Differential pressure sensor with dual level overrange protectio

Details Differential pressure sensor with dual level overrange protectio Differential pressure sensor with dual level overrange protectio

1978-03-09

1979-10-30

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Diaphragm

73706, 73708, 338 4, 338 42, G01L 906

Patent

active

041723880

ABSTRACT:
A differential pressure sensor comprises a pressure-to-displacement transducer resiliently coupled to a cantilever beam strain gauge arrangement. The pressure-to-displacement transducer is provided with overrange protection permitting substantial displacement in the range of measurable pressure differentials and the more fragile cantilever beam is provided with separate overrange protection more narrowly constraining its displacement. The resilient coupling between the transducer and the beam absorbs the displacement differential. As a consequence of this structure, the device can provide high sensitivity readings in the measurable range of pressure differentials and is protected against pressure differentials greatly in excess of the measurable range.

REFERENCES:
patent: 3343420 (1967-09-01), Kondo et al.
patent: 3440872 (1969-04-01), Stedman
patent: 3780588 (1973-12-01), Whitehead et al.
patent: 4051451 (1977-09-01), Kurtz et al.
patent: 4058788 (1977-11-01), Andrews et al.

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