Measuring and testing – Gas analysis – Moisture content or vapor pressure
Patent
1978-11-27
1980-04-08
Woodiel, Donald O.
Measuring and testing
Gas analysis
Moisture content or vapor pressure
137835, G01K 100
Patent
active
041966260
ABSTRACT:
The temperature sensors shown utilize a constant frequency fluidic oscillr to excite resonance tubes, whose frequency response is a function of temperature. The outputs of these sensors control a fluidic amplifier, whose output is rectified and filtered to produce a D.C. fluid signal which is a function of the sensed temperature. Different embodiments utilize resonance tubes excited in phase or 180.degree. out of phase to sense the difference between two temperatures or to provide increased sensitivity.
REFERENCES:
patent: 3566689 (1971-03-01), Ringwall et al.
patent: 3572123 (1971-03-01), Boothe et al.
patent: 3618385 (1971-11-01), Kelley et al.
Drzewiecki Tadeusz M.
Manion Francis M.
Paras Charles E.
Phillippi Richard M.
Edelberg Nathan
Elbaum Saul
Gibson Robert P.
The United States of America as represented by the Secretary of
Woodiel Donald O.
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