Instruction Manual PN 51-5081C/rev.
ESSENTIAL INSTRUCTIONS READ THIS PAGE BEFORE PROCEEDING! Rosemount Analytical designs, manufactures, and tests its products to meet many national and international standards. Because these instruments are sophisticated technical products, you must properly install, use, and maintain them to ensure they continue to operate within their normal specifications.
MODEL 5081-C TABLE OF CONTENTS MODEL 5081-C Tw O-w IRE TRANSMITTER TABLE OF CONTENTS Section 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 Title DESCRIPTION AND SPECIFICATIONS ................................................................ Features and Applications........................................................................................ Specifications........................................................................................................... Hazardous Location Approval ..............
MODEL 5081-C TABLE OF CONTENTS TABLE OF CONTENTS CONT’D 7.0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 PROGRAMMING..................................................................................................... General .................................................................................................................... o utput ...................................................................................................................... Temp ...................................................
MODEL 5081-C TABLE OF CONTENTS LIST OF FIGURES Number 1-1 1-2 1-3 1-4 1-5 2-1 2-2 2-3 2-4 2-5 2-6 3-1 3-2 3-3 3-4 3-5 3-6 3-7 3-8 3-9 4-1 4-2 4-3 4-4 4-5 4-6 4-7 4-8 4-9 4-10 4-11 4-12 4-13 5-1 5-2 5-3 5-4 5-5 6-1 6-2 8-1 Title Transmitter d isplay d uring Calibration and Programming ....................................... infrared Remote Controller....................................................................................... HART Communicator ....................................................
MODEL 5081-C TABLE OF CONTENTS LIST OF FIGURES - CONT’D Number 9-1 9-2 9-2 10-1 10-2 10-3 10-4 10-5 11-1 Title Connecting the HART Communicator ...................................................................... 5081-C-HT HART/Model 375 Menu Tree ................................................................. 5081-C-FF/Model 375 Menu Tree ............................................................................ d iagnose Menu Segments ..............................................................
MODEL 5081-C SECTION 1.0 DESCRIPTION AND SPECIFICATIONS SECTION 1.0 DESCRIPTION AND SPECIFICATIONS • CHo iCE o F Co MMu NiCATio N PRo To Co L: HART® or Fo u Nd ATio N Fieldbus. • LARGE, EASY-To -REAd two-line display shows the process measurement and temperature. • SiMPLE MENu STRu CTu RE. • Ro Bu ST NEMA 4X ENCLo Su RE. • iNTRiNSiCALLY SAFE d ESiGN allows the transmitter to be used in hazardous environments (with appropriate safety barriers).
MODEL 5081-C SECTION 1.0 DESCRIPTION AND SPECIFICATIONS 1.2 SPECIFICATIONS 1.2.1 GENERAL SPECIFICATIONS Housing: Cast aluminum with epoxy coating. NEMA 4X (iP65). Neoprene o -ring cover seals. Dimensions: 160.5 mm x 175.3 mm x 161.3 mm (6.3 in. x 6.9 in. x 6.4 in.) 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) Relative Humidity: 0 to 95% (non-condensing) w eight/Shipping w eight: 10 lb/10 lb (4.5/5.
MODEL 5081-C SECTION 1.0 DESCRIPTION AND SPECIFICATIONS 1.2.3 TRANSMITTER SPECIFICATIONS @ 25°C 1.3 HAz ARDOUS LOCATION APPROvAL Measured Range: 0-20,000 µS/cm Intrinsic Safety: Class i, ii, iii, d iv. 1 Groups A-G Accuracy: ± 0.5% of reading and ± 0.001 µS/cm Repeatability: ± 0.25% of reading T4 Stability: 0.25% of output range/month, non-cumulative Tamb = 70°C Ambient Temperature Coefficient: ± 0.
MODEL 5081-C 1.4 TRANSMITTER DISPLAy DURING CALIBRATION AND PROGRAMMING (FIGURE 1-1) 1. Continuous display of conductivity or resistivity readings. SECTION 1.0 DESCRIPTION AND SPECIFICATIONS 8 1 F A u L T 7 H o L d 2. u nits: µS/cm, mS/cm, ppm, or %. 3. Current menu section appears here. 6 4. Submenus, prompts, and diagnostic readings appear hear. 10.00 mS/cm 3 CALIBRATE PRo GRAM d iAGNo SE 5. Commands available in each submenu or at each prompt appear here. 6.
