calibration weights and calibration digits, and the characteristic curve is determined
immediately. The same applies when you change a weighing module.
Note
Two working points are usually sufficient for determining the scale's characteristic curve. An
additional working point is only required for non-linear systems.
Specification of negative calibration points is not possible. However, the characteristic can also
be used in the negative range down to -2 000 000 digits. To achieve this, the characteristic
curve generated in the positive range is extended into the negative range.
/
PD[
/R
/R!/RGLJLWV
/
PD[
!GLJLWVPD[
/!/GLJLWV
/
/
/RDG
/ !GLJLWV
'LJLWV
/!/GLJLWV
/
Figure 8-4 Linearizing the scale's characteristic curve
Load Comment Load Digits
L=0 Load cells empty Approx. 0
Lo Calibration weight 0 "Zero
point"
0 kg e.g. 76 082 for calibra‐
tion point 0
L1 Calibration weight 1 e.g. 60 kg e.g. 386 452 for calibra‐
tion digits 1
L2 Calibration weight 2 e.g. 80 kg e.g. 451 367 for calibra‐
tion digits 2
L
max
Rated load of the load cell(s) e.g. 100 kg 1 000 000
L
max
+10 % Rated weight + approximately
10%
e.g. approximately 110
kg
1 090 000
Scale parameters and functions
8.5 Calibration procedure
SIWAREX WP321
Operating Instructions, 08/2019, A5E33715669A-AD 69
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