Emerson Micro Motion LNG Series, Configuration And Use Manual

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Need help? If the zero fails:
• Ensure that there is no flow through the sensor, then retry.
• Set
Zero Time
to a lower value, then retry.
• If you want to return the flowmeter to operation using a previous zero value:
- To restore the zero value set at the factory: Device Tools > Zero Verification and Calibration >
Calibrate Zero > Restore Factory Zero . This function requires the enhanced core processor.
- To restore the most recent valid value from transmitter memory:
Device Tools
>
Zero
Verification and Calibration > Calibrate Zero > Restore Prior Zero . Restore Prior Zero is available only
while the Flow Calibration window is open. If you close the Flow Calibration window, you
will no longer be able to restore the prior zero.
Restriction
Restore the factory zero only if your meter was purchased as a unit, it was zeroed at the factory, and
you are using the original components.
9.2.2 Record the zeros
ProLink III Device Tools > Diagnostics > Zero Log
Overview
Record the zero values from the zero log.
The zero log stores the last twenty zero values for each sensor, including the time stamp,
maximum/minumum temperature, maximum/minimum density, and maximum/
minimum drive gain.
Note
The maximum and minimum values are the values stored while the meter was calibrating each zero.
9.3 Validate the meter
ProLink III
Device Tools
>
Configuration
>
Process Measurement
>
Flow
Device Tools > Configuration > Process Measurement > Density
Overview
Meter validation compares flowmeter measurements reported by the transmitter to an
external measurement standard. If the transmitter value for mass flow, volume flow, or
density measurement is significantly different from the external measurement standard,
you may want to adjust the corresponding meter factor. The flowmeter’s actual
measurement is multiplied by the meter factor, and the resulting value is reported and
used in further processing.
Measurement support
Configuration and Use Manual 63