39
Determining the Resistance for Adjustment of the Off-center Load
Determining Resistance Values
- Place the test weight on each load cell in turn and write down each displayed
value.
- Using the lowest displayed value as the basis, calculated the resistance values
for the other load cells in accordance with the following equation:
Equation:
Equation:
Equation:
Equation:
Equation:
R
R
R
R
R = R
R
R
R
R(0) x G
G
G
G
G(D) / G
G
G
G
G(T)
R
R
R
R
R
= required resistance (in ohms)
R
R
R
R
R(0) = Initial resistance in the load cell being adjusted (in ohms), (if not specified
in the specification sheet) measured between (OUT_POS, positive
measuring voltage) and Signal - (OUT_NEG, negative measuring voltage).
G
G
G
G
G(D) = Difference between lowest off-center loading error (from reference load
cell) and the off-center load value displayed for the weigh cell (in kg).
G
G
G
G
G(T) = Test weight applied (in kg)
- Solder the required resistor into the bridge of the load cell being adjusted.
- Then perform calibration/adjustment again.
Adjusting the Weighing Platform