Emerson 3081 pH/ORP - Manual

Emerson 3081 pH/ORP

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Table of Contents:

  • Page 2 – ESSENTIAL INSTRUCTIONS; READ THIS PAGE BEFORE PROCEEDING!; representative for clarification.; CAUTION
  • Page 3 – WHAT YOU NEED TO KNOW; BEFORE INSTALLING AND WIRING A ROSEMOUNT ANALYTICAL; THE MODEL NUMBER OF THE SENSOR; Also note the model option string.; THE TYPE OF TEMPERATURE ELEMENT; Write the temperature element RTD here; Balco 3K
  • Page 4 – Write the preamplifier location here; CAN YOU USE THE QUICK START GUIDE; you are NOT using a HART communicator,; Base Model
  • Page 5 – QUICK START GUIDE FOR MODEL 3081pH/ORP; FIGURE 2
  • Page 6 – C different from the buffer, allow at least 20 min-; FIGURE 3
  • Page 7 – QUICK REFERENCE GUIDE
  • Page 8 – HART Communicator Fast Key Sequences; Technical Support Hotline:; DIAGNOSE; MENU; PROMPT; Menu Tree for pH
  • Page 9 – MICROPROCESSOR TRANSMITTER; TABLE OF CONTENTS; Section Title
  • Page 10 – TABLE OF CONTENTS CONT’D; ii
  • Page 11 – iii
  • Page 12 – iv; Number Title
  • Page 13 – TABLE OF CONTENTS - CONT’D
  • Page 15 – DESCRIPTION AND SPECIFICATIONS; Features; • CHANGING FROM pH TO ORP operation takes only seconds.; The Model 3081pH/ORP Transmitter; REMOTE COMMUNICATIONS:; Menu formats for calibration and programming
  • Page 16 – Year 2000 Compliance: Millennium Status
  • Page 17 – Power Supply and Load Requirements:; Hazardous Area Classification:; CENELEC: EEx ia IIC
  • Page 18 – ORDERING INFORMATION; The; MODEL; Continuously expandable
  • Page 19 – MODEL 3081 pH/ORP TRANSMITTER-SENSOR COMPATIBILITY CHART; see note
  • Page 20 – DESCRIPTION; ACCESSORIES
  • Page 21 – UNPACKING AND INSPECTION; INSTALLATION; Unpacking and Inspection
  • Page 22 – Changing Switch and Jumper Positions; Remove the three bolts holding the circuit board stack.
  • Page 24 – There are more jumpers on the CPU; ORIENTING THE DISPLAY BOARD; MECHANICAL INSTALLATION
  • Page 25 – NOTE
  • Page 28 – WIRING; GENERAL INFORMATION; General Information
  • Page 29 – WIRING DIAGRAMS FOR pH and ORP SENSORS
  • Page 32 – removing BNC and terminating cable. Wiring
  • Page 33 – and terminating cable. Wiring diagram for
  • Page 34 – Wiring directly to the transmitter.; Wiring through a sensor-mounted junction
  • Page 42 – SENSOR FLOW CHART
  • Page 45 – INTRINSICALLY SAFE & EXPLOSION PROOF; Intrinsically Safe Installations; FIGURE 4-1. Intrinsically Safe BASEEFA Model 3081 Label
  • Page 51 – OPERATION WITH REMOTE CONTROLLER; C A L I b r A t E; E X I T; Units of display; Displays; Temperature in °C or °F
  • Page 55 – I d
  • Page 56 – OPERATION WITH MODEL 275; FIGURE 6-1. Connecting the HART Communicator; For intrinsically safe CSA and FM
  • Page 57 – Operation; Menu Tree
  • Page 62 – CALIBRATION OF pH MEASUREMENTS; HoLd
  • Page 63 – tEMP AAdJ; TEMPERATURE CALIBRATION; b. the temperature measurement is suspected of being in error.; Enter the CALIBRATE menu by pressing CAL on the IRC. The; the; CALIbrAtE; Press ENTER to display the temperature editing prompt.; tEMP AdJ; To leave the CALIBRATE menu, press EXIT .
  • Page 65 – C A L bb F 11
  • Page 66 – MANUAL CALIBRATION
  • Page 68 – MAKING THE TRANSMITTER READING MATCH A SECOND pH; The transmitter converts the difference between the pH readings,; rOFFSt
  • Page 69 – Std
  • Page 70 – PROGRAMMING FOR pH MEASUREMENTS
  • Page 72 – rEF FAIL
  • Page 74 – DIAGNOSTIC PARAMETERS; This section describes how to do the following:; FIGURE 8-1. Suggested Glass Impedance Warning and Failure Limits
  • Page 75 – FIGURE 8-2. Suggested Warning and Failure Limits for Low
  • Page 76 – W J; O N
  • Page 77 – rFH; rWJH; rWJL; rFL
  • Page 78 – TEMPERATURE RELATED SETTINGS
  • Page 79 – tC; tAUtO; tMAn
  • Page 80 – OUtPUt; CODE; tYPE; d I S P L A Y
  • Page 81 – BUFFER CALIBRATION PARAMETERS
  • Page 82 – bAUtO; bUFFEr; t I M E
  • Page 83 – ISOPOTENTIAL PARAMETERS
  • Page 84 – Snr; I S O P O t n t A L; tCOEFF; I S O
  • Page 85 – S I M OO U t P U t; GENERATING A TEST CURRENT; Press NEXT until the; SIM OUtPUt; tESt; Press ENTER to start the test current.
  • Page 86 – CALIBRATION OF ORP MEASUREMENTS; To activate or deactivate Hold, do the following:; prompt appears in the display. Press; On; and; OFF
  • Page 87 – TEMPERATURE CALIBRATION
  • Page 88 – OrP; , press EXIT twice to return to the main display.; Press EXIT to return to the main display.; Preparation of ORP Standard Solutions
  • Page 89 – PROGRAMMING FOR ORP MEASUREMENTS
  • Page 92 – OutPut
  • Page 93 – DIAGNOSTIC PARAMETERS; FIGURE 10-1. Suggested Warning and Failure Limits
  • Page 94 – L O
  • Page 95 – w j
  • Page 96 – TEMPERATURE ELEMENT
  • Page 98 – GENERATING A TEST CURRENT; prompt appears. Use the editing keys to change the number to the
  • Page 99 – MAINTENANCE; TRANSMITTER MAINTENANCE
  • Page 100 – pH SENSOR MAINTENANCE
  • Page 101 – Rejuvenating Reference Electrodes; NOT BOILING; FIGURE 11-2. Checking the Potential of the Reference Electrode.
  • Page 102 – ORP SENSOR MAINTENANCE; Install the sensor in the process stream.
  • Page 103 – TROUBLESHOOTING; When a WARNING condition exists:; The main display remains stable it does not flash.; Annunciation
  • Page 104 – CALIBRATION ERRORS; Std Err; TROUBLESHOOTING WHEN A DIAGNOSTIC MESSAGE IS SHOWING; MESSAGE
  • Page 110 – If the measured resistances are acceptable, go to step C.; Temperature
  • Page 111 – LInE FAIL; If the message is still showing go to step B.; FIGURE 12-4. Temperature simulation into
  • Page 112 – If the diagnostic message remains, go to step C.; InPUt WArn
  • Page 113 – SLOPE Err LO
  • Page 114 – SLOPE Err HI
  • Page 116 – TROUBLESHOOTING WHEN NO DIAGNOSTIC MESSAGE IS SHOWING
  • Page 118 – pH Reading in Buffer Drifts During Manual Calibration
  • Page 119 – D. Check for extra ground connections or induced noise.
  • Page 120 – B. Be sure the HART load and voltage requirements are met.
  • Page 121 – 4 Transmitter Periodically Restarts Itself; B. If RTD wiring is correct and problems still persist.; SYSTEMATIC TROUBLESHOOTING
  • Page 122 – or Remote Junction Box
  • Page 124 – DISPLAYING DIAGNOSTIC VARIABLES
  • Page 125 – is working, it should accept the calibration.
  • Page 126 – FIGURE 12-9. Simulate pH through Model 381+ Sensor Preamplifier; Refer to Figure 12-9 for connections to the sensor.; InPut
  • Page 127 – THE WIRE TOUCH THE OUTSIDE OF THE BNC CONNECTOR.; pH Simulation When Preamplifier is in Sensor; FACTORY ASSISTANCE AND REPAIRS
  • Page 129 – MEASURING ELECTRODE; m) into the glass, the hydrated layer must be present; REFERENCE ELECTRODE
  • Page 130 – LIQUID JUNCTION POTENTIAL; the potential of the external reference electrode
  • Page 131 – the liquid junction potential.; GLASS ELECTRODE SLOPE
  • Page 132 – ISOPOTENTIAL pH
  • Page 133 – and the cell voltage is E; PREAMPLIFIERS; at the electrode and about
  • Page 134 – ORP MEASUREMENTS
  • Page 136 – RELATING CELL VOLTAGE TO ORP; Fe
  • Page 137 – INTERPRETING ORP MEASUREMENTS; Cr; FIGURE 14-6. ORP Measurement Interpretation; log; Sulfur dioxide added
  • Page 140 – THEORY - REMOTE COMMUNICATIONS; Overview of HART Communications
  • Page 141 – ASSET MANAGEMENT SOLUTIONS; Fieldbus, which allows future upgrades to Fieldbus instruments.
  • Page 142 – GLOSSARY
  • Page 148 – RETURN OF MATERIAL; Call Rosemount Analytical for authorization.
  • Page 149 – The shipping container should be marked:
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Model 3081 pH/ORP

