Reading And Interpreting Meter Verification Test Results - Emerson Micro Motion 1000 Series Configuration And Use Manual

Measurement Performance
10.3.4

Reading and interpreting meter verification test results

Pass/Fail/Abort
When the meter verification test is completed, the result is reported as Pass, Fail or Caution
(depending on whether you are using the display, the Communicator, or ProLink II), or Abort:
• Pass – The test result is within the specification uncertainty limit. In other words, the stiffness
of the left and right pickoffs match the factory values plus or minus the specification uncertain
limit. If transmitter zero and configuration match factory values, the sensor will meet factory
specifications for flow and density measurement. It is expected that meters will pass meter
verification every time the test is run.
• Fail/Caution – The test result is not within the specification uncertainty limit. Micro Motion
recommends that you immediately repeat the meter verification test. If you were using Smart
Meter Verification, with outputs set to Continue Measurement, change the setting to Last
Measured Value or Fault.
- If the meter passes the second test, the first Fail/Caution result can be ignored.
- If the meter fails the second test, the flow tubes may be damaged. Use your process
knowledge to determine the possibilities for damage and the appropriate actions for each.
These actions might include removing the meter from service and physically inspecting
the tubes. At minimum, you should perform a flow validation and a density calibration.
• Abort – A problem occurred with the meter verification test (e.g., process instability). Abort
codes are listed and defined in Table 10-3, and suggested actions are provided for each code.
Table 10-3 Meter verification abort codes
Abort code Description
1 User-initiated abort
3 Frequency drift
5 High drive gain
8 Unstable flow
13 No factory reference data for meter verification
test performed on air
14 No factory reference data for meter verification
test performed on water
15 No configuration data for meter verification
Other General abort.
Configuration and Use Manual
Suggested action
None required. Wait for 15 seconds before
starting another test.
Ensure that temperature, flow, and density are
stable, and rerun the test.
Ensure that flow is stable, minimize entrained
gas, and rerun the test.
Review the suggestions for stable flow in
Section 10.3.1 and rerun the test.
Contact Micro Motion customer service and
provide the abort code.
Contact Micro Motion customer service and
provide the abort code.
Contact Micro Motion customer service and
provide the abort code.
Repeat the test. If the test aborts again, contact
Micro Motion customer service and provide the
abort code.
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