Measuring and testing – Gas analysis – Moisture content or vapor pressure
Patent
1977-06-24
1979-01-30
Gorenstein, Charles
Measuring and testing
Gas analysis
Moisture content or vapor pressure
73362R, 250226, 250227, 356 44, G01K 1118
Patent
active
041365666
ABSTRACT:
A temperature sensor utilizing a semiconductor sensing element which absorbs monochromatic radiant energy as a function of temperature. The apparatus includes a monochromatic radiant energy source, radiant energy guide means, a semiconductor sensing element interposed in the radiant energy guide means and a detector for detecting the intensity of the monochromatic radiant energy transmitted by the semiconductor sensing element. Advantageously, optical fibers may be used as the radiant energy guide means for directing the monochromatic radiant energy to the semiconductor and returning the transmitted radiant energy to the detector. The semiconductor sensing element is fabricated from a suitable semiconductor material such as galium arsenide. Additionally, the semiconductor material can be fabricated as a mirror or reflecting prism so that it serves both as the sensing element and as part of the optical components for the radiant energy guide means.
REFERENCES:
patent: 2824235 (1958-02-01), Hahn, Jr. et al.
patent: 3960017 (1976-06-01), Romanowski
patent: 4016761 (1977-04-01), Rozell et al.
Gorenstein Charles
University of Utah
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