Moisture-sensitive element for moisture sensors

Details Moisture-sensitive element for moisture sensors Moisture-sensitive element for moisture sensors

1990-04-26

1991-12-03

Williams, Hezron E.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

73 2905, 361286, H01G 520, G01N 2564

Patent

active

050690698

ABSTRACT:
A moisture-sensitive element comprising a moisture-sensitive film which consists of a polymer (such as a polymer in which polyethersulfon is a principal component) whose water sorption amount is between 10 and 40 mg/g at a temperature of 30.degree. C. and a relative humidity of 90% RH. The temperature-sensitive element has a low temperature dependency, a small hysteresis and a quick response and accordingly can be employed in a wide range of temperature as well as in a severe condition such as high humidity, high temperature, cyclically fluctuating humidity, low humidity, moisture condensation, water dipping and so on.

REFERENCES:
patent: 4473813 (1984-09-01), Kinjo et al.
patent: 4520341 (1985-05-01), Miyoshi et al.
patent: 4528543 (1985-07-01), Miyoshi et al.
patent: 4642601 (1987-02-01), Sugawara et al.
patent: 4681855 (1987-07-01), Huang
patent: 4761710 (1988-08-01), Chen
patent: 4920451 (1990-04-01), Sakai et al.
patent: 4965698 (1990-10-01), Thoma et al.

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