Emerson Rosemount CT4400 Reference Manual page 82

Troubleshooting and diagnostics
January 2020
7.5.4 Single gas reading invalid
Potential cause
Gas reading invalid
Recommended actions
1. Check which gas.
2. Check fault readings.
3. Fault reading active.
4. Use Fault to access further diagnostic information
5. Contact (cascade.support@emerson.com).
Potential cause
Gas reading invalid
Recommended action
1. Check which gas.
2. Check fault readings.
3. Fault reading not displayed.
4. Contact (cascade.support@emerson.com).
7.5.5 Analysis cell pressure out of range
Potential cause
Pressure was out of range.
Recommended action
1. Adjust inlet valve to change pressure.
2. Pressure returns to normal.
3. No further action required.
Potential cause
Pressure was out of range.
Recommended action
1. Adjust inlet valve to change pressure.
2. If pressure is unstable or impossible to adjust.
3. Contact (cascade.support@emerson.com).
7.5.6 Sensor frozen or unresponsive
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Reference Manual
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Rosemount CT4400