Emerson Micro Motion 1600 - Page 216

Table 16-6: Process variables problems and remedies (continued)
Symptom Cause Suggested remedy
Erratic non-zero flow rate
under no-flow conditions
Leaking valve or seal Check pipeline
Slug flow See Check for two-phase flow (slug flow).
Plugged flow tube Check drive gain and tube frequency.
Purge the flow tubes.
Incorrect sensor orientation Sensor orientation must be appropriate to the
process fluid. See the installation manual for
your sensor.
Wiring problem Check the sensor circuitry. See Check for
internal electrical problems.
Vibration in pipeline at rate close to
sensor tube frequency
Check the environment and remove the source
of the vibration.
Damping value too low Check the configuration.
See the appropriate section:
• Configure Flow Damping
• Configure Density Damping
• Configure Temperature Damping
Mounting stress on sensor Check the sensor mounting to ensure:
• Sensor is not being used to support the
pipe
• Sensor is not being used to correct pipe
misalignment
• Sensor is not too heavy for pipe
Sensor cross-talk Check the environment for sensor with a
similiar (±0.5 Hz) tube frequency.
Erratic non-zero flow rate
when flow is steady
Slug flow See Check for two-phase flow (slug flow).
Damping value too low Check the configuration. See Characterize the
meter (if required).
Plugged flow tube • Check drive gain and tube frequency.
• Purge the flow tubes.
Excessive or erratic drive gain See Check the drive gain.
Output wiring problem Verify wiring between transmitter and
receiving device. See the installation manual
for your transmitter.
Problem with receiving device Test with another receiving device.
Wiring problem Check the sensor circuitry. See Check for
internal electrical problems.
Troubleshooting Configuration and Use Manual
May2024 MS-00809-0200-1600
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