Thermal measuring and testing – Temperature measurement – In spaced noncontact relationship to specimen
Patent
1990-05-03
1991-12-31
Yasich, Daniel M.
Thermal measuring and testing
Temperature measurement
In spaced noncontact relationship to specimen
250351, 374139, G01J 500, G01K 100
Patent
active
050767070
ABSTRACT:
Pyrometric temperature measurement of molten masses arranged in a vacuum involve the problem that the material of the molten mass deposits on mirrors, windows and other optical means so that the radiation, on its way to the pyrometer, is ever more absorbed. For preventing vapor depositions in the path of radiation, a matter filter having a rotating vane wheel is arranged between the container for the molten mass and the pyrometer. The radiation passes through the gaps between the vanes. Molecules of the molten material are caught by the vanes. Accordingly, a mirror behind the matter filter is kept free of undesired vaporization and transmits radiation to the pyrometer.
REFERENCES:
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patent: 4337396 (1982-06-01), Lauer et al.
patent: 4435092 (1984-03-01), Iuchi
patent: 4693615 (1987-09-01), Kyriakis
patent: 4836689 (1989-06-01), O'Brien
patent: 4842674 (1989-06-01), Fretz et al.
Patent Abstracts of Japan, p. 377, Aug,. 2, 1985, vol. 9, No. 13, No. 60-57224, "Temperature Measuring Device by Radiation Thermometer", (1 page).
Deutshe Forschungsanstalt fur Luft-und Raumfahrt e.V.
Yasich Daniel M.
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