Respiratory monitor

Details Respiratory monitor Respiratory monitor

1980-03-03

1982-04-27

Michell, Robert W.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

128721, 128724, A61B 508

Patent

active

043264042

ABSTRACT:
An apparatus for detecting the quantity of moisture in a given region includes a crystal of sodium chloride, a support for the crystal in the region and means for detecting the change in the electrical resistance of the crystal caused by the exposure of the crystal to moisture. A dry gas is caused to flow intermittently over the crystal to remove the accumulated moisture from it. This prevents the crystal from dissolving and allows the use of a smaller crystal than would otherwise be possible.

REFERENCES:
patent: 2064651 (1936-12-01), Fiene
patent: 3831707 (1974-08-01), Takeuchi
patent: 3935742 (1976-02-01), Rybak

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