Emerson Micro Motion 2500, Configuration And Use Manual

Page: 151 / 238

SMV has an output mode called Continuous Measurement that allows the transmitter to keep
measuring while the test is in progress. If you choose to run the test in
Last Measured Value
or
Fault
modes instead, the transmitter outputs will be held constant for the two minute
duration of the test. If control loops depend on transmitter outputs, take appropriate
action.
Avoid process instability during the test. If conditions are too unstable, the SMV test will
abort. To maximize process stability:
• Maintain a constant fluid pressure and temperature.
• Avoid changes to fluid composition, e.g., two-phase flow or settling.
• Maintain a constant flow rate.
Tips
• The SMV test runs best when flow is stopped through the sensor.
• SMV is not affected by any configured transmitter parameters for flow, density, or
temperature.
11.2.3 Run SMV
Run an SMV test using ProLink III
1. Choose Device Tools > Diagnostics > Meter Verification > Run Test.
You may need to wait a few seconds while ProLink III synchronizes its database with
the transmitter data.
2. Enter any desired information on the Test Definition screen, and click Next.
All information on this screen is optional.
3. Choose the desired output behavior.
Option Description
Continue Measur-
ing
During the test, all outputs will continue to report their assigned process
variable. The test will run for approximately 90 seconds.
Held at Last Value
During the test, all outputs will report the last measured value of their as-
signed process variable. The test will run for approximately 140 seconds.
Held at Fault During the test, all outputs will go to their configured fault action. The
test will run for approximately 140 seconds.
4. Press Start.
Test progress is displayed on the screen.
Postrequisites
View the test results and take any appropriate actions. You can also print the report.
Measurement support
Configuration and Use Manual 143