Radiation detector psychrometer

Details Radiation detector psychrometer Radiation detector psychrometer

1986-10-31

1988-08-16

Chapman, John

Measuring and testing

Gas analysis

Moisture content or vapor pressure

374121, G01N 2562

Patent

active

047635223

ABSTRACT:
A hand held testing surface and scale card may be used in conjunction with a radiation detector to obtain an indication of relative humidity. The scale card is provided with two sections. One section is of absorbent relatively thin material; the second section is of non-absorbent material. The absorbent section is wetted by the user just prior to detection and cooled by evaporation. A radiation detector is then able to sense a wet bulb temperature from the wetted and cooled absorbent section. The section of non-absorbent material is kept dry. From this dry section, the radiation detector senses a dry bulb temperature. Using the sensed wet bulb and dry bulb temperatures, the user calculates the relative humidity and dew point temperature from the scales provided on the card.

REFERENCES:
patent: 1933283 (1933-10-01), Schwartz
patent: 1938074 (1933-12-01), Lanquetin
patent: 2589557 (1952-03-01), Lamb
patent: 3048038 (1962-08-01), Johnson
patent: 3645134 (1972-02-01), Kreiberg
T. Baumeister (Ed.), "Mark's Standard Handbook for Mechanical Engineers", Eighth Edition, pp. 4-31.

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