Check The Drive Gain; Collect Drive Gain Data - Emerson MICRO MOTION HFVM Series Configuration And Use Manual

Troubleshooting
Related information
10.20

Check the drive gain

Use the following table to check drive gain values. If you see a value that is too high or too
low, there could be a problem with the process or with the device. Consider other
diagnostics along with drive gain values to determine whether or not you have a problem.
Table 10-8:
Drive gain value
0%
8%
100%
10.20.1

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.
146
Tip
You can reduce the occurrence of two-phase flow alerts by setting Two-Phase Flow Low Limit to a
lower value, Two-Phase Flow High Limit to a higher value, or Two-Phase Flow Timeout to a higher
value.
Configure two-phase flow parameters
Abnormal drive gain, possible causes, and recommended actions
Possible causes
• The transmitter is not connected
to the sensor.
• The connection between the
transmitter and the sensor is dam-
aged.
Normal operation
The transmitter is unable to drive the
sensor. Possible reasons:
• Process viscosity is too high.
• Vibration is too high.
• Flow rate is too high.
• The installation is incorrect.
Navigate to the drive gain data.
Micro Motion
Recommended actions
• For integral installations, inspect
the connection between the
transmitter and the sensor and
check for visible problems.
• Contact Micro Motion customer
service.
No action required.
• Ensure that line viscosity is within
sensor limits.
• Ensure that vibration is within sen-
sor limits.
• Ensure that the flow rate is within
sensor limits.
• Review your installation to ensure
that you are complying with all re-
quirements and that you have im-
plemented best practices where
possible.
• Contact Micro Motion customer
service.
® Heavy Fuel Viscosity Meters (HFVM) Viscomaster ™