Method of measuring temperature of a sheet with a noncontacting-

Details Method of measuring temperature of a sheet with a noncontacting- Method of measuring temperature of a sheet with a noncontacting-

1978-06-07

1980-01-29

Kellogg, Arthur D.

Glass manufacturing

Processes

With measuring, sensing, inspecting, indicating, or testing

65158, 65162, 136213, C03B 1802

Patent

active

041859820

ABSTRACT:
A noncontacting-type pyrometer for measuring the temperature of a glass ribbon has a hot junction at the center of a circular black body adjacent a first surface thereof and a layer of thermal insulating material on the opposite second surface. The radius (a) of the black body, the spacing (b) of the pyrometer from the glass ribbon and the thickness (c) of the black body is selected to satisfy the equation b<a/5c in order that the temperature of the black body as measured by the hot junction is approximately the temperature of the glass ribbon.

REFERENCES:
patent: 2102955 (1937-12-01), Hulme
patent: 2433116 (1947-12-01), Greenbowe et al.
patent: 3354720 (1957-11-01), Hager, Jr.
patent: 3400587 (1968-09-01), Franck
patent: 3957475 (1976-05-01), Schwenninger et al.
patent: 4008062 (1977-02-01), Nishikori et al.
patent: 4114444 (1978-09-01), Schwenninger et al.
"Heat Flux Measurements: A Practical Guide," D. R. Hornbaker & D. L. Rall, Instrumentation Technology, Feb. 68, pp. 51-56.
American, Society for Testing & Materials Committee E-21 on Space Simulation entitled "Proposed Method for Measuring Heat Flux Using a Circular Foil, `Gardon,` Calorimeter," Jan. 69, by C. E. Brookley.

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