Emerson Micro Motion SGM Series User Manual

Procedure
1. Take a concentration reading from the meter, and record line density and line
temperature.
2. Subtract the meter value from a reference device.
3. 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.
• Using the Field Communicator: Configure > Manual Setup > Measurements >
Conc Measure (CM) > Trim CM Process Variables > Concentration Offset
4. 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.
Example: Calculating the trim offset
Laboratory value 64.21 %
Meter value 64.93 %
64.21  64.93 = 0.72
Concentration offset: −0.72
Related information
Adjust concentration measurement with Trim Slope and Trim Offset
13.6
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.
Prerequisites
• Ensure that the active matrix is the one that you want to trim. You can set the offset
and slope separately for each matrix on your transmitter.
Measurement support
138 Micro Motion
®
Gas Specific Gravity Meters (SGM)

Emerson Micro Motion SGM Series Specifications

General

Brand	Emerson
Model	Micro Motion SGM Series
Category	Measuring Instruments
Language	English