Thermal measuring and testing – Temperature measurement – By electrical or magnetic heat sensor
Patent
1983-03-22
1985-03-26
Yasich, Daniel M.
Thermal measuring and testing
Temperature measurement
By electrical or magnetic heat sensor
338 32S, 346 33TP, 374186, G01K 700, G01K 102
Patent
active
045069964
ABSTRACT:
A thermometer capable of providing temperature measurement over a wide temperature range comprises at least one temperature detection unit consisting of a first superconductor as a core, and a normal conductor and a second supercondutor sequentially superposed coaxially on the first superconductor; a first power source disposed to pass electric current between the first and second superconductors, a second power source disposed between the opposite terminals of the first superconductor, and a voltmeter connected to the first and second superconductors. This thermometer effects measurement of temperature by fixing the value of the electric current from the first power source and changing the value of the electric current from the second power source thereby causing cyclic change of the voltage and measuring the increment of electric current from the second power which is required to cause one cycle of change of the voltage.
REFERENCES:
patent: Re25712 (1965-01-01), Slade
patent: 3428891 (1969-02-01), Purcell et al.
patent: 3868768 (1975-03-01), Meyer
patent: 4044298 (1977-08-01), Ekin
patent: 4384265 (1983-05-01), Shimamoto et al.
Publication: Published Application, Great Britain No. 2,107,064, 4/20/83, derived from 1977 application 7902357, pp. A1, A2, 1, 2 and 6.
"Superconductors in Instrumentation", D. H. Parkinson, J. Sci. Instrum., 1964, vol. 41, pp. 68-77.
Agency of Industrial Science & Technology
Ministry of International Trade & Industry
Yasich Daniel M.
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