Differential pressure transducer

Details Differential pressure transducer Differential pressure transducer

1987-05-26

1988-11-29

Levy, Stewart J.

Measuring and testing

Fluid pressure gauge

With pressure and/or temperature compensation

73720, 338 4, G01L 1900, G01L 904

Patent

active

047872497

ABSTRACT:
A differential pressure transducer determines a differential between two pressures. The transducer comprises a closed measuring chamber formed by at least two measuring membranes arranged to be acted upon by the two pressures, respectively. At least one pressure chamber is defined by a transmission membrane and one of the measuring membranes. A bendable bar is disposed in the pressure transmission chamber, i.e., outside of the measuring chamber, and is operably connected to the measuring membranes to be bent thereby in response to a pressure differential. Strain gauges are mounted on the bendable bar for detecting the amount of bending of the bar, thereby enabling the pressure differential to be determined.

REFERENCES:
patent: 3021670 (1962-02-01), Boles et al.
patent: 3067614 (1962-12-01), Rich
patent: 3277719 (1966-10-01), Prell
patent: 3444736 (1969-05-01), Stedman
patent: 4120206 (1978-10-01), Rud, Jr.
patent: 4599906 (1986-07-01), Freud et al.

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