Bristol Babcock, Inc.

Paul Mayer

A circuit for compensating a silicon strain gauge pressure transmitter. The circuit includes: a current source, an embodiment of which may include an amplifying device and means for supplying the current source with an electric potential, a strain gauge bridge, a plurality of resistances that includes a feedback resistance, a series resistance, a current sampling resistance, and a load with parameters. The key to this invention is to add a series resistance and a feedback resistance to the circuit which eliminates the need for R.sub.c, the current sample resistor, to be a thermistor, and increases the operating temperature range of the sensor by compensating the sensor's parameter variations with temperature.

Growing community of inventors

Sandy Hook, CT, United States of America

Paul Mayer