Display Units, Type, Code | Emerson Process Management 3081 pH/ORP

MODEL 3081 pH/ORP	SECTION 8.0
	PROGRAMMING FOR pH MEASUREMENTS

8.6 DISPLAY UNITS

PROGRAM

dISPLAY

EXIT NEXT ENTER

PROGRAM

tYPE		PH
EXIT			ENTER


PROGRAM
tEMP
tEMP		C
EXIT			ENTER


PROGRAM
OUtPUt
OUtPUt		CUR
EXIT			ENTER

8.6.1 Purpose

This section describes how to do the following:

1.switch the process display units between pH and ORP (millivolts),

2.select °C or °F for the temperature display,

3.select percent of full scale or milliamps for the output display,

4.program a security code.

8.6.2 Definitions

1.DISPLAY UNITS. Select pH if the transmitter is being used to measure pH. Select ORP if the transmitter is being used to measure ORP. ORP is oxidation-reduction potential. ORP has units of millivolts and is usually measured with an inert metal elec- trode, such as a platinum electrode. The units selected are shown in the main display next to the measured value.

2.OUTPUT CURRENT DISPLAY. The transmitter generates a 4 to 20 mA output signal directly proportional to the pH of the sample. The output signal appears on the same line with the temperature. The output signal can be displayed as current (in mA) or as percent of full scale.

3.SECURITY CODE. The security code unlocks the transmitter and allows complete access to all menus. The transmitter is shipped with the security code disabled.

8.6.3 Procedure

1. Press PROG on the infrared remote controller (IRC).

2. Press NEXT until the dISPLAY sub-menu appears. Press ENTER .

3. The screen displays the tYPE prompt. Press Ï or Ð to toggle between pH and OrP. Press ENTER to save.

4. The screen displays the tEMP prompt. Press Ï or Ð to toggle between C and F. Press ENTER to save.

5. The screen displays the OUtPUt prompt. Press Ï or Ð to toggle between % and CUR. Press ENTER to save.

PROGRAM

CODE

EXIT

000

ENTER

6. The screen displays the COdE prompt. Use the editing keys to enter a security code between 001 and 999. Entering 000 disables the security feature. Press ENTER to save. The security code does not become effective until about two minutes after the last keystroke.

7. Press EXIT to return to the process display.

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Emerson Process Management 3081 pH/ORP instruction manual Display Units, Type, Code

