Thermal measuring and testing – Temperature measurement – In spaced noncontact relationship to specimen
Patent
1989-05-04
1991-03-05
Yasich, Daniel M.
Thermal measuring and testing
Temperature measurement
In spaced noncontact relationship to specimen
25022721, 350 9621, 374161, G01N 2104, G02B 6255
Patent
active
049972863
ABSTRACT:
An apparatus for measuring temperature in a region of high temperature is disclosed herein. The measuring apparatus includes a sensor made from a fluorescent material, located within the region of high temperature. The fluorescent decay time of the fluorescent material is dependent upon the temperature of the fluorescent material. A first optical waveguide is located within the high temperature region and coupled to the sensor by means of a glass solder. The first optical waveguide is coupled to a second optical waveguide located outside the region of high temperature, and the second optical waveguide is connected to a means for detecting and evaluating the fluorescent radiation, also located outside the region of high temperature. A source of excitation radiation is used to cause the fluorescent material to fluoresce, and by measuring the fluorescence decay time, the temperature within the region can be determined.
REFERENCES:
patent: 4033668 (1977-07-01), Presby
patent: 4119363 (1978-10-01), Camlibel et al.
patent: 4223226 (1980-09-01), Quick et al.
patent: 4456330 (1984-06-01), Bludau 350 96.18
Fehrenbach Gustav W.
Schmidt Stefan
Degussa - AG
Yasich Daniel M.
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