Emerson 6888Xi Manuel D’Utilisation
Table of Contents
6888Xi Advanced Electronics Instruction Manual
December 2012
PN 51-6888Xi
3.7
Parameter Setup ........................................................................................................48
3.7.1
Test Gas Values..............................................................................................48
3.7.2
Test Gas Times...............................................................................................53
3.7.3
Output Tracking During Calibration ..............................................................54
3.7.4
Tolerance Check ............................................................................................54
3.7.5
Alarm Relay Output Configuration. ...............................................................55
3.7.6
Analog Output Configuration....................................................................... 57
3.7.7
Autocalibration............................................................................................. 58
3.7.8
Calibration Recommended Setup. ............................................................... 58
3.7.9
Calibration Acknowledged Setup. ................................................................ 59
3.7.10
Plug Diffuser Diagnostic. ...............................................................................59
3.7.11
Low Temperature Set Point. ..........................................................................61
3.8
Calibration - General ..................................................................................................62
3.8.1
General..........................................................................................................62
3.8.2
Calibration Procedure ...................................................................................62
3.8.3
Calibration Log ..............................................................................................67
3.8.4
Reset Calibration ...........................................................................................67
3.9
D/A Trim. ...................................................................................................................68
Section 4: Troubleshooting
4.1
Overview of Operating Principles ...............................................................................71
4.2
General.......................................................................................................................72
4.2.1
Grounding.....................................................................................................72
4.2
.2
Electrical Noise ..............................................................................................72
4.2.3
Electrostatic Discharge..................................................................................72
4.3
Alarm Indications .......................................................................................................72
4.4
Identifying and Correcting Fault Indications...............................................................73
4.5
Calibration Passes, But Still Reads Incorrectly .............................................................74
4.5.1
Probe Passes Calibration, O
2
Still Reads High ................................................75
4.5.2
Probe Passes Calibration, O
2
Still Reads Low..................................................76
4.5.3
How do I detect a plugged diffuser?..............................................................76
4.5.4
Can I calibrate a badly plugged diffuser? .......................................................76
Section 5: Maintenance and Service
5.1
Overview ....................................................................................................................79
5.2
Maintenance Intervals ................................................................................................79
5.3
Calibration..................................................................................................................80
5.3.1
Automatic Calibration ...................................................................................80
5.3.2
Manual Calibration ........................................................................................80
5.4
Replacement Parts .....................................................................................................81
5.5
6888Xi Components Replacement ............................................................................81
5.5.1
I/O Board Replacement .................................................................................81
IV
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