Collect Drive Gain Data; Check The Pickoff Voltage - Emerson Micro Motion SGM Series Configuration And Use Manual

Table 14-11:
drive gain
Possible cause
Drive board or module failure
Vibrating element not free to
vibrate
Open drive coil
Incorrect sensor characteriza-
tion
Erratic drive gain
Table 14-12:
Possible cause
Foreign material caught on vi-
brating element or in sensor
14.22.2

Collect drive gain data

Drive gain data can be used to diagnose a variety of process and equipment conditions.
Collect drive gain data from a period of normal operation, and use this data as a baseline
for troubleshooting.
1.
2.
14.23

Check the pickoff voltage

If the pickoff voltage readings are unusually low, you may have any of a variety of process
or equipment problems.
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.
Configuration and Use Manual
Possible causes and recommended actions for excessive (saturated)
(continued)
Possible causes and recommended actions for erratic drive gain
Navigate to the drive gain data.
Observe and record drive gain data over an appropriate period of time, under a
variety of process conditions.
Recommended actions
Contact Micro Motion.
Ensure that the vibrating element is free to vibrate.
Contact Micro Motion.
Verify the characterization or calibration parameters.
Recommended actions
Ensure that the vibrating element is free to vibrate.
Troubleshooting
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