Emerson Micro Motion LNG Series, Configuration And Use Manual

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Alert num-
ber
Alert title Possible cause Recommended actions
A102 Drive Overrange The drive power (current/voltage) is
at its maximum. • Check the drive gain and the pickoff
voltage.
• Check the wiring between the sensor
and the transmitter.
• Verify that internal wiring is secure and
that there are no internal electrical
problems.
• Check for air in the flow tubes, tubes
not filled, foreign material in the tubes,
coating in the tubes, or other process
problems.
• Check for fluid separation by monitor-
ing the density value and comparing
the results against expected density val-
ues.
• Ensure that the sensor orientation is ap-
propriate for your application. Settling
from a two-phase or three-phase fluid
can cause this alert even if the flow
tubes are full.
A104 Calibration in Pro-
gress A calibration procedure is in proc-
ess. • Allow the procedure to complete.
• For zero calibration, you may abort the
calibration, set
Zero Time
to a lower val-
ue, and restart the calibration.
A105 Two-Phase Flow The line density is outside the user-
defined two-phase flow limits. • Check for two-phase flow.
A107 Power Reset Occur-
red The transmitter has been restarted. • No action required.
• If desired, you can set
Alert Severity Level
to
Ignore
.
N/A Density D1 Calibra-
tion in Progress A D1 density calibration is in pro-
gress. • No action required.
N/A Density D2 Calibra-
tion in Progress A D2 density calibration is in pro-
gress. • No action required.
N/A Zero Calibration in
Progress A zero calibration is in progress. • No action required.
N/A Reverse Flow Flow through the device is in the re-
verse direction (against the flow ar-
row). • No action required.
Troubleshooting
74 Micro Motion ® LNG Series Meters