Wet/dry bulb hygrometer with automatic wick feed

Details Wet/dry bulb hygrometer with automatic wick feed Wet/dry bulb hygrometer with automatic wick feed

1978-08-28

1979-11-27

Petrakes, John

Measuring and testing

Gas analysis

Moisture content or vapor pressure

G01N 2562

Patent

active

041754360

ABSTRACT:
A wet/dry bulb hygrometer of the psychrometer type is used for monitoring and/or controlling humidity of a gaseous fluid having contaminants therein. The wet bulb sensor of the hygrometer is provided with a wick which is movable over the wet bulb sensor so that a fresh wicking surface is presented to the gas stream and contaminants will not render the sensor useless for accurate measurements. The hygrometer is used to monitor and/or control humidity and temperature in a textile processing environment wherein lint, fumes, condensable oils, tints and resins would tend to foul a stationary wick of a web bulb sensor and, consequently, a wick material is moved into and through the hygrometer over the wet bulb sensor and then out of the hygrometer, thus, always presenting a fresh wicking surface for the gaseous fluid stream.

REFERENCES:
patent: 1601243 (1926-09-01), Irwin, Jr.
patent: 1636350 (1927-07-01), Armstrong
patent: 2688252 (1954-09-01), King, Jr.
patent: 3303700 (1967-02-01), Kahl
patent: 3459034 (1969-08-01), Kawaguchi
patent: 3869529 (1975-03-01), Follette
patent: 3890828 (1975-06-01), Pleva

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