Emerson Process Management 3081 pH/ORP MODEL 3081 PH/ORP MICROPROCESSOR TRANSMITTER

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MODEL3081 pH/ORP TABLE OF CONTENTS
MODEL 3081 PH/ORP
MICROPROCESSOR TRANSMITTER
TABLE OF CONTENTS
Section Title Page
1.0 DESCRIPTION AND SPECIFICATIONS ................................................................ 1
1.1 Features................................................................................................................... 1
1.2 Accessories.............................................................................................................. 2
1.3 Specifications - General for Model 3081 pH/ORP.................................................... 3
1.4 Specifications - pH................................................................................................... 4
1.5 Specifications - ORP................................................................................................ 4
1.6 Ordering Information ............................................................................................... 4
2.0 INSTALLATION....................................................................................................... 7
2.1 Unpacking and Inspection........................................................................................ 7
2.2 Pre-Installation Set Up............................................................................................. 7
2.3 Orienting the Display Board..................................................................................... 10
2.4 Mechanical Installation............................................................................................. 10
2.5 Power Supply/Current Loop..................................................................................... 13
3.0 WIRING.................................................................................................................... 14
3.1 General Information................................................................................................. 14
3.2 Wiring Diagrams for pH and ORPSensors .............................................................. 15
4.0 INTRINSICALLYSAFE AND EXPLOSION PROOF ............................................... 31
4.1 Intrinsically Safe Installations................................................................................... 31
4.2 Explosion Proof Installations.................................................................................... 31
5.0 OPERATION WITH REMOTE CONTROLLER....................................................... 37
5.1 Displays ................................................................................................................... 37
5.2 Infrared Remote Controller (IRC)............................................................................. 38
5.3 Menu Tree - pH........................................................................................................ 39
5.4 Diagnostic Messages - pH....................................................................................... 39
5.5 Menu Tree - ORP..................................................................................................... 40
5.6 Diagnostic Messages - ORP.................................................................................... 40
5.7 Security.................................................................................................................... 41
6.0 OPERATION WITH MODEL275 ............................................................................. 42
6.1 Note on Model 275 HARTCommunicator................................................................ 42
6.2 Connecting the HARTCommunicator ...................................................................... 42
6.3 Operation................................................................................................................. 43
7.0 CALIBRATION OF pH MEASUREMENTS............................................................. 48
7.1 General.................................................................................................................... 48
7.2 Entering and Leaving the Calibrate Menu................................................................ 48
7.3 Using the Hold Function........................................................................................... 48
7.4 Temperature Calibration........................................................................................... 49
7.5 Auto Calibration....................................................................................................... 50
7.6 Manual Calibration................................................................................................... 52
7.7 Making the Transmitter Reading Match a Second pH Meter (Standardization)....... 54