Rosemount 6888Xi - Page 6

Table of Contents Reference Manual
January 2019 00809-0100-4892
3.7 Parameter Setup ........................................................................................................48
3.7.1 Test Gas Values .............................................................................................48
3
.7.2
T
est 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 Table of Contents