Measuring and testing – Fluid pressure gauge – With pressure and/or temperature compensation
Patent
1994-05-31
1996-02-06
Chilcot, Richard
Measuring and testing
Fluid pressure gauge
With pressure and/or temperature compensation
73115, 73727, 73754, 310338, G01L 2318
Patent
active
054888689
ABSTRACT:
A diaphragm portion 20 causes deflection, when high-temperature fluid pressure acts on the pressure sensing surface A of the diaphragm portion 20. This deflection is transmitted via pressure transmitting members 7, 8 to a deflection sensing member 6 which generates an electric signal in response to a pressure received.
The diaphragm portion 20 has a recess portion 21 at its center. The recess portion 21 is symmetrical about a central axis of the diaphragm portion 20. A tip end of the pressure transmitting member 7 is brought into contact with the recess portion 21 at a central point. A tapered portion 2d of the diaphragm 20 has a thickness of t.sub.3 which is not larger than the thickness t.sub.1 of an outer peripheral portion 2b or t.sub.2 of a central bottom portion 2c. Furthermore, a heat insulating plate can be provided on the diaphragm to protect the surface A of the diaphragm portion from heat radiation of high-temperature fluid.
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Hatanaka Makoto
Nagase Kazuyoshi
Ootake Seiichirou
Ozaki Shinji
Chilcot Richard
Dombroske George M.
Nippondenso Co. Ltd.
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