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Model CX-DM
Table of Contents
1.
Introduction ..................................................................................................................................................1
1.1
Description .......................................................................................................................................... 1
1.2
Modular Design .................................................................................................................................. 2
2.
Installation ....................................................................................................................................................3
2.1
Hazardous Locations Installation Guidelines for Safe Use ................................................................. 3
2.2
Sensor Placement ................................................................................................................................ 4
2.3
Sensor Contaminants and Interference ............................................................................................... 5
2.4
Sensor Mounting ................................................................................................................................. 5
2.5
Electrical Installation .......................................................................................................................... 6
2.6
Field Wiring ........................................................................................................................................ 7
2.6.1
Terminal Connections 3-Wire 4-20mA .......................................................................................... 7
2.6.2
Terminal Connections 4-20mA and RS-485 .................................................................................. 8
2.7
Initial Start Up..................................................................................................................................... 9
2.7.1
O
2
Deficiency Sensors .................................................................................................................. 10
3.
Operation ....................................................................................................................................................11
3.1
Operator Interface ............................................................................................................................. 12
3.2
Normal Operation ............................................................................................................................. 13
3.3
Calibration Mode .............................................................................................................................. 13
3.3.1
AutoZero ....................................................................................................................................... 14
3.3.2
AutoSpan ...................................................................................................................................... 15
3.4
Program Mode .................................................................................................................................. 17
3.4.1
View Sensor Status ....................................................................................................................... 17
3.4.2
Set Detection Range ..................................................................................................................... 18
3.4.3
Set AutoSpan Level ...................................................................................................................... 18
3.4.4
Bump Test .................................................................................................................................... 18
3.4.5
Restore Defaults ........................................................................................................................... 19
3.4.6
Set Modbus ID .............................................................................................................................. 19
3.5
Fault Diagnostic/Failsafe Feature ..................................................................................................... 20
4.
Modbus™ Communications .......................................................................................................................21
4.1
General Modbus™ Description ........................................................................................................ 21
4.2
Modbus™ Register Map & Description ........................................................................................... 21
4.2.1
Sensor Faults – Register 40005 .................................................................................................... 22
4.2.2
Temperature Compensation – Register 40012 ............................................................................. 23
5.
Service and Maintenance ............................................................................................................................24
5.1
Replacement of Plug-in Sensor ......................................................................................................... 24
5.2
Replacement of ITM – Aluminum J-Box ......................................................................................... 25
5.3
Replacement of ITM – Stainless Steel Mini Condulet...................................................................... 25
6.
Troubleshooting Guide ...............................................................................................................................27
6.1
Under-Range problems ..................................................................................................................... 27
6.2
Stability problems ............................................................................................................................. 27
6.3
Clearing problem .............................................................................................................................. 27
6.4
Poor Calibration Repeatability .......................................................................................................... 28
6.5
Unstable Output/ sudden spiking ...................................................................................................... 28
6.6
Nuisance Alarms ............................................................................................................................... 28
6.7
Intelligent Transmitter Module (ITM) not responding ..................................................................... 28
7.
Customer Support and Service Policy ........................................................................................................29
7.1
Warranty Notice ................................................................................................................................ 29
7.2
CX-DM Sensor Warranty ................................................................................................................. 30
8.
Appendix ....................................................................................................................................................31
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