Fiber optical temperature sensors

Details Fiber optical temperature sensors Fiber optical temperature sensors

1979-06-22

1981-07-14

McGraw, Vincent P.

Optics: measuring and testing

Optical pyrometers

With sample engaging rod or tube

73356, 356 45, G01J 528, G01J 560, G01K 1112

Patent

active

042783496

ABSTRACT:
A fiber optical temperature measuring apparatus is based on the ability of certain materials to change color in dependence on changes in temperature. Visible or invisible light having at least two different wavelengths is supplied to the material and the light emanating from the material is detected for determining the changes in the absorption characteristic of the material at the emitted wavelengths by determining the quotient between the detected signals from the material.

REFERENCES:
patent: 3910701 (1975-10-01), Henderson et al.
patent: 4016761 (1977-04-01), Rozzell et al.
patent: 4075493 (1978-02-01), Wickersheim
patent: 4136566 (1979-01-01), Christensen
patent: 4179927 (1979-12-01), Saaski

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