Apparatus for pressure transducer isolation

Details Apparatus for pressure transducer isolation Apparatus for pressure transducer isolation

1992-06-08

1994-08-16

Woodiel, Donald

Measuring and testing

Fluid pressure gauge

With protective separator

737291, 73756, G01L 706

Patent

active

053376129

ABSTRACT:
A transducer sensing element isolation assembly including a pressure housing having a chamber in which the sensing element is disposed, which sensing element communicates with the interior of a bellows through a sealing element disposed between the pressure housing and a base on which the bellows is secured. The chamber, bellows interior and sealing element are filled with a dead volume of low compressibility, low thermal expansion isolation fluid. The bellows is contained in a replaceable bellows capsule which is threaded into a bellows capsule cavity into which the chamber communicates, and the sealing element is maintained in place by the capsule being made up into the cavity.

REFERENCES:
patent: 1841848 (1932-01-01), Quinby
patent: 2725749 (1955-12-01), Green
patent: 3851530 (1974-12-01), Symonds et al.
patent: 4077882 (1978-03-01), Gangemi
patent: 4109531 (1978-08-01), Lawford et al.
patent: 4218925 (1980-08-01), DiDomizio, Jr.
patent: 4461180 (1984-07-01), Hellouin de Menibus
patent: 4507972 (1985-04-01), Morita
patent: 4713969 (1987-12-01), Ishii

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