Calibration Advanced - Mantracourt T24-ACMi-SA User Manual

Calibration Advanced

In some circumstances it may not be possible to apply inputs in which case the calibration can be entered
manually.
For example, if a strain gauge manufacturer provides a calibration table for a cell it may be possible to calculate
gains and offsets and enter these values into the Advanced Calibration page without having to connect the strain
gauge or apply weights.
Items you can change:
Number of Calibration Points
Input Points 1 – 9
(mV/V shown in this
screenshot)
Gain 1 - 9
Offset 1 - 9
System Zero
Description of Linearisation Calculations
The input value is looked up in a table of points starting from point 1. If the input mV/V is greater than the mV/V
specified at that point then it is checked against the next point. When the best point has been found the Gain and
Offset values from that point are applied to the mV/V value as follows.
Value = (input * Gain) – Offset.
Mantracourt Electronics Limited
Enter the number of points you wish to calibrate over. In its simplest form you
could select two for a linear calibration.
For more complex calibrations which include linearization select three to nine
points.
Enter the input point to which the associated interpolated gain and offset values
will be applied. Note between points the gain and offset values are linearly
interpolated. Inputs are extrapolated below point 1 and above point 9.
Enter the gain value for associated point
Enter the Offset value for associated point
You can set the system zero value here or set it to zero to remove the system
zero effect.
50
T24 Telemetry User Manual