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Example: Calculating the trim offset and the trim slope
Comparison 1 Laboratory value 50.00%
Meter value 49.98%
Comparison 2 Laboratory value 16.00%
Meter value 15.99%
Populate the equations:
50 =
(
A × 49.98
)
+ B
16 =
(
A × 15.99
)
+ B
Solve for A:
50.00 − 16.00 = 34.00
49.98 − 15.99 = 39.99
34 = A × 33.99
A = 1.00029
Solve for B:
50.00 =
(
1.00029 × 49.98
)
+ B
50.00 = 49.99449 + B
B = 0.00551
Concentration slope (A): 1.00029
Concentration offset (B): 0.00551
Related information
Adjust concentration measurement with Trim Offset
9.10 Set up user-defined calculations
Display Not available
ProLink III Device Tools > Configuration > User-Defined Calculations
Field Communicator Configure > Manual Setup > Measurements > User-Defined Calculations
Overview
User-defined calculations are used to enhance measurement or to adapt the meter to
special process conditions.
Measurement support
154 Micro Motion
®
Fork Viscosity Meters (FVM)