DIFFERENTIAL PRESSURE TRANSMITTER

摘要

When the damping time constant Dt is changed to Dt=0, the sampling period Ts is automatically changed from 100 ms to 50 ms. The sampling time ts is automatically changed from 60 ms to 30 ms. Thus, when the damping time constant Dt is changed to Dt=0, a processing unit (3) samples an electrical signal corresponding to the pressure difference of a fluid detected by a differential pressure sensor (1) for the sampling time ts=30ms in every sampling period Ts=50 ms, and finds the measurement value ?P of the differential pressure by performing a variety of operation processing including a linearization operation and a square root operation on the sampled electrical signal. In the operation processing, the processing unit (3) does not perform a damping operation.