MODEL 5081-C SECTION 1.0 DESCRIPTION AND SPECIFICATIONS 1.6 HART COMMUNICATIONS 1.6.1 Ov ERv IEw OF HART COMMUNICATION HART (highway addressable remote transducer) is a digital communication system in which two frequencies are superimposed on the 4 to 20 mA output signal from the transmitter. A 1200 Hz sine wave represents the digit 1, and a 2400 Hz sine wave represents the digit 0. Because the average value of a sine wave is zero, the digital signal adds no dc component to the analog signal.
MODEL 5081-C SECTION 1.0 DESCRIPTION AND SPECIFICATIONS 1.7 FOUNDATION FIELDBUS Figure 1-4 shows a 5081-C-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-C TRANSMITTER w ITH FOUNDATION FIELDBUS 1.8 GENERAL SPECIFICATIONS Model: 5081-C-FF Fieldbus Transmitter Type: Contacting Conductivity Transmitter Device ITK Profile: 6 (Released for iTK 6.0.
MODEL 5081-C SECTION 1.0 DESCRIPTION AND SPECIFICATIONS FIGURE 1-5. AMS MAIN MENU TOOLS 1.9 ASSET MANAGEMENT SOLUTIONS Asset Management Solutions (AMS) is software that helps plant personnel better monitor the performance of analytical instruments, pressure and temperature transmitters, and control valves. Continuous monitoring means maintenance personnel can anticipate equipment failures and plan preventative measures before costly breakdown maintenance is required. AMS uses remote monitoring.
MODEL 5081-C SECTION 2.0 INSTALLATION SECTION 2.0 INSTALLATION 2.1 2.2 2.3 2.4 2.5 Unpacking and Inspection Orienting the Display Board Mechanical Installation Power Supply/Current Loop — Model 5081-C-HT Power Supply w iring for Model 5081-C-FF 2.1 UNPACKING AND INSPECTION inspect the shipping container. if it is damaged, contact the shipper immediately for instructions. Save the box. if there is no apparent damage, remove the transmitter. Be sure all items shown on the packing list are present.
MODEL 5081-C SECTION 2.0 INSTALLATION 2.3.2 Mounting on a Flat Surface. See Figure 2-1. MILLIMETER INCH FIGURE 2-1.
MODEL 5081-C SECTION 2.0 INSTALLATION 2.3.3 Pipe Mounting. See Figure 2-2. The pipe mounting kit (PN 2002577) accommodates 1-1/2 to 2 in. pipe. MILLIMETER INCH d WG. No . 40308104 REV. G d WG. No . 40308103 REV. C FIGURE 2-2.
MODEL 5081-C SECTION 2.0 INSTALLATION 2.3.4 Contacting Loops. The Model 5081-C conductivity transmitter is designed to make accurate measurements while in contact with the process stream. Measurements can also be tailored to high temperature and/or high pressure streams. 2.3.5 Sensor Selection. All Rosemount Analytical contacting conductivity sensors with PT100 RTd or PT1000 RTd are compatible with the Model 5081-C transmitter.
MODEL 5081-C 2.4 SECTION 2.0 INSTALLATION POw ER SUPPLy /CURRENT LOOP — MODEL 5081-C-HT 2.4.1 Power Supply and Load Requirements. Refer to Figure 2-3. The minimum power supply voltage is 12.5 Vdc and the maximum is 42.4 Vdc. The top line on the graph gives the voltage required to maintain at least 12.5 Vdc at the transmitter terminals when the output signal is 22 mA. The lower line is the supply voltage required to maintain a 30 Vdc terminal voltage when the output signal is 22 mA.
MODEL 5081-C 2.5 SECTION 2.0 INSTALLATION POw ER SUPPLy w IRING FOR MODEL 5081-C-FF 2.5.1 Power Supply w iring. Refer to Figure 2-5 and Figure 2-6. Run the power/signal wiring through the opening nearest terminals 15 and 16. u se shielded cable and ground the shield at the power supply. To ground the transmitter, attach the shield to the grounding screw on the inside of the transmitter case. A third wire can also be used to connect the transmitter case to earth ground.
