43
3-point Measurement
– Place the off-center load test weight in Position A on the weighing pan/
load plate and press t to tare.
– Place the test weight in Positions B and C and record the value displayed at
stability in each case.
– Example: Pos. A Press t 0.000 mg
Pos. B + 0.005 mg
Pos. C – 0.004 mg
– Adjust only the side with the greatest deviation (absolute value) as follows:
Negative deviations:
Turn the adjustment screw inwards (clockwise)
Positive deviations
Turn the adjustment screw outwards (counterclockwise)
– Change the position of each screw in small increments and measure the off-
center loading error in Positions A, B and C after each adjustment.
– Repeat this procedure until the off-center loading error is within the
tolerance limits at all 3 positions.
Note: After adjusting the off-center loading error, the linearity and span must be
checked and, if necessary, adjusted.
B
C
A
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