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Emerson Process Management
3081 pH/ORP
instruction manual
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Models:
3081 pH/ORP
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Troubleshooting
Specs
Install
Wire Function Wiring Diagram
Calibration Errors
Wiring
Warranty
Maintenance
Problem Cleaning Suggestions
Diagnostic Messages ORP
Page 58
Image 58
MODEL 3081 pH/ORP
SECTION 6.0
OPERATION WITH MODEL 275
(Figure
6-2
is continued on page 41)
FIGURE
6-2a.
pH Menu Tree (HART)
44
Page 57
Page 59
Page 58
Image 58
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Page 59
Contents
Model 3081 pH/ORP
Essential Instructions
What YOU Need to Know
RTD
Use the Quick Start Guide if
Base Model
Preamplifier located Model Option note
Quick Start Guide for Model 3081pH/ORP
Power up and Calibration
Wiring
Output Optional
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
14.0
13.0
114
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
Features
Description and Specifications
Section
Year 2000 Compliance Millennium Status
Accessories
Model 275 Hart COMMUNICATOR. The Model
Conduit Openings 3/4 in. Fnpt
Specifications -GENERAL for Model 3081 pH/ORP
Intrinsic Safety
Hazardous Area Classification Explosion Proof
Ordering Information
Specifications ORP
PH Input Range 0 to 14 pH
Sensor-mounted Remote
Model 3081 pH/ORP TRANSMITTER-SENSOR Compatibility Chart
Preamplifier Location
Model ORP
MODEL/PN Description Shipping Weight
Temperature Element
Section Installation
PRE-INSTALLATION Setup 2.2.1 Transmitter Default Settings
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 and Load Requirements. Refer to Figure
Power SUPPLY/CURRENT Loop
Power Supply-Current Loop Wiring. Refer to Figure
General Information Wiring Diagrams
Section Wiring
General Information
Wire Function Wiring Diagram
Wiring Diagrams for pH and ORP Sensors
Wiring Diagrams for Model 396R Sensors Junction Box
Wiring Diagrams for Model 396P Sensors Junction Box
Wiring Diagrams for Model 389 Sensors Junction Box
Wire Functions
Wiring Diagrams for Model 385+ Sensors Junction Box
Wire 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
Explosion Proof Installations
Intrinsically Safe Installations
Section Intrinsically Safe & Explosion Proof
Fmrc Installation for Model 3081 pH/ORP Transmitter
Page
CSA. forInstallation
3081Model TransmitterpH/ORP
Page
Page
Displays
Section Operation with Remote Controller
I T N E X T T E R
Infrared Remote Controller IRC KEY Functions
Infrared Remote Controller
Menu Tree for pH
Diagnostic Messages ORP
Menu Tree ORP
Entering the Security Code
Security
Retrieving a Lost Security Code
Connecting the Hart Communicator Operation
Section Operation with Model
Menu Tree
Off-line and On-line Operation
Fast Key Sequences
Is on
2b. pH Menu Tree Hart
3a. ORP Menu Tree Hart
3b. ORP Menu Tree Hart
General
Using the Hold Function
Entering and Leaving the Calibrate Menu
Purpose
Temperature Calibration
Procedure
TEMP AdJ
What Happens During Auto Calibration?
Auto Calibration
Use of Calibration Standards buffers
CAL bF
10.00
Manual Calibration
10.00
Meter Standardization
Making the Transmitter Reading Match a Second pH
What Happens During 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
Gwjl
GFH
Gwjh
GFL
RWJL
RFH
RWJH
RFL
Temperature Related Settings
TMAn
TEMP
TAUtO
TC 1
TYPE
Display Units
DISPLAY
Code
Buffer Calibration Parameters
BAUtO
BUFFEr
M E
Isopotential Parameters
TCOEFF 000
ISOPOtntAL
Snr
SIM OUtPUt
Generating a Test Current
TESt
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
Transmitter Maintenance
Section Maintenance
Overview
Cleaning Procedures
PH Sensor Maintenance
Frequency of Cleaning
Problem Cleaning Suggestions
Checking the Reference Electrode
Rejuvenating Reference Electrodes
Calibration 11.5.1 General
ORP Sensor Maintenance 11.4.1 Frequency of Cleaning
Calibration Frequency
Testing the Transmitter by Simulating pH
Section Troubleshooting
Factory Assistance and Repairs
Troubleshooting is easy as 1, 2
Calibration Errors
Message Section
Troubleshooting Flowchart Glassfail
Glassfail
Slope Condition of Sensor
GLASSWArn
Troubleshooting Flowchart GLASSWArn
Slope Status of Sensor
REF Fail
Troubleshooting Flowchart rEF Fail
REFWArn
Troubleshooting Flowchart rEF WArn
Troubleshooting Flowchart- tEMP HI and tEMP LO
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
Slope Err HI
Troubleshooting Flowchart-SLOPE Err HI
Troubleshooting Flowchart-Std Err
Std Err
ROM Fail or CPU Fail
Troubleshooting-AdC WArn or CyCLE PWr
Troubleshooting-WritE Err
AdC WArn or CyCLE PWr
FACt Fail
Symptom Section
102
12.5.1 Id 000 in Display
103
Sensor Does Not Respond To Known pH Changes
PH Reading in Buffer Drifts During Manual Calibration
104
105
No Display
Temperature Reading Is Inaccurate
Hart Communications Problems
Display Segments Missing Replace the display board PN 106
12 .13 Transmitter Locks Up
12 .14 Transmitter Periodically Restarts Itself
YES
OK?
Diagnostic Measurements
Testing the Transmitter by Simulating the pH
Diagnostic Messages
Voltage mV
111
PH Simulation with the Model 381+ Sensor
Simulate pH through Model 381+ Sensor Preamplifier 112
Troubleshooting Assistance
PH Simulation When Preamplifier is in Sensor
Return of Materials
PH Measurements
Reference Electrode
Measuring Electrode
115
Liquid Junction Potential
116
Temp C Slope mV/unit pH
Glass Electrode Slope
Buffers and Calibration
117
Junction Potential Mismatch
118
SHIELDS, INSULATION, and Preamplifiers
Sensor Diagnostics
119
Section ORP Measurements
General
Liquid Junction Potential
Measuring Electrode
Reference Electrode
121
14.6 ORP, CONCENTRATION, and pH
Relating Cell Voltage to ORP
122
ORP,mV VI,Chromiumppm Sulfur dioxide added
Interpreting ORP Measurements
123
Calibration
124
125
Overview of Hart Communication
Section Theory Remote Communications
Hart Interface Devices
Asset Management Solutions
AMS Main Menu Tools 127
Section Glossary
Term Definition
129
Hart
130
ORP
131
RTD
132
133
NON-WARRANTY Repair
Warranty Repair
Section Return of Material
Warranty
Return of Material
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