MODEL 5081-C SECTION 3.0 w IRING SECTION 3.0 w IRING 3.1 3.2 Sensor w iring Electrical Installation 3.1 SENSOR w IRING 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.
MODEL 5081-C SECTION 3.0 w IRING 3.1.2 POw ER w IRING MODEL 5081-C-HT For general purpose areas, wire power as shown in Figure 3-2. For hazardous areas, please see hazardous area installation drawings. FIGURE 3-2. Power Supply/Current Loop w iring for Model 5081-C-HT 3.1.3 POw ER w IRING MODEL 5081-C-FF For general purpose areas, wire power as shown in Figure 3-3. For hazardous areas, please see hazardous area installation drawings. 9 - 32 FIGURE 3-3.
MODEL 5081-C SECTION 3.0 w IRING 3.2 ELECTRICAL INSTALLATION All Rosemount Analytical contacting conductivity sensors with PT100 RTd or PT1000 RTd are compatible with the Model 5081-C transmitter. Please refer to Figures 3-5 thru 3-9 for appropriate sensor to transmitter wiring. The sensor cable should be routed through the left inlet closest to the connector.
MODEL 5081-C SECTION 3.0 w IRING FIGURE 3-6. Model 5081-C with j -Box — 140 Series Sensor w iring Details FIGURE 3-7.
MODEL 5081-C SECTION 3.0 w IRING FIGURE 3-8. Model 5081-C with Contacting Conductivity Sensor FIGURE 3-9.
MODEL 5081-C SECTION 4.0 INTRINSICALLy SAFE & Ex PLOSION PROOF SECTION 4.0 INTRINSICALLy SAFE & Ex PLOSION PROOF 4.1 INTRINSICALLy SAFE AND Ex PLOSION-PROOF INSTALLATIONS FOR MODEL 5081-C-HT For CSA, FM, & Baseefa/ATEX approvals for the infrared Remote Control, see Figure 4-1 (below). For FMRC Explosion-Proof installation, see Figure 4-3. For FM intrinsically Safe Label, see Figure 4-4. For FM intrinsically Safe installation, see Figure 4-5. For CSA instrinsically Safe Label, see Figure 4-6.
FIGURE 4-3. FMRC Explosion-Proof Installation for Model 5081-C-HT MODEL 5081-C 20 SECTION 4.
SECTION 4.0 INTRINSICALLy SAFE & Ex PLOSION PROOF FIGURE 4-4.
FIGURE 4-5. FM Intrinsically Safe Installation for Model 5081-C-HT MODEL 5081-C 22 SECTION 4.
SECTION 4.0 INTRINSICALLy SAFE & Ex PLOSION PROOF FIGURE 4-6.
FIGURE 4-7. CSA Intrinsically Safe Installation for Model 5081-C-HT MODEL 5081-C 24 SECTION 4.
SECTION 4.0 INTRINSICALLy SAFE & Ex PLOSION PROOF FIGURE 4-8.
FIGURE 4-9. ATEx Intrinsically Safe Installation for Model 5081-C-HT MODEL 5081-C 26 SECTION 4.
FIGURE 4-10. FM Intrinsically Safe Installation for Model 5081-C-FF MODEL 5081-C SECTION 4.
SECTION 4.0 INTRINSICALLy SAFE & Ex PLOSION PROOF FIGURE 4-11.
FIGURE 4-12. CSA Intrinsically Safe Installation for Model 5081-C-FF MODEL 5081-C SECTION 4.
SECTION 4.0 INTRINSICALLy SAFE & Ex PLOSION PROOF FIGURE 4-13.
MODEL 5081-C SECTION 4.0 INTRINSICALLy SAFE & Ex PLOSION PROOF SECTION 5.0 DISPLAy AND OPERATION 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 Displays Infrared Remote Controller (IRC) - Key Functions Quick Start for Model 5081-C-HT Quick Start for Model 5081-C-FF Menu Trees Diagnostic Messages Default Settings Security Using Hold 5.1 DISPLAy S Figure 5-1 shows the process display screen, and Figure 5-2 shows the program display screen. Conductivity value 10.00 mS/cm Temperature in °C or °F FIGURE 5-1.
