TB20, strain gauge weighing module | Edition 1 | 21.12.2018
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5.2.6
Offset of the load cell
If the measurement value with an unladen load cell deviated from zero, or if the weighing is to
commence with a fixed value, the characteristic of the load cell can be relocated with the parameter
offset. The offset value relocates the entire characteristic.
The offset adjustment must always take place with an unladen weighing instrument.
The offset value is a configuration parameter. The offset value must be transferred as a configuration
value from the user program to the weighing module or be set with the help of the TB20 ToolBox. The
offset value is permanently stored in the weighing module. The offset value can be changed by
overwriting.
The offset value raises or lowers the entire characteristic including the set sampling points.
The offset value must be provided in kg with 2 decimal points. A negative offset value raises the
characteristic.
If the weight of the weighing mechanics and/or the weighing vessel are to be incorporated into the
offset, this weight is to be configured as an offset value instead of as 0 with an unladen load cell.
Example: Taring is to take place on a weighing vessel.
1. Weigh the vessel with the measurement value issue [kg], note the measurement value
2. Unload the scale.
3. Set the weight of the vessel positively as an offset value.
The load on the load cell for which an offset value is to be set must be less than the rated load of the load
cell. An offset value greater than the rated load value results in incorrect measurement values. Exceeding
of this value is not monitored.
