CONVERTER OF PRESSURE TO ELECTRIC SIGNAL Russian patent published in 1997 - IPC

FIELD: instruments. SUBSTANCE: device has tension-resistor bridge, pressure gauge which is mounted on diaphragm, differential amplifier, double switch with three pairs of signal terminals, resistive scaling circuit, adder, operational amplifier, adding amplifier, reference voltage source, process unit and generator of output electric signal. Signal terminals of double switch are connected to output of operational amplifier through adding amplifier, to resistive scaling circuit, tension-resistor bridge and common potential point of circuit. Middle point of resistive scaling circuit is connected to inverting input of operational amplifier. Outputs of double switch are connected to input of generator of output signals through serial circuit of differential amplifier, adder and process unit which is connected to double switch. Reference signal source is connected to process unit and to adder through voltage attenuation unit. Resistive scaling circuit is connected to adding amplifier, voltage attenuation unit, reference signal source and tension-resistor bridge. EFFECT: increased functional capabilities. 2 cl, 2 dwg