MODEL 5081-C SECTION 5.0 DISPLAy AND OPERATION 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 operation and return to the process display. Changes will No T be saved. RESET does not return the transmitter to factory default settings.
MODEL 5081-C SECTION 5.0 DISPLAy AND OPERATION 5.3 QUICK START FOR MODEL 5081-C-HT (HART) 1. o n the Remote, press PRo G, NEXT, NEXT, ENTER. 2. u se the arrow buttons to select COnduc (conductivity), rStvty (resistivity), or CuSt (custom curve) mode. Press ENTER. if you chose ConduC or rStvty , go to step 4. 3. if you selected CuST, you will see the Setup Custom screen. To move to the custom curve configuration menu, press ENTER.
MODEL 5081-C SECTION 5.0 DISPLAy AND OPERATION 5.4 QUICK START FOR MODEL 5081-C-FF (FOUNDATION FIELDBUS) 1. o n the Remote, press PRo G, NEXT, ENTER. 2. u se the arrow buttons to select COnduc (conductivity), rStvty (resistivity), or CuSt (custom curve) mode. Press ENTER. if you chose ConduC or rStvty , go to step 4. 3. if you selected CuST, you will see the Setup Custom screen. To move to the custom curve configuration menu, press ENTER.
MODEL 5081-C SECTION 5.0 DISPLAy AND OPERATION 5.5 MENU TREE - Conductivity The Model 5081-C pH transmitter has three menus: CALiBRATE, PRo GRAM, and d iAGNo SE. u nder the Calibrate and Program menus are several sub-menus. Figure 5-4 shows the complete menu tree for Model 5081-C-HT. Figure 5-5 shows the complete menu tree for Model 5081-C-FF. FIGURE 5-4. Menu Tree for Model 5081-C-HT Model 5081C-HT Process d isplay Screen CALIbrAtE SEnSOr 0 5000 CALIBRATION µS/cm 25.0C 12.
MODEL 5081-C SECTION 5.0 DISPLAy AND OPERATION Model 5081-C-FF Process d isplay Screen CALIbrAtE SEnSOr 0 5000 CALIBRATION µS/cm 25.0C tEMP AdJ Mtr CAL CELL COnSt CAL key PROG key DIAG key HOLD key tEMP SLOPE1 tEMP Process Display PROGRAM dISPLAY SEtUP CuST dEFAULT AbS C 0 air CELL COnSt DIAGNOSTICS tSLOPE1 CAL F 5081-C-Ff SoFt HArd FaULTs FIGURE 5-5.
MODEL 5081-C SECTION 5.0 DISPLAy AND OPERATION 5.6 DIAGNOSTIC MESSAGES Whenever a warning or fault limit has been exceeded, the transmitter displays diagnostic messages to aid in troubleshooting. d iagnostic messages appear in the same area as the temperature/output readings in the process display screen (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-C-HT.
MODEL 5081-C SECTION 5.0 DISPLAy AND OPERATION TABLE 5-2. Default Settings for Model 5081-C-HT vARIABLE NAME MNEMONIC FACTORy SETTINGS CUSTOMER SETTINGS Output – ___________ 4 mA 4 mA 0 µS ___________ 20 mA 20 mA 20 mS ___________ Hold hold 21 mA ___________ Fault fault 22 mA ___________ d ampening dpn 0 samples/second ___________ Test test 04.00 mA ___________ Temperature temp Auto temperature compensation tauto on ___________ Manual temperature tman 25.
MODEL 5081-C SECTION 5.0 DISPLAy AND OPERATION 5.8 SECURITy 5.8.1 General. u se the programmable security code to protect program and calibration settings from accidentally being changed. The transmitter is shipped with the security feature disabled. To program a security code, refer to Section 8.6, d isplay u nits. 5.8.2 Entering the Security Code. PRo GRAM Id EXiT 000 ENTER 1.
MODEL 5081-C SECTION 5.0 DISPLAy AND OPERATION SECTION 6.0 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 contains 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.
