MULTI-VARIABLE SENSOR CALIBRATION.

摘要

In a calibration circuit for calibration of the output of a differential sensor, signals adjustable in gain for calibration are summed with potentiometrically derived signals for offset calibration to provide a single ended output. Additionally, a signal dependent upon a parameter in respect of which the sensor is unwantedly dependent is summed so that the unwanted response may be compensated. This additional signal is also arranged for calibration in gain and offset so that the unwanted response is calibrated out. The range of calibration includes a null point where there is no response in respect of one parameter to permit calibration in respect of another without interaction.