Adjust Concentration Measurement With Trim Slope And Trim Offset - Emerson Micro Motion 5700 Configuration And Use Manual

Measurement support
You must be able to take a sample of your process fluid and obtain a laboratory
concentration value at line density and line temperature.
Procedure
1.
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5.
Example: Calculating the trim offset
Laboratory value
Meter value
Concentration offset: −0.72
Related information
12.7 Adjust concentration measurement with Trim
Slope and Trim Offset
Trim Slope and Trim Offset adjust the meter's concentration measurement to match a
reference value.
Tip
You can adjust concentration measurement by applying the trim offset only, or by applying both the
trim offset and the trim slope. For most applications, the trim offset is sufficient.
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Take a concentration reading from the meter, and record line density and line
temperature.
Take a sample of the process fluid and obtain a laboratory value for concentration at
line density and line temperature, in the units used by the meter.
Subtract the meter value from the laboratory value.
Enter the result as the trim offset.
• Using ProLink III: Choose Device Tools > Configuration > Process Measurement >
Concentration Measurement, set Matrix Being Configured to your matrix, and
enter Trim Offset.
Take another concentration reading from the meter, and compare it to the
laboratory value.
• If the two values are acceptably close, the trim is complete.
• If the two values are not acceptably close, repeat this procedure.

Adjust concentration measurement with Trim Slope and Trim Offset

64.21 °Brix
64.93 °Brix
64.21 − 64.93 = −0.72
Micro Motion Model 5700 with Ethernet Transmitters