MODEL 5081-C 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”. u sing the iRC editing keys, enter the “id”. if the correct “id” is entered, the CALibrAtE submenu will appear when ENTER is pressed. SECTION 6.
MODEL 5081-C SECTION 6.0 START-UP AND CALIBRATION 6.2.6 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 measurement under fluctuating process temperature conditions. Enter the slope in measured conductivity units per degree temperature change using the iRC’s arrow keys. Press ENTER to enter the slope into memory; then press EXiT to return to the main screen. 2.
MODEL 5081-C SECTION 7.0 PROGRAMMING SECTION 7.0 PROGRAMING 7.1 7.2 7.3 7.4 7.5 7.6 7.7 General Output Temp Display HART Setup Cust Default 7.1 GENERAL This section describes how to do the following: 1. assign values to the 4 and 20 mA outputs (for 5081-C-HT only) 2. set the current generated by the transmitter during hold (for 5081-C-HT only) 3. set the current generated by the transmitter when a fault is detected (for 5081-C-HT only) 4. change sensor diagnostic limits 5.
MODEL 5081-C SECTION 7.0 PROGRAMMING 7.2 OUTPUT 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. control the amount of dampening on the output signal 5. generate a test current. 7.2.2 Definitions 1. Cu RRENT o u TPu TS. The transmitter provides a continuous 4 - 20 mA output directly proportional to the conductivity or resistivity. 2.
MODEL 5081-C SECTION 7.0 PROGRAMMING 7.2.3 Procedure PRo GRAM OutPut EXiT 1. Press PRo G on the remote controller. The OutPut submenu appears. NEXT ENTER PRo GRAM 4MA 00.00 EXiT ENTER 2. Press ENTER. The screen displays the 4 MA prompt. u se the arrow keys to change the setting. Press ENTER to save. PRo GRAM 20MA 10.00 EXiT ENTER 3. The screen displays the 20 MA prompt. u se the arrow keys to change the setting. Press ENTER to save. PRo GRAM HoLd 21.
MODEL 5081-C SECTION 7.0 PROGRAMMING 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 1. Au To MATiC TEMPERATu RE Co MPENSATio N. Conductivity measurements are directly affected by temperature.
MODEL 5081-C SECTION 7.0 PROGRAMMING 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. Enter a security code. 7.4.2 Definitions 1. MEASu REMENT.
MODEL 5081-C SECTION 7.0 PROGRAMMING 7.5 HART in multi-drop operation, polling addresses can be more conveniently set and debugging more conveniently performed using the infrared remote controller. PRo GRAM 1. Press PRo G on the infrared remote controller. HArt EXiT NEXT ENTER Address00 EXiT NEXT PreAMb EXiT 05 NEXT ENTER NEXT ENTER burSt EXiT Id EXiT 48 ENTER Off 0000000 NEXT ENTER 2. Press NEXT until the screen at left appears. Press ENTER. 3. The HART menu tree is shown at left.
MODEL 5081-C SECTION 7.0 PROGRAMMING 7.6 Setup Cust The Model 5081-C 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. These points are from numerical data previously collected that is entered via the keypad. All data point must be approximately the same reference temperature.
MODEL 5081-C SECTION 7.0 PROGRAMMING 7.7 DEFAULT 7.7.1 Purpose This section describes how to erase ALL user-defined configuration settings and return the transmitter to factory default settings. All custom curve values and settings will be deleted. 7.7.2 Procedure 1. Press PRo G on the remote controller. PRo GRAM dISPLAY EXiT NEXT ENTER PRo GRAM tYPE EXiT 50 2. Press NEXT until the dEFAULt appears in the display. Press ENTER. 3. u se or to toggle between nO and yES.
MODEL 5081-C SECTION 8.0 FOUNDATION FIELDBUS OPERATION SECTION 8.0 FOUNDATION FIELDBUS OPERATION This section covers basic transmitter operation and software functionality. For detailed descriptions of the function blocks common to all Fieldbus devices, refer to Fisher-Rosemount Fieldbus Fo u Nd ATio N Function Blocks manual, publication number 00809-001-4783.
