Differential pressure transducer

Details Differential pressure transducer Differential pressure transducer

1979-05-24

1981-01-13

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Diaphragm

73708, 336 30, G01L 910

Patent

active

042442290

ABSTRACT:
A differential pressure transducer, primarily for measuring gauge pressure, comprises first and second identical, substantially cylindrical, sealed capsule assemblies, each having a circular diaphragm at one axial end. The capsule assemblies are welded into the opposite ends of a cylindrical housing, with the diaphragms facing outwardly. The housing is designed to permit the transducer to be mounted in the wall of a pipe or chamber, with the diaphragm of one capsule subjected to the fluid pressure in the pipe or chamber and the diaphragm of the other capsule subjected to ambient atmospheric pressure. Respective inductive displacement sensors produce respective signals indicative of diaphragm displacement. The use of sealed capsules ensures that if a diaphragm ruptures, fluid loss cannot occur.

REFERENCES:
patent: 2564221 (1951-08-01), Hornfeck
patent: 3153935 (1964-10-01), Karlson
patent: 4106342 (1978-08-01), Sormunen

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