Capacitance manometer with digital output

Details Capacitance manometer with digital output Capacitance manometer with digital output

1982-03-17

1984-08-21

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Diaphragm

73718, 361283, 331 65, G01L 912

Patent

active

044662890

ABSTRACT:
A capacitive pressure or vacuum gauge is disclosed that utilizes a transducer in which a change in capacitance between a movable conductive diaphragm and the wall of the transducer is used to sense changes in pressure or vacuum. The change in capacity is converted directly into a change in frequency of a digital signal by means of a simple resistance/capacitance oscillator in which the capacitive transducer is used as the capacitance.

REFERENCES:
patent: 3838684 (1974-10-01), Manuel

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