Troubleshooting
Procedure
1.
Navigate to the drive gain data:
• If you are using ProLink II, choose
ProLink→Diagnostic Information
.
• If you are using a Field Communicator, choose
3 Service Tools→4 Maintenance→5 Diagnostic
Variables
2.
Observe and record drive gain data over an appropriate period of time, under a variety of process
conditions.
10.26
Check the pickoff voltage
Collecting pickoff voltage data
To know whether your pickoff voltage is unusually low, you must collect pickoff voltage data during the
problem condition and compare it to pickoff voltage data from a period of normal operation.
Table 10-10
Possible causes and recommended actions for low pickoff voltage
Possible cause
Recommended actions
Faulty wiring runs between the sensor and transmitter
Verify wiring between sensor and transmitter.
Process flow rate beyond the limits of the sensor
Verify that the process flow rate is not out of range of
the sensor.
Slug flow
Check for slug flow. See Section 10.24.
No tube vibration in sensor
•
Check for plugging.
•
Ensure sensor is free to vibrate (no mechanical
binding).
•
Verify wiring.
•
Test coils at sensor. See Section 10.27.1.
Moisture in the sensor electronics
Eliminate the moisture in the sensor electronics.
The sensor is damaged
Contact Micro Motion.
10.26.1
Collect pickoff voltage data
Prerequisites
You will need either ProLink II or a Field Communicator to collect the pickoff voltage data.
Configuration and Use Manual
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