Measuring and testing – Fluid pressure gauge – Electrical
Patent
1978-02-21
1979-05-22
Woodiel, Donald O.
Measuring and testing
Fluid pressure gauge
Electrical
73777, 338 4, G01L 906
Patent
active
041552628
ABSTRACT:
The leakage current in metal oxide varistor bodies is found to vary as a function of applied pressure in the 0.5 kbar to 10 kbar range.
A pressure sensing device is conditioned by first prestressing a metal oxide varistor to a pressure above the range of measurement and then releasing the prestress pressure. Upon application of subsequent pressures equal or less than the prestress pressure, the leakage current in the device is found to vary as a function of pressure.
REFERENCES:
patent: 3682841 (1972-08-01), Matsuoka
patent: 3790870 (1974-02-01), Mitchell
Article by Wong et al., Journal of Applied Physics 46, (1975), pp. 1653-1659.
Bundy Francis P.
Wong Joe
Cohen Joseph T.
Cutter Lawrence D.
General Electric Company
Snyder Marvin
Woodiel Donald O.
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