Engineering manual - UniSAB III 1.10.8
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001930 en 2021.06
Calibration
7.5.14 Software calibration, hydraulic slide systems
When the capacity/Vi slide position transmitter has been adjusted (see subsections 7.5.1 to 7.5.12) or if
it is not possible to calibrate the transmitter itself, this function can be used to adjust/fine-tune the signal.
It is possible to software calibrate both capacity and Vi slide position in the same picture. Select Setup/
Configuration/Calibrate/Position.
Minimum position (0%) should always be calibrated before maximum position (100%).
Move the capacity or Vi slide to minimum position as described in subsections 7.5.2 to 7.5.4 You can
move the capacity slide down in position by pressing the /CAP. DOWN button. If the actual reading
(cap. slide position or Vi slide position) is not showing 0.0%, but e.g. 1.5%, position the cursor at Cap.
Zero Adjustm. or Vi zero adjustment and change the calibration value to -1.5%.
Then move the capacity or Vi slide to maximum position as described in subsections 7.5.2 to 7.5.4 You
can move the capacity slide up in position by pressing the /CAP.UP button. If the actual reading (cap.
slide position or Vi slide position) is not showing 100.0%, but e. g. 95.8%, position the cursor at
Cap.100% Adjustm. or Vi 100% adjustment and change the calibration value to +4.2%.
If recalibration is needed it is recommended to reset both Zero Adjustm. and 100% Adjustm. to 0.0 be-
fore recalibration is carried out.
Note: If the capacity/Vi transmitters cannot be calibrated the calibration values used in Software adjust-
ment are usually higher. Eg the values used for a SAB 193 L are approximately -46.8% for Cap. Zero
Adjustm. and +49.3% for Cap. 100% Adjustm. Similarly the volume slide values for a SAB 193 L are ap-
proximately -37.7% for VI Zero Adjustment and +61.8% for VI 100% Adjustment.
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