Liquid filled pressure transducer

Details Liquid filled pressure transducer Liquid filled pressure transducer

1980-07-10

1982-01-12

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Diaphragm

73706, G01L 904

Patent

active

043099084

ABSTRACT:
A liquid filled pressure pick-up or transducer comprises a housing, as strain gage sensor is supported in a liquid filled cavity in the housing and a membrane extends across an opening in the housing. A force transmitting rod connects the membrane to the strain gage sensor. In order to avoid damage especially to the membrane by extreme excess pressures, a plastically deformable support member acting as a stop is operatively held in the housing substantially in parallel to the membrane whereby the rod extends with play through the support member. An elastic seal extends around the rod hole in the support member toward the membrane. A substantially mirror symmetrical arrangement of two membranes and two support members results in a differential pressure transducer.

REFERENCES:
patent: 3353410 (1967-11-01), Mac Neil
patent: 3400908 (1968-09-01), Bauer
patent: 4006640 (1977-02-01), Gealt
patent: 4161887 (1979-07-01), Stone et al.

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