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Emerson Process Management 3081 pH/ORP Section Intrinsically Safe & Explosion Proof

Models: 3081 pH/ORP

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MODEL 3081 pH/ORP	SECTION 4.0
	INTRINSICALLY SAFE & EXPLOSION PROOF

SECTION 4.0

INTRINSICALLY SAFE & EXPLOSION PROOF

4.1Intrinsically Safe Installations

4.2Explosion Proof Installations

4.1INTRINSICALLY SAFE INSTALLATIONS

The installation wiring, operating parameters, or agency tags for intrinsically safe operation are given in Figures 4-1, 4-2, and 4-3.

4.2EXPLOSION PROOF INSTALLATIONS

The installation wiring and operating parameters for explosion proof operation are given in Figure 4-4.

FIGURE 4-1. Intrinsically Safe BASEEFA Model 3081 Label

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Emerson Process Management 3081 pH/ORP Section Intrinsically Safe & Explosion Proof, Intrinsically Safe Installations

Contents

Model 3081 pH/ORP Essential Instructions What YOU Need to Know Base Model Use the Quick Start Guide ifRTD Preamplifier located Model Option noteQuick Start Guide for Model 3081pH/ORP Wiring Power up and CalibrationOutput Optional Standardizing to Match a Reference Instrument Automatic Buffer CalibrationMenu Tree for pH Technical Support Hotline Calibrate Program DiagnoseModel 3081 PH/ORP Microprocessor Transmitter Table of ContentsTable of Contents CONT’D 114 13.014.0 120Table of Contents CONT’D List of Figures Table of Contents CONT’D List of Figures CONT’D Table of Contents CONT’D List of Tables Description and Specifications FeaturesSection Accessories Year 2000 Compliance Millennium StatusModel 275 Hart COMMUNICATOR. The Model Intrinsic Safety Specifications -GENERAL for Model 3081 pH/ORPConduit Openings 3/4 in. Fnpt Hazardous Area Classification Explosion ProofSpecifications ORP Ordering InformationPH Input Range 0 to 14 pH Preamplifier Location Model 3081 pH/ORP TRANSMITTER-SENSOR Compatibility ChartSensor-mounted Remote Model ORPMODEL/PN Description Shipping Weight PRE-INSTALLATION Setup 2.2.1 Transmitter Default Settings Section InstallationTemperature Element Unpacking and InspectionPreamplifier Location Changing Switch and Jumper Positions40308110 Orienting the Display Board Mechanical Installation 2.4.1 General informationMounting the Model 3081 pH/ORP Transmitter on a Flat Surface Mounting on a Flat Surface. See FigurePipe Mounting 40308103Power SUPPLY/CURRENT Loop Power Supply and Load Requirements. Refer to FigurePower Supply-Current Loop Wiring. Refer to Figure Section Wiring General Information Wiring DiagramsGeneral Information Wiring Diagrams for pH and ORP Sensors Wire Function Wiring DiagramWiring Diagrams for Model 396R Sensors Junction Box Wiring Diagrams for Model 389 Sensors Junction Box Wiring Diagrams for Model 396P Sensors Junction BoxWiring Diagrams for Model 385+ Sensors Junction Box Wire FunctionsWire Functions Wiring Diagram Jumpers Supplied by Customer Section Section Section 15. Wire functions for Model 385+ 17. Wire functions for Model 328A-07 19. Wiring diagram for Model 320HP-10-55 21. Wire Functions for Model Section 24. Preparation of Raw Connecting Cable PN Sensor Flow Chart on Sensor Flow Chart on Sensor Flow Chart Intrinsically Safe Installations Explosion Proof InstallationsSection Intrinsically Safe & Explosion Proof Fmrc Installation for Model 3081 pH/ORP Transmitter Page 3081Model TransmitterpH/ORP CSA. forInstallationPage Page Section Operation with Remote Controller DisplaysI T N E X T T E R Infrared Remote Controller Infrared Remote Controller IRC KEY FunctionsMenu Tree for pH Menu Tree ORP Diagnostic Messages ORPSecurity Entering the Security CodeRetrieving a Lost Security Code Section Operation with Model Connecting the Hart Communicator OperationOff-line and On-line Operation Menu TreeFast Key Sequences Is on 2b. pH Menu Tree Hart 3a. ORP Menu