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PICOSTRAIN Span & Offset Compensation

acam PS021 Chip

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

  • Correct descaled Load Cells
  • Fine tuning of Load Cells without touching it
  • Higher quality of the Load Cell
  • Cost reduction in Load Cell production

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 production.

PS02 Advantages

  • No need of an offset compensation resistor
  • Software correction of offset temperature drift
  • Higher quality of the Load Cell
  • Cost reduction in Load Cell production

Schematic Diagram

(Click to enlarge)

Schematic Diagram

(Click to enlarge)