Pressure gauge
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.
- Assignee:
- Yokogawa Hokushin Electric Co. (Japan)
- Patent Number(s):
- US 4507972
- OSTI ID:
- 5316714
- Resource Relation:
- Patent Priority Date: Priority date 15 Jul 1981, Japan; Other Information: PAT-APPL-283699
- Country of Publication:
- United States
- Language:
- English
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