Rosemount 3051S Series, Reference Manual

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116
Reference Manual
00809-0100-4803, Rev GA
Troubleshooting
September 2017
Troubleshooting
Symptom Corrective action
Low PV Reading or No
PV Reading
Feature board electronics
•
Check the sensor limits to ensure calibration adjustments are within the sensor range and that calibration is correct for
the pressure being applied.
•
Confirm the electronics housing is properly sealed against moisture.
•
If the feature board electronics are still not functioning properly, substitute new feature board electronics.
Flow configuration (fully compensated mass and energy flow feature board only)
•
Verify flow configuration is correct for current application.
Process temperature RTD input
•
Verify all wire terminations
•
Verify sensor is a Pt 100 RTD
•
Replace Pt 100 sensor
Sensor module
•
The sensor module is not field repairable and must be replaced if found to be defective. Check for obvious defects,
such as a punctured isolating diaphragm or fill fluid loss, and contact your nearest Emerson Service Center.
Sluggish Output
Response/Drift
Primary element
•
Check for restrictions at the primary element.
Impulse piping
•
Check for leaks or blockage.
•
Ensure blocking valves are fully open.
•
Check for sediment in the transmitter process flange.
•
Check for entrapped gas in liquid lines and for liquid in gas lines.
•
Ensure the density of fluid in impulse lines is unchanged.
•
Make sure process fluid has not frozen within the process flange.
Feature board electronics
•
Confirm damping is correctly set.
•
Confirm the electronics housing is properly sealed against moisture.
Sensor module
•
The sensor module is not field repairable and must be replaced if found to be defective. Check for obvious defects,
such as a punctured isolating diaphragm or fill fluid loss, and contact your nearest Emerson Process Management
Service Center.
•
Confirm the electronics housing is properly sealed against moisture.
Table 5-4. Unexpected Process Variable (PV) Readings