Contents

Model 3081 pH/ORP Essential Instructions What YOU Need to Know Use the Quick Start Guide if Base ModelRTD Preamplifier located Model Option note Quick Start Guide for Model 3081pH/ORP Output Optional WiringPower up and Calibration Automatic Buffer Calibration Standardizing to Match a Reference Instrument Calibrate Program Diagnose Menu Tree for pH Technical Support Hotline Table of Contents Model 3081 PH/ORP Microprocessor Transmitter Table of Contents CONT’D 13.0 11414.0 120 Table 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 Section Description and SpecificationsFeatures Model 275 Hart COMMUNICATOR. The Model AccessoriesYear 2000 Compliance Millennium Status Specifications -GENERAL for Model 3081 pH/ORP Intrinsic SafetyConduit Openings 3/4 in. Fnpt Hazardous Area Classification Explosion Proof PH Input Range 0 to 14 pH Specifications ORPOrdering Information Model 3081 pH/ORP TRANSMITTER-SENSOR Compatibility Chart Preamplifier LocationSensor-mounted Remote Model ORP MODEL/PN Description Shipping Weight Section Installation PRE-INSTALLATION Setup 2.2.1 Transmitter Default SettingsTemperature Element Unpacking and Inspection Changing Switch and Jumper Positions Preamplifier Location 40308110 Mechanical Installation 2.4.1 General information Orienting the Display Board Mounting on a Flat Surface. See Figure Mounting the Model 3081 pH/ORP Transmitter on a Flat Surface 40308103 Pipe Mounting Power Supply-Current Loop Wiring. Refer to Figure Power SUPPLY/CURRENT LoopPower Supply and Load Requirements. Refer to Figure General Information Section WiringGeneral Information Wiring Diagrams Wiring Diagrams for Model 396R Sensors Junction Box Wiring Diagrams for pH and ORP SensorsWire Function Wiring Diagram Wiring Diagrams for Model 396P Sensors Junction Box Wiring Diagrams for Model 389 Sensors Junction Box Wire Functions Wiring Diagram Wiring Diagrams for Model 385+ Sensors Junction BoxWire Functions 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 Section Intrinsically Safe & Explosion Proof Intrinsically Safe InstallationsExplosion Proof Installations Fmrc Installation for Model 3081 pH/ORP Transmitter Page CSA. forInstallation 3081Model TransmitterpH/ORPPage Page I T N E X T T E R Section Operation with Remote ControllerDisplays Infrared Remote Controller IRC KEY Functions Infrared Remote Controller Menu Tree for pH Diagnostic Messages ORP Menu Tree ORP Retrieving a Lost Security Code SecurityEntering the Security Code Connecting the Hart Communicator Operation Section Operation with Model Fast Key Sequences Off-line and On-line OperationMenu Tree Is on 2b. pH Menu Tree Hart 3a. ORP Menu Tree Hart 3b. ORP Menu Tree Hart Entering and Leaving the Calibrate Menu Using the Hold FunctionGeneral Temperature Calibration ProcedurePurpose TEMP AdJ Use of Calibration Standards buffers Auto CalibrationWhat Happens During Auto Calibration? CAL bF 10.00 Manual Calibration 10.00 What Happens During Standardization? Making the Transmitter Reading Match a Second pHMeter Standardization Std Slope Programming for pH Measurements Entering and Leaving the Program Menu PH Settings List Mnemonic Display Limits Factory Settings User Settings Output Ranging Definitions 4MA Diagnostic Parameters Suggested Glass Impedance Warning and Failure Limits Section GFH GwjhGwjl GFL RFH RWJHRWJL RFL Temperature Related Settings TEMP TAUtOTMAn TC 1 Display Units DISPLAYTYPE Code Buffer Calibration Parameters M E BUFFErBAUtO Isopotential Parameters Snr ISOPOtntALTCOEFF 000 TESt Generating a Test CurrentSIM OUtPUt Section Calibration of ORP Measurements TEMP AdJ 25.0 Preparation of ORP Standard Solutions Std Section Programming for ORP Measurements ORP Settings LIst Mnemonic Display Factory User Limits Settings Program Level Output Ranging 20MA 400 Diagnostic Parameters DIAGnOSTIC RWJH Temperature Element Definition Display Units Generating a Test Current Overview Section MaintenanceTransmitter Maintenance PH Sensor Maintenance Frequency of CleaningCleaning Procedures Problem Cleaning Suggestions Checking the Reference Electrode Rejuvenating Reference Electrodes Calibration Frequency ORP Sensor Maintenance 11.4.1 Frequency of CleaningCalibration 11.5.1 General Factory Assistance and Repairs Section TroubleshootingTesting the Transmitter by Simulating pH Message Section Calibration ErrorsTroubleshooting is easy as 1, 2 Troubleshooting Flowchart Glassfail Glassfail Slope Condition of Sensor Troubleshooting Flowchart GLASSWArn Slope Status of SensorGLASSWArn REF Fail Troubleshooting Flowchart rEF Fail Troubleshooting Flowchart rEF WArn Troubleshooting Flowchart- tEMP HI and tEMP LOREFWArn CALIbrAtE Three-wire RTD RTD Resistance Values Temperature 3K Balco Troubleshooting Flowchart- LInE Fail LInE Fail Troubleshooting Flowchart-InPUt WArn InPUt WArn Troubleshooting Flowchart-SLOPE Err LO Slope Err LO Troubleshooting Flowchart-SLOPE Err HI Troubleshooting Flowchart-Std ErrSlope Err HI Std Err Troubleshooting-AdC WArn or CyCLE PWr Troubleshooting-WritE ErrROM Fail or CPU Fail AdC WArn or CyCLE PWr 102 Symptom SectionFACt Fail 12.5.1 Id 000 in Display 103 104 PH Reading in Buffer Drifts During Manual CalibrationSensor Does Not Respond To Known pH Changes 105 Temperature Reading Is Inaccurate Hart Communications ProblemsNo Display Display Segments Missing Replace the display board PN 106 12 .13 Transmitter Locks Up 12 .14 Transmitter Periodically Restarts Itself YES OK? Diagnostic Messages Testing the Transmitter by Simulating the pHDiagnostic Measurements Voltage mV 111 PH Simulation with the Model 381+ Sensor Simulate pH through Model 381+ Sensor Preamplifier 112 Return of Materials PH Simulation When Preamplifier is in SensorTroubleshooting Assistance PH Measurements 115 Measuring ElectrodeReference Electrode Liquid Junction Potential 116 Glass Electrode Slope Buffers and CalibrationTemp C Slope mV/unit pH 117 Junction Potential Mismatch 118 119 Sensor DiagnosticsSHIELDS, INSULATION, and Preamplifiers Section ORP Measurements General Measuring Electrode Reference ElectrodeLiquid Junction Potential 121 122 Relating Cell Voltage to ORP14.6 ORP, CONCENTRATION, and pH 123 Interpreting ORP MeasurementsORP,mV VI,Chromiumppm Sulfur dioxide added Calibration 124 125 Hart Interface Devices Section Theory Remote CommunicationsOverview of Hart Communication Asset Management Solutions AMS Main Menu Tools 127 Section Glossary Term Definition 129 Hart 130 ORP 131 RTD 132 133 Section Return of Material Warranty RepairNON-WARRANTY Repair Warranty Return of Material ON-LINE Ordering NOW Available on OUR WEB Site