MODEL 5081-C SECTION 9.0 OPERATION w ITH MODEL 375 SECTION 9.0 OPERATION w ITH MODEL 375 9.1 Note on Model 375 or 475 Communicator The Model 375 or 475 Communicator is a product of Emerson Process Management, Rosemount inc. This section contains selected information on using the Model 375 or 475 with the Rosemount Analytical Model 5081-C-HT Transmitter. For complete information on the Model 375 or 475 Communicator, see the Model 375 or 475 instruction manual.
MODEL 5081-C SECTION 9.0 OPERATION w ITH MODEL 375 9.3 Operation 9.3.1 Off-line and On-line Operation The Model 375 Communicator features off-line and on-line communications. o n-line means the communicator is connected to the transmitter in the usual fashion. While the communicator is on line, the operator can view measurement data, change program settings, and read diagnostic messages. o ff-line means the communicator is not connected to the transmitter.
MODEL 5081-C SECTION 9.
MODEL 5081-C SECTION 9.0 OPERATION w ITH MODEL 375 Basic setup (continued) d evice information d istributor Model d ev id Tag d ate Physicl signl code Write protect Snsr text d escriptor Message Revision #'s u niversal rev Fld dev rev Software rev Hardware rev d etailed setup Sensors Main sensor PV Type [Conductivity, Resistivity, 0-12% Nao H, 0-15% HCl, 0-25% H2So 4, 96-99.
MODEL 5081-C SECTION 9.
MODEL 5081-C SECTION 9.0 OPERATION w ITH MODEL 375 Local d isplay Ao Lo i units [mA, %] Xmtr id Load d efault Conf. Review PV PV Ao PV LRV PV u RV -------------------------------------------------------------------------------Notes: * Can be Cond, Res, Nao H, HCl, H2So 4, or Custom ** Valid only when PV Type = Nao H, HCl, 0-25% H2So 4, or Custom *** Valid only when Temp comp type = Linear **** Valid only when PV Type = Custom *. Valid only when PV Sensor Type = Toroidal *..
MODEL 5081-C SECTION 9.
MODEL 5081-C SECTION 9.
MODEL 5081-C SECTION 9.
MODEL 5081-C SECTION 9.
MODEL 5081-C SECTION 9.
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MODEL 5081-C SECTION 9.
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MODEL 5081-C SECTION 9.
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MODEL 5081-C SECTION 10.0 DIAGNOSIS AND TROUBLESHOOTING SECTION 10.0 DIAGNOSIS AND TROUBLESHOOTING 10.1 Ov ERv IEw The Model 5081-C transmitters automatically monitor for fault conditions. The d iagnose Menu allows the current variable settings to be reviewed and shows fault messages indicating problems detected. Figure 10-1 illustrates the relationship between the d iagnose Menu and its sub-menus. The mnemonics are defined in Table 10-1. Step 3 10.1.
MODEL 5081-C SECTION 10.0 DIAGNOSIS AND TROUBLESHOOTING TABLE 10-1.
MODEL 5081-C SECTION 10.0 DIAGNOSIS AND TROUBLESHOOTING 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. The third class of detected problems are error messages and occur when the calibration limits are exceeded. 10.2.
MODEL 5081-C SECTION 10.0 DIAGNOSIS AND TROUBLESHOOTING 10.3 DIAGNOSTIC MESSAGES The Model 5081-C transmitters' diagnostics constantly monitor the conductivity loop for possible problems. if an operational 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 possible problems that may have triggered the diagnostic message. TABLE 10-2.
MODEL 5081-C SECTION 10.0 DIAGNOSIS AND TROUBLESHOOTING 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. TABLE 10-3. Quick Troubleshooting Guide. Sy MPTOM Wrong temperature reading. Suspected temp. compensation problem. ACTION d isplay segments missing. d isplay inoperable. Analyzer locks up; won't respond. Perform a temperature standardization. Verify sensor's RTd .
MODEL 5081-C SECTION 10.0 DIAGNOSIS AND TROUBLESHOOTING 10.5 Sy STEMATIC 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. NOTE: Before starting this procedure make sure that all wiring is correct.
