Temperature-sensitive optrode

Details Temperature-sensitive optrode Temperature-sensitive optrode

1983-03-08

1985-09-24

McGraw, Vincent P.

Optics: measuring and testing

Optical pyrometers

With sample engaging rod or tube

374131, 374161, G01J 508, G01N 2164

Patent

active

045429871

ABSTRACT:
Method and apparatus are provided for measuring temperature and for generating optical signals related to temperature. Light from a fiber optic is directed to a material whose fluorescent response varies with ambient temperature. The same fiber optic delivering the excitation beam also collects a portion of the fluorescent emission for analysis. Signal collection efficiency of the fiber optic is enhanced by requiring that the fluorescent probe material be in the shape of an oblong parabolically tapered solid. Reproducibility is enhanced by using Raman backscatter to monitor excitation beam fluctuations, and by using measurements of fluorescence lifetime.

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patent: 4075493 (1978-02-01), Wickersheim
patent: 4179927 (1979-12-01), Saaski
patent: 4215275 (1980-07-01), Wickersheim
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patent: 4380365 (1983-04-01), Gross
patent: 4437772 (1984-03-01), Samulski
patent: 4456330 (1984-06-01), Bludau
Wickersheim et al., "Recent Advances in Optical Measurement", Industrial Research and Development, 12-1979.
Borman, "Optrodes", Analytic Chemistry, 12-1981.
Koechner, Solid-State Laser Engineering, Chapter 2, 1976.
"Remote Fiber Fluorimetric Analysis", Energy and Technology in Review, 7-1980, Hirschfeld.

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