
Configuration and Use Manual
143
Troubleshooting
Meas
ure
m
ent P
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rf
ormance
T
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Custod
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rans
fer
Compensa
tion
Meas
ure
m
ent P
e
rf
ormance
T
rou
b
leshoo
tin
g
Custod
y T
rans
fer
Compensa
tion
Meas
ure
m
ent P
e
rf
ormance
T
rou
b
leshoo
tin
g
Custod
y T
rans
fer
Compensa
tion
Meas
ure
m
ent P
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rf
ormance
T
rou
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Custod
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rans
fer
Compensa
tion
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
and
.
Slug flow
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
Slug flow
Problem with receiving device
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
Slug flow
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
Summary of Contents for MICRO MOTION 1500
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