Dual-mode self-validating resistance/Johnson noise thermometer s

Details Dual-mode self-validating resistance/Johnson noise thermometer s Dual-mode self-validating resistance/Johnson noise thermometer s

1992-10-30

1993-07-20

Cuchlinski, Jr., William A.

Thermal measuring and testing

Temperature measurement

By electrical or magnetic heat sensor

374183, G01K 730, G01K 716

Patent

active

052287807

ABSTRACT:
A dual-mode Johnson noise and DC resistance thermometer capable of use in control systems where prompt indications of temperature changes and long term accuracy are needed. A resistance-inductance-capacitance (RLC) tuned circuit produces a continuous voltage signal for Johnson noise temperature measurement. The RLC circuit provides a mean-squared noise voltage that depends only on the capacitance used and the temperature of the sensor. The sensor has four leads for simultaneous coupling to a noise signal processor and to a DC resistance signal processor.

REFERENCES:
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patent: 3890841 (1975-06-01), Brixy
patent: 3937086 (1976-02-01), Von Thuna
patent: 3956936 (1976-05-01), Brixy
patent: 4099413 (1978-07-01), Ohte et al.
patent: 4278828 (1981-07-01), Brixy et al.
patent: 4322725 (1982-03-01), Annetts
patent: 4627744 (1986-12-01), Brixy et al.

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