Measuring and testing – Gas analysis – Moisture content or vapor pressure
Patent
1975-12-22
1977-06-21
Queisser, Richard C.
Measuring and testing
Gas analysis
Moisture content or vapor pressure
G01J 552
Patent
active
040303624
ABSTRACT:
A self-calibrating radiometer comprising a block having a front surface for receiving incident radiation flux, an identically configured rear surface for receiving internally applied heat and a midportion for thermally insulating the rear surface from the front surface, the front surface being capable of absorbing as heat substantially all radiation flux incident thereupon and capable of reradiating substantially all of the absorbed heat, and the rear surface being capable of radiating substantially all heat applied thereto, a thermocouple configuration for sensing the heat radiated by each of the front and rear surfaces, an indicator for indicating any difference in the sensed heat, a heating element for applying enough heat to the rear surface so that no difference in heat radiated by the front and rear surfaces is indicated by the indicator, and a measuring circuit for measuring the heat applied to the rear surface, such measurement being indicative of the radiant flux incident on the front surface.
REFERENCES:
patent: 2305396 (1942-12-01), Volochine
patent: 2811856 (1957-11-01), Harrison
patent: 3131304 (1964-04-01), Hager, Jr.
patent: 3164021 (1965-01-01), DeJong et al.
patent: 3564252 (1971-02-01), Stoft
patent: 3599474 (1971-08-01), Brown et al.
patent: 3880522 (1975-04-01), Murray
Appleman John S.
Brekke Darrell G.
Manning John R.
Queisser Richard C.
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