3. Perform a new Zero and Span calibration to ensure calibration factors are correct.
4. Readings return to normal.
5. Sensor required calibration.
Potential cause
Gas reading abnormal
Recommended action
1. Check measurement validity flag.
2. Reading valid.
3. Perform a new Zero and Span calibration to ensure calibration factors are correct.
4. Abnormal readings persist.
5. Cause Unknown.
6. Contact (
Related information
Measurement invalid flag.
7.5.2
Calibration/validation drift
Potential cause
Sensor reading invalid.
Recommended action
1. Check measurement validity flag.
2. Reading is invalid.
3. refer to Measurement invalid flag.
Potential cause
Sensor required calibration.
Recommended action
1. Check measurement validity flag.
2. Reading is valid.
3. Perform a new Zero and Span calibration to ensure calibration factors are correct.
4. Readings return to normal.
5. Sensor required calibration.
Potential cause
Sensor does not require calibration.
Recommended action
1. Check measurement validity flag.
2. Reading is valid.
Reference Manual
Troubleshooting and diagnostics
00809-0100-4244
January 2020
Reference Manual
79
Summary of Contents for Rosemount CT4400
Page 1: ...Reference Manual 00809 0100 4244 Rev AA January 2020 Rosemount CT4400 Continuous Gas Analyzer ...
Page 32: ...Start up procedure Reference Manual January 2020 00809 0100 4244 32 Rosemount CT4400 ...
Page 40: ...Operating the analyzer Reference Manual January 2020 00809 0100 4244 40 Rosemount CT4400 ...
Page 64: ...Gas calibration Reference Manual January 2020 00809 0100 4244 64 Rosemount CT4400 ...
Page 96: ...Shutdown procedure Reference Manual January 2020 00809 0100 4244 96 Rosemount CT4400 ...
Page 98: ...Preventative maintenance Reference Manual January 2020 00809 0100 4244 98 Rosemount CT4400 ...
Page 100: ...Recommended spare parts Reference Manual January 2020 00809 0100 4244 100 Rosemount CT4400 ...
Page 105: ......