Measuring and testing – Fluid pressure gauge – With pressure and/or temperature compensation
Patent
1981-07-15
1985-04-02
Woodiel, Donald O.
Measuring and testing
Fluid pressure gauge
With pressure and/or temperature compensation
73706, 73718, 73722, 73725, 92 1, G01L 1904, G01L 912
Patent
active
045079722
ABSTRACT:
A pressure receiving element for receiving an external pressure is attached to one end of a body and a temperature compensating diaphragm is attached to the other end of the body. A coupling shaft disposed in the body is fixed at both ends to the pressure receiving element and the diaphragm, respectively. A liquid is sealed in the body and means is provided for detecting displacement or force applied to the coupling shaft in accordance with a pressure received by the pressure receiving element. The diaphragm has corrugations of concentric circles and the crests of a plurality of them are made flat and one of the flat crests is fixed to the body. The effective area of the diaphragm inside of the flat crest that is fixed to the body is selected substantially to be equal to the effective area of the pressure receiving element.
REFERENCES:
patent: 3894436 (1975-07-01), Jurovsky
patent: 3895524 (1975-07-01), Jurovsky
Woodiel Donald O.
Yokogawa Hokushin Electric Corporation
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