Differential resistance humidity detector

Details Differential resistance humidity detector Differential resistance humidity detector

1986-09-30

1988-01-05

Paschall, M. H.

Electric heating

Heating devices

With power supply and voltage or current regulation or...

219501, 219483, 219505, 324 65R, 324105, 733365, 73 75, H05B 102

Patent

active

047178116

ABSTRACT:
A humidity detector includes a first heat-sensing element for an electric signal corresponding to the temperature of steam to be detected and a second heat-sensing element for an atmosphere temperature whose vapor is to be detected or a temperature close to it. A comparator compares the electric signals from the first and second heat-sensing elements. The vapor detection characteristics may be adjusted through variation in the heating temperature of the first heat-sensing element.

REFERENCES:
patent: 4080564 (1978-03-01), Nitta et al.
patent: 4270085 (1981-05-01), Terada et al.
patent: 4326414 (1982-04-01), Terada et al.
patent: 4572900 (1986-02-01), Wohltjen
patent: 4594569 (1986-06-01), Fukushima et al.

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