Displacement sensing transducer

Details Displacement sensing transducer Displacement sensing transducer

1979-03-21

1980-12-23

Albritton, C. L.

Electrical resistors

Strain gauge type

Fluid- or gas pressure-actuated

338 42, G01L 122

Patent

active

042413257

ABSTRACT:
A displacement transducer comprises a rigid support, a flexible diaphragm having a periphery attached to the support, and an interior free to deflect, and a strain sensor on the diaphragm. The diaphragm has a circular periphery and a plurality of concentric annular corrugations coaxial with the periphery. A first pair of strain gauges sense the tangential strain on one of the crests of the corrugations and a second pair of strain gauges sense the tangential strain in one of the troughs of the corrugations. The strain gauges are connected in an electrical bridge to provide a displacement representative output.

REFERENCES:
patent: 3213400 (1965-10-01), Gieb
patent: 3303451 (1967-02-01), Yuan
patent: 3894435 (1975-07-01), Shimada et al.
patent: 4157032 (1979-06-01), Schaberg

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