PRESSURE MEASURING DEVICE AND METHOD FOR PREPARATION THEREOF FOR OPERATION Russian patent published in 2010 - IPC G01L9/00 

FIELD: measurement equipment.

SUBSTANCE: inventions refer to measurement equipment and can be used in petrochemical, gas industries and other industries. Device includes pressure sensor, constant-voltage regulator, reference supply source, conversion function linearising circuit, amplifier, control circuit, switch (commutator), analogue-to-digital converter, random access memory (RAM) keeping coefficients of correction, read-only memory (ROM) keeping coefficients of conversion function, output signal shaper, power unit, computing device, control unit and indication device. Vertexes of one of the diagonals of sensory bridge are connected to inputs of amplifier with programmable amplification factor, which is connected to output signal shaper. The other diagonal of the bridge is connected with one of its vertexes to input of constant-voltage regulator, the second input of which is connected to output of daisy chain "reference supply source - linearising circuit of conversion function". The second vertex of the second diagonal of sensory bridge is connected to temperature measurement channel. The third amplifier input with programmable amplification factor is connected to one of the outputs of control circuit, the second output of which is connected to one of the outputs of control circuit, the second output of which is connected to linearising circuit of conversion function, and input - to output of analogue-to-digital converter. Computing device is connected with one input to analogue-to-digital converter output, with the second input - to control unit output, and its outputs are connected to inputs of random access memory (RAM), read-only memory (ROM) and indication device correspondingly, and RAM output is connected to the second input of control circuit.

EFFECT: improving measurement accuracy at maintaining high quick action of pressure measurement device and enlarging functional capabilities of the device.

2 cl, 1 dwg