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Proceedings Paper

Application of a commercially available thermal imager to a film-cooled panel temperature measurement
Author(s): T. J. Meddings; Christopher W. Wilson
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Paper Abstract

An AGEMA 870 thermal imaging system has been used to measure the temperature of a film cooled panel in a hot duct, ventilated by flowing air at atmospheric pressure. To avoid detecting radiation from these gases, it proved necessary to view the panel through a narrow bandpass filter centred on 3.95im. The thermography results failed to agree with spot thermocouple measurements until changes were made to both the experimental and calculation procedures. The paper describes these changes and the calculation algorithms used to calibrate the system, account for non-uniform ambient radiation and eliminate the distortion produced by the wide angle lens.

Paper Details

Date Published: 1 October 1990
PDF: 12 pages
Proc. SPIE 1320, Infrared Technology and Applications, (1 October 1990); doi: 10.1117/12.22331
Show Author Affiliations
T. J. Meddings, Rolls-Royce plc (United Kingdom)
Christopher W. Wilson, Rolls-Royce plc (United Kingdom)

Published in SPIE Proceedings Vol. 1320:
Infrared Technology and Applications
Alan