Smart Two-Wire Microprocessor Transmitter

Instruction Manual

PN 51-3081pH/rev.D
August 2002

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Summary

Page 2 - ESSENTIAL INSTRUCTIONS; READ THIS PAGE BEFORE PROCEEDING!; representative for clarification.; CAUTION

ESSENTIAL INSTRUCTIONS READ THIS PAGE BEFORE PROCEEDING! Rosemount Analytical designs, manufactures, and tests its products to meetmany national and international standards. Because these instruments aresophisticated technical products, you must properly install, use, and maintainthem to ensure they...

Page 3 - WHAT YOU NEED TO KNOW; BEFORE INSTALLING AND WIRING A ROSEMOUNT ANALYTICAL; THE MODEL NUMBER OF THE SENSOR; Also note the model option string.; THE TYPE OF TEMPERATURE ELEMENT; Write the temperature element RTD here; Balco 3K

WHAT YOU NEED TO KNOW BEFORE INSTALLING AND WIRING A ROSEMOUNT ANALYTICAL SENSOR TO THE MODEL 3081 pH/ORP TRANSMITTER 1. THE MODEL NUMBER OF THE SENSOR • Look on the label. • Also note the model option string. • If the label is missing or unreadable, see the flowcharts on pages 28 through 30. Write ...

Page 4 - Write the preamplifier location here; CAN YOU USE THE QUICK START GUIDE; you are NOT using a HART communicator,; Base Model

• If the sensor is wired directly to the transmitter, the preamplifier can be in either the sensor or the transmitter. • Look at the wires in the sensor cable. A GREEN wire means the preamplifier is in the sen- sor. An coaxial cable means the preamplifier is in the transmitter. A coaxial cable is an...

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