Measuring and testing – Gas analysis – Moisture content or vapor pressure
Patent
1982-10-27
1984-11-13
Goldberg, Gerald
Measuring and testing
Gas analysis
Moisture content or vapor pressure
73 73, 338 35, G01N 2712
Patent
active
044818130
ABSTRACT:
A dew sensor of direct current type and resistance-lowering type with increasing humidity for quick and sharp detection of dewing is provided, which comprises a pair of counterposed electrodes, humidity-sensitive layer of insulating porous metal oxide with a porosity of 20 to 60% provided on and between the counterposed electrodes, and an organic polymer coating layer having a thickness of 0.05 to 2 .mu.m provided on the humidity-sensitive layer.
REFERENCES:
patent: 3671913 (1972-06-01), Mamiya et al.
patent: 4041437 (1977-08-01), Matsuura et al.
patent: 4167725 (1979-09-01), Shimizu et al.
patent: 4245506 (1981-01-01), Meiklejohn
Ikegami Akira
Isonae Hiromi
Iwanaga Shoichi
Otsu Hiroshi
Tanei Hirayoshi
Goldberg Gerald
Hitachi , Ltd.
Williams Hezron
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