Emerson Micro Motion 1000 Series

Configuration and Use Manual 143
Troubleshooting
Measurement Performance TroubleshootingCustody TransferCompensation Measurement Performance TroubleshootingCustody TransferCompensation Measurement Performance TroubleshootingCustody TransferCompensation Measurement Performance TroubleshootingCustody TransferCompensation
Erratic non-zero flow rate when flow
is steady
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.
Inappropriate measurement unit Check configuration. See
Section 12.20.
Inappropriate damping value Check damping configuration.
Excessive or erratic drive gain See Section 12.25.3 and
Section 12.25.4.
Slug flow See Section 12.17.
Plugged flow tube Check drive gain and tube frequency.
Purge the flow tubes or replace the
sensor.
Wiring problem Verify all sensor-to-transmitter wiring
and ensure the wires are making good
contact.
Inaccurate flow rate or batch total Bad flow calibration factor Verify characterization. See
Section 6.2.
Inappropriate measurement unit Check configuration. See
Section 12.20.
Bad sensor zero Rezero the meter. See Section 5.5.
Bad density calibration factors Verify characterization. See
Section 6.2.
Bad flowmeter grounding See Section 12.14.3.
Slug flow See Section 12.17.
Problem with receiving device See Section 12.16.
Wiring problem Verify all sensor-to-transmitter wiring
and ensure the wires are making good
contact.
Inaccurate density reading Problem with process fluid Use standard procedures to check
quality of process fluid.
Bad density calibration factors Verify characterization. See
Section 6.2.
Wiring problem Verify all sensor-to-transmitter wiring
and ensure the wires are making good
contact.
Bad flowmeter grounding See Section 12.14.3.
Slug flow See Section 12.17.
Sensor cross-talk Check environment for sensor with
similar (±0.5 Hz) tube frequency.
Plugged flow tube Check drive gain and tube frequency.
Purge the flow tubes or replace the
sensor.
Table 12-6 Process variables problems and possible remedies continued
Symptom Cause Possible remedy