Capacitive pressure transducer

Details Capacitive pressure transducer Capacitive pressure transducer

1977-08-01

1979-04-24

Goldberg, E. A.

Electricity: electrical systems and devices

Electrostatic capacitors

Variable

361274, H01G 700

Patent

active

041515781

ABSTRACT:
A capacitive pressure transducer including a pair of electrically insulative elastic diaphragms disposed adjacent each other and bonded together in a spaced apart relationship to form a sealed cavity, a conductive layer applied to the inside surface of each of the diaphragms and a small absolute pressure provided in the cavity. This small absolute pressure cavity essentially reduces the effects of the negative temperature coefficient of the modulus of elasticity of the diaphragms.

REFERENCES:
patent: 2080429 (1937-05-01), McNally
patent: 2755419 (1956-07-01), Hollmann
patent: 3405559 (1968-10-01), Moffatt
patent: 3645137 (1972-02-01), Hazen
patent: 3715638 (1973-02-01), Poyle

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