PicoStrain: Strain Gauge / Load Cells
The PS021 offers a very elegant method to correct for the span and offset compensation. This is based on the fact that the PS021 separates span and offset compensation and can measure directly the span compensation resistor.
The span compensation resistor can be modfied by software (through multiplication with a programmable register value).
Span Compensation Resistor Advantages
In todays solutions offset and span Compensation are not independent.
Therefore the offset of the bridge have to be adjusted by resistors near
to zero. PS021 can handle both values independent form the other. There
is no need for the adjustment of the Bridge offset in Loadcell