Measuring and testing – Fluid pressure gauge – Diaphragm
Patent
1996-07-24
1997-12-02
Biegel, Ronald L.
Measuring and testing
Fluid pressure gauge
Diaphragm
73724, 73862337, G01L 912, G01G 1104
Patent
active
056938861
ABSTRACT:
A pressure sensor, having a simple structure for accurately measuring any one of pressure and weight, is provided. The pressure sensor includes a pair of electrode layers and a dielectric layer. The dielectric layer is composed of a rubber elastic body positioned between the pair of electrode layers to act as a spacer for the pair of electrode layers. The dielectric layer has a tan .delta., at 1 to 30 Hz at a temperature of 10.degree. C. to 30.degree. C., of 0.03 or less. The dielectric layer also has a rubber hardness of 20 to 80 degrees in terms of scale A according to JIS-K-6301 at 10.degree. C. to 30.degree. C. Further, the dielectric layer has an impact resilience of 75% or more measured according to JIS-K-6301 at 10.degree. C. to 30.degree. C. and a compression set of 3% or less measured according to JIS-K-6301 at 10.degree. C. to 30.degree. C. The dielectric layer is formed of any one of natural rubber, polybutadiene rubber, polyisoprene rubber, polyurethane rubber and silicone rubber.
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Goto Yoshikazu
Ichinose Noboru
Kamoshita Shingo
Seimiya Sadao
Tokuda Takashi
Amrozowicz Paul D.
Biegel Ronald L.
Hokushin Corporation
Nippon Dyne-a-mat Corp.
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