081-T 10.8.3 CAL Error At the end of the calibration step, the transmitter calculates the sensitivity in nA/ppm. If the sensitivity is outside the range normally expected, the transmitter displays the CAL Error message and the transmitter does not update the calibration.
  • Page 91 MODEL 5081-T 10.8.7 OFFSEt Err The OFFSEt Err message appears if the zero offset (in mV) exceeds the programmed limit. Before increasing the limit to make the OFFSEt Err message disappear, check the following: 1. Verify that the reference meter is working properly and is properly calibrated.

  • Page 92: Maintenance

    MODEL 5081-T 11.1 OVERVIEW Maintenance consists of "Preventative" and "Corrective" measures. 11.2 PREVENTATIVE MAINTENANCE 11.2.1 Transmitter Maintenance. Transmitter mainte- nance consists of periodic calibration. A monthly cali- bration is a good starting maintenance schedule. This schedule can then be fine tuned to the site process.
  • Page 93 * Weights are rounded up to the nearest whole pound or 0.5 kg. Description PCB stack for 5081-T-HT consisting of the CPU (part 3) and analog (part 4) boards, display board is not included, CPU and analog boards are factory-...

  • Page 94: Theory Of Operation

    MODEL 5081-T 12.1 OVERVIEW This section is a general description of how the Model 5081-T Transmitter operates. This section is for those users who desire a greater understanding of the trans- mitter’s operation. 12.2 CONDUCTIVITY The conductivity sensor produces a “conductance signal”...
  • Page 95 MODEL 5081-T 13.1 GENERAL. To expedite the repair and return of instruments, proper communication between the customer and the factory is important. Call 1-949-757-8500 for a R e t u r n Materials Authorization (RMA) number. 13.2 WARRANTY REPAIR. The following is the procedure for returning instru- ments still under warranty: Call Rosemount Analytical for authorization.
  • Page 96 This page intentionally left blank.

  • Page 97: Return Of Material

    Adherence to these procedures will expedite handling of the returned material and will prevent unnecessary additional charges 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. Emerson Process Management Liquid Division 2400 Barranca Parkway...
  • Page 98 The right people, the right answers, right now. Emerson Process Management Liquid Division 2400 Barranca Parkway Irvine, CA 92606 USA Tel: (949) 757-8500 Fax: (949) 474-7250 http://www.raihome.com © Rosemount Analytical Inc. 2006 ON-LINE ORDERING NOW AVAILABLE ON OUR WEB SITE Specifications subject to change without notice.

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