MODEL 5081-C SECTION 10.0 DIAGNOSIS AND TROUBLESHOOTING 10.6 RTD RESISTANCE vALUES Table 10-4. 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. Temperature Pt-100 Pt-1000 (°C) Resistance (ohms) Resistance (ohms) 0 100.00 1000 10 103.90 1039 20 107.79 1078 25 109.62 1096 30 111.67 1117 40 115.54 1155 50 119.40 1194 60 123.24 1232 70 127.07 1271 80 130.89 1309 90 134.70 1347 100 138.
MODEL 5081-C SECTION 10.0 DIAGNOSIS AND TROUBLESHOOTING 10.7 w ARNING AND FAULT MESSAGES The Model 5081-A transmitter continuously monitors the sensor and transmitter for conditions that cause erroneous measurements. When a problem occurs, the transmitter displays either a warning or fault message. A warning alerts the user that a potentially disabling condition exists. There is a high probability that the measurement is in error. A fault alerts the user that a disabling condition exists.
MODEL 5081-C 10.8 SECTION 10.0 DIAGNOSIS AND TROUBLESHOOTING TROUBLESHOOTING w HEN A FAULT OR w ARNING MESSAGE IS SHOw ING Message Explanation See Section OuEr rAnGE o ver range, measurement exceeds display limit 10.8.1 SEnSor FAIL Bad sensor, sensor current is a large negative number 10.8.2 CAL Error Calibration error, sensitivity (nA/ppm) is too high or too low 10.8.3 nEEd 0 CAL Sensor needs re-zeroing, reading is too negative 10.8.4 rtd FAIL Bad temperature reading 10.8.
MODEL 5081-C SECTION 10.0 DIAGNOSIS AND TROUBLESHOOTING 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. For assistance, refer to the troubleshooting section specific for the sensor. 10.8.4 nEEd 0 CAL nEEd 0 CAL means that the concentration of the analyte is too negative. 1.
MODEL 5081-C SECTION 10.0 DIAGNOSIS AND TROUBLESHOOTING 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. 2. Verify that the process sensor is working. Check its response in a solution of known conductivity. 3.
MODEL 5081-C SECTION 11.0 MAINTENANCE SECTION 11.0 MAINTENANCE 11.1 Ov ERv IEw 11.3 CORRECTIv E MAINTENANCE Maintenance consists of "Preventative" and "Corrective" measures. Refer to Figure 11-2 and Figure 11-3 for an exploded view of the 5081-C Transmitters. 11.2 PREv ENTATIv E MAINTENANCE Tables 11-1 and 11-2 list suggested spare parts along with part numbers. Sales and service locations are located on the back pages of this manual. 11.2.1 Transmitter Maintenance.
MODEL 5081-C SECTION 11.0 MAINTENANCE TABLE 11-1.
MODEL 5081-C SECTION 12.0 THEORy OF OPERATION SECTION 12.0 THEORy OF OPERATION 12.1 Ov ERv IEw 12.4 OUTPUT LOGIC This section is a general description of how the Model 5081-C Transmitter operates. This section is for those users who desire a greater understanding of the transmitter’s operation. Normal transmitter operation specifies that the output tracks the process. However, the transmitter can be put into other modes of operation. 12.
MODEL 5081-C SECTION 13.0 RETURN OF MATERIAL SECTION 13.0 RETURN OF MATERIAL 13.1 GENERAL. 13.1 NON-w ARRANTy REPAIR. 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 Return Materials Authorization (RMA) number. The following is the procedure for returning for repair instruments that are no longer under warranty: 13.2 w ARRANTy REPAIR.
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w ARRANTy Goods 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 shipment by Seller. Consumables, pH electrodes, membranes, liquid junctions, electrolyte, o -rings, etc. are warranted to be free from defects in workmanship and material under normal use and service for a period of ninety (90) days from date of shipment by Seller.
The right people, the right answers, right now. ON-LINE ORDERING NOW AVAILABLE ON OUR WEB SITE http://www.raihome.com Specifications subject to change without notice. 8 Credit Cards for u .S. Purchases o nly. Emerson Process Management 2400 Barranca Parkway irvine, CA 92606 u SA Tel: (949) 757-8500 Fax: (949) 474-7250 http://www.raihome.com © Rosemount Analytical inc.
