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Emerson Process Management
3081 pH/ORP
instruction manual
Sensor Flow Chart
Models:
3081 pH/ORP
1
44
150
150
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150 pages
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Troubleshooting
Specifications
Install
Wire Function Wiring Diagram
Calibration Errors
Wiring
Warranty
Maintenance
Problem Cleaning Suggestions
Diagnostic Messages ORP
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MODEL 3081 pH/ORP
SECTION 3.0
WIRING
SENSOR FLOW CHART
30
Page 43
Page 45
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Contents
Model 3081 pH/ORP
Essential Instructions
What YOU Need to Know
Use the Quick Start Guide if
Base Model
RTD
Preamplifier located Model Option note
Quick Start Guide for Model 3081pH/ORP
Output Optional
Wiring
Power 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
114
14.0
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 Specifications
Features
Model 275 Hart COMMUNICATOR. The Model
Accessories
Year 2000 Compliance Millennium Status
Specifications -GENERAL for Model 3081 pH/ORP
Intrinsic Safety
Conduit Openings 3/4 in. Fnpt
Hazardous Area Classification Explosion Proof
PH Input Range 0 to 14 pH
Specifications ORP
Ordering Information
Model 3081 pH/ORP TRANSMITTER-SENSOR Compatibility Chart
Preamplifier Location
Sensor-mounted Remote
Model ORP
MODEL/PN Description Shipping Weight
Section Installation
PRE-INSTALLATION Setup 2.2.1 Transmitter Default Settings
Temperature 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 Loop
Power Supply and Load Requirements. Refer to Figure
General Information
Section Wiring
General Information Wiring Diagrams
Wiring Diagrams for Model 396R Sensors Junction Box
Wiring Diagrams for pH and ORP Sensors
Wire 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 Box
Wire 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 Installations
Explosion Proof Installations
Fmrc Installation for Model 3081 pH/ORP Transmitter
Page
CSA. forInstallation
3081Model TransmitterpH/ORP
Page
Page
I T N E X T T E R
Section Operation with Remote Controller
Displays
Infrared Remote Controller IRC KEY Functions
Infrared Remote Controller
Menu Tree for pH
Diagnostic Messages ORP
Menu Tree ORP
Retrieving a Lost Security Code
Security
Entering the Security Code
Connecting the Hart Communicator Operation
Section Operation with Model
Fast Key Sequences
Off-line and On-line Operation
Menu 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 Function
General
Temperature Calibration
Procedure
Purpose
TEMP AdJ
Use of Calibration Standards buffers
Auto Calibration
What Happens During Auto Calibration?
CAL bF
10.00
Manual Calibration
10.00
What Happens During Standardization?
Making the Transmitter Reading Match a Second pH
Meter 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
Gwjh
Gwjl
GFL
RFH
RWJH
RWJL
RFL
Temperature Related Settings
TEMP
TAUtO
TMAn
TC 1
Display Units
DISPLAY
TYPE
Code
Buffer Calibration Parameters
M E
BUFFEr
BAUtO
Isopotential Parameters
Snr
ISOPOtntAL
TCOEFF 000
TESt
Generating a Test Current
SIM 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 Maintenance
Transmitter Maintenance
PH Sensor Maintenance
Frequency of Cleaning
Cleaning Procedures
Problem Cleaning Suggestions
Checking the Reference Electrode
Rejuvenating Reference Electrodes
Calibration Frequency
ORP Sensor Maintenance 11.4.1 Frequency of Cleaning
Calibration 11.5.1 General
Factory Assistance and Repairs
Section Troubleshooting
Testing the Transmitter by Simulating pH
Message Section
Calibration Errors
Troubleshooting is easy as 1, 2
Troubleshooting Flowchart Glassfail
Glassfail
Slope Condition of Sensor
Troubleshooting Flowchart GLASSWArn
Slope Status of Sensor
GLASSWArn
REF Fail
Troubleshooting Flowchart rEF Fail
Troubleshooting Flowchart rEF WArn
Troubleshooting Flowchart- tEMP HI and tEMP LO
REFWArn
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 Err
Slope Err HI
Std Err
Troubleshooting-AdC WArn or CyCLE PWr
Troubleshooting-WritE Err
ROM Fail or CPU Fail
AdC WArn or CyCLE PWr
102
Symptom Section
FACt Fail
12.5.1 Id 000 in Display
103
104
PH Reading in Buffer Drifts During Manual Calibration
Sensor Does Not Respond To Known pH Changes
105
Temperature Reading Is Inaccurate
Hart Communications Problems
No 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 pH
Diagnostic 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 Sensor
Troubleshooting Assistance
PH Measurements
115
Measuring Electrode
Reference Electrode
Liquid Junction Potential
116
Glass Electrode Slope
Buffers and Calibration
Temp C Slope mV/unit pH
117
Junction Potential Mismatch
118
119
Sensor Diagnostics
SHIELDS, INSULATION, and Preamplifiers
Section ORP Measurements
General
Measuring Electrode
Reference Electrode
Liquid Junction Potential
121
122
Relating Cell Voltage to ORP
14.6 ORP, CONCENTRATION, and pH
123
Interpreting ORP Measurements
ORP,mV VI,Chromiumppm Sulfur dioxide added
Calibration
124
125
Hart Interface Devices
Section Theory Remote Communications
Overview 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 Repair
NON-WARRANTY Repair
Warranty
Return of Material
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