Tree Hart 3b. ORP Menu Tree Hart Using the Hold Function GeneralEntering and Leaving the Calibrate Menu Procedure Temperature CalibrationPurpose TEMP AdJAuto Calibration What Happens During Auto Calibration?Use of Calibration Standards buffers 10.00 CAL bFManual Calibration 10.00 Making the Transmitter Reading Match a Second pH Meter StandardizationWhat Happens During Standardization? Slope StdEntering and Leaving the Program Menu Programming for pH MeasurementsMnemonic Display Limits Factory Settings User Settings PH Settings ListDefinitions Output Ranging4MA Suggested Glass Impedance Warning and Failure Limits Diagnostic ParametersSection Gwjh GFHGwjl GFLRWJH RFHRWJL RFLTemperature Related Settings TAUtO TEMPTMAn TC 1DISPLAY Display UnitsTYPE CodeBuffer Calibration Parameters BUFFEr BAUtOM E Isopotential Parameters ISOPOtntAL TCOEFF 000Snr Generating a Test Current SIM OUtPUtTESt Section Calibration of ORP Measurements 25.0 TEMP AdJStd Preparation of ORP Standard SolutionsSection Programming for ORP Measurements Mnemonic Display Factory User Limits Settings Program Level ORP Settings LIstOutput Ranging 20MA 400 Diagnostic Parameters DIAGnOSTIC RWJH Definition Temperature ElementDisplay Units Generating a Test Current Section Maintenance Transmitter MaintenanceOverview Frequency of Cleaning PH Sensor MaintenanceCleaning Procedures Problem Cleaning SuggestionsRejuvenating Reference Electrodes Checking the Reference ElectrodeORP Sensor Maintenance 11.4.1 Frequency of Cleaning Calibration 11.5.1 GeneralCalibration Frequency Section Troubleshooting Testing the Transmitter by Simulating pHFactory Assistance and Repairs Calibration Errors Troubleshooting is easy as 1, 2Message Section Glassfail Troubleshooting Flowchart GlassfailSlope Condition of Sensor Slope Status of Sensor Troubleshooting Flowchart GLASSWArnGLASSWArn REF FailTroubleshooting Flowchart rEF Fail Troubleshooting Flowchart- tEMP HI and tEMP LO Troubleshooting Flowchart rEF WArnREFWArn CALIbrAtERTD Resistance Values Temperature 3K Balco Three-wire RTDLInE Fail Troubleshooting Flowchart- LInE FailInPUt WArn Troubleshooting Flowchart-InPUt WArnSlope Err LO Troubleshooting Flowchart-SLOPE Err LOTroubleshooting Flowchart-Std Err Troubleshooting Flowchart-SLOPE Err HISlope Err HI Std ErrTroubleshooting-WritE Err Troubleshooting-AdC WArn or CyCLE PWrROM Fail or CPU Fail AdC WArn or CyCLE PWrSymptom Section FACt Fail102 103 12.5.1 Id 000 in DisplayPH Reading in Buffer Drifts During Manual Calibration Sensor Does Not Respond To Known pH Changes104 105 Hart Communications Problems Temperature Reading Is InaccurateNo Display Display Segments Missing Replace the display board PN 10612 .14 Transmitter Periodically Restarts Itself 12 .13 Transmitter Locks UpYES OK? Testing the Transmitter by Simulating the pH Diagnostic MeasurementsDiagnostic Messages 111 Voltage mVSimulate pH through Model 381+ Sensor Preamplifier 112 PH Simulation with the Model 381+ SensorPH Simulation When Preamplifier is in Sensor Troubleshooting AssistanceReturn of Materials PH Measurements Measuring Electrode Reference Electrode115 116 Liquid Junction PotentialBuffers and Calibration Glass Electrode SlopeTemp C Slope mV/unit pH 117118 Junction Potential MismatchSensor Diagnostics SHIELDS, INSULATION, and Preamplifiers119 General Section ORP MeasurementsReference Electrode Measuring ElectrodeLiquid Junction Potential 121Relating Cell Voltage to ORP 14.6 ORP, CONCENTRATION, and pH122 Interpreting ORP Measurements ORP,mV VI,Chromiumppm Sulfur dioxide added123 124 Calibration125 Section Theory Remote Communications Overview of Hart CommunicationHart Interface Devices AMS Main Menu Tools 127 Asset Management SolutionsTerm Definition Section Glossary129 130 Hart131 ORP132 RTD133 Warranty Repair NON-WARRANTY RepairSection Return of Material Return of Material WarrantyON-LINE Ordering NOW Available on OUR WEB Site