Pressure measurement system with a constant settlement time

Details Pressure measurement system with a constant settlement time Pressure measurement system with a constant settlement time

1981-07-13

1984-05-22

Myracle, Jerry W.

Measuring and testing

Fluid pressure gauge

Diaphragm

73708, 361283, G01L 912

Patent

active

044494092

ABSTRACT:
The invention provides a pressure measurement system with a substantially constant settlement time. The invention includes a closed loop pressure measurement system having an input impedance configuration and a feedback impedance configuration where a signal from the feedback impedance configuration is used to null or balance a signal from the input impedance configuration. The error between the signals is integrated in a digital integrator to generate a measurement of the sensed parameter. The invention further comprises a means for varying the feedback loop gain of the system as a function of pressure in a manner to compensate for the gain change produced in the system in response to a pressure change.

REFERENCES:
patent: 3520318 (1970-07-01), Oberle
patent: 3595084 (1971-07-01), Bailey
patent: 4226125 (1980-10-01), Waugh
patent: 4250452 (1981-02-01), Gray et al.
patent: 4322977 (1982-04-01), Sell et al.

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