Method and apparatus for infrared pyrometer calibration in a rap

Details Method and apparatus for infrared pyrometer calibration in a rap Method and apparatus for infrared pyrometer calibration in a rap

1995-07-26

1998-10-13

Gutierrez, Diego F.F.

Thermal measuring and testing

Thermal calibration system

By thermal radiation emitting device

374131, 374141, 2502521, G01K 1500

Patent

active

058202617

ABSTRACT:
A calibration instrument for calibrating a temperature probe, such as pyrometer, uses a stable light source, such as a light emitting diode, to simulate a blackbody of a known temperature. The light source is located inside a chamber and emits light through an aperture. The calibration instrument may be inserted into a thermal processing chamber, or the temperature probe may be removed from the chamber. An alignment tool aligns the aperture to the input of the temperature probe. The calibration instrument may be integrated with the alignment tool, or it may be removable.

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patent: 5265957 (1993-11-01), Moslehi et al.
patent: 5317492 (1994-05-01), Gronet et al.
patent: 5324937 (1994-06-01), Chen et al.
patent: 5326170 (1994-07-01), Moslehi et al.
Pyzhkov, A.I., et al., "Stable Source of Infrared Radiation for Photometer Calibration", (1986) Measurement Techniques, vol. 29, No. 4.
Bryant, F.J., et al., "Infrared Absorption Measurements in the Field Using Led Sources", (1992) Power Engineering Journal, p. 56.
Patent Abstracts of Japan, vol. 11, No. 201 (P-590), JP 62022036, published Jan. 30, 1987.

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