Method and an apparatus for simultaneous measurement of both tem

Measuring and testing – Gas analysis – Moisture content or vapor pressure

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G01J 510, G01K 1306

Patent

active

041723830

ABSTRACT:
A black body furnace and a radiation thermometer are spaced from each other in the direction of the surface of a heated material the temperature and emissivity of which is to be measured so as to be in a specular, or mirror-like, symmetry to a line normal to the heated material and the wavelength band of the detector of the radiation thermometer is selected such that the surface of the material shows specular, or mirror-like, reflection characteristics. The radiation energy emitted from the black body furnace is changed and the outputs of the radiation thermometer responding to the change are processed whereby the emissivity and surface temperature of the material are obtained. The use of this invention makes it possible to measure accurately the temperature of the material without any disturbance, even if the emissivity of the material is changed in the course of the measurement.

REFERENCES:
patent: 3057200 (1962-10-01), Wood
patent: 3433052 (1969-03-01), Maley
patent: 3796099 (1974-03-01), Shimotsuma

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