Humidity indicating method and device

Details Humidity indicating method and device Humidity indicating method and device

1975-06-06

1978-07-04

Woodiel, Donald O.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

G01W 100

Patent

active

040981207

ABSTRACT:
Humidity indicating method and device suitable for visibly indicating exposure to a selected humidity level or for indicating a humidity-time history. The device comprises in combination a deliquescent compound, a liquid absorbent wick, and an indicating means. The change in properties of deliquescent compounds are employed to indicate a particular humidity level or a humidity-time history. Preferred methods of making humidity indicating devices are described.

REFERENCES:
patent: 1625420 (1927-04-01), Patterson
patent: 2249867 (1941-07-01), Snelling
patent: 3006313 (1961-10-01), Huyck et al.
patent: 3198163 (1965-08-01), Williams
patent: 3243303 (1966-03-01), Johnson
patent: 3420205 (1969-01-01), Morison
patent: 3479877 (1969-11-01), Allen et al.
patent: 3620677 (1971-11-01), Morison
patent: 3677088 (1972-07-01), Lang
Maximum Humidity Indicator, Bendix Corporation Report BDX-613-1150 for U.S. AEC. available from National Technical Information Service.
Deliquescent-Chemical Maximum Humidity Indicator, Bendix Corp. Report BDX-613-921 for U.S. AEC., available from National Technical Information Service.

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