Thermal measuring and testing – Temperature measurement – Nonelectrical – nonmagnetic – or nonmechanical temperature...
Patent
1986-04-22
1988-03-08
Shoap, Allan N.
Thermal measuring and testing
Temperature measurement
Nonelectrical, nonmagnetic, or nonmechanical temperature...
374127, 374131, G01K 1120
Patent
active
047296682
ABSTRACT:
A method and apparatus are provided for remotely monitoring temperature. Both method and apparatus employ a temperature probe material having an excitation-dependent emission line whose fluorescence intensity varies directly with temperature whenever excited by light having a first wavelength and whose fluorescence intensity varies inversely with temperature whenever excited by light having a second wavelength. Temperature is measured by alternatively illuminating the temperature probe material with light having the first wavelength and light having the second wavelength, monitoring the intensity of the successive emissions of the excitation-dependent emission line, and relating the intensity ratio of successive emissions to temperature.
REFERENCES:
patent: Re31832 (1985-02-01), Samlilski
patent: 4215275 (1980-07-01), Wickersheim
patent: 4278349 (1981-07-01), Sander
patent: 4459044 (1984-07-01), Alves
patent: 4542987 (1985-09-01), Hirschfeld
patent: 4576486 (1986-03-01), Dils
patent: 4581530 (1986-04-01), Brogardh et al.
patent: 4592664 (1986-06-01), Bijlenla
"Recent Advances in Optical Temperature Measurement", Wickersheim and Alves, Industrial Research & Development, Dec. 1979.
Angel S. Michael
Hirschfeld Tomas B.
Carnahan L. E.
Hightower Judson R.
Lee Michael B. K.
Shoap Allan N.
The United States of America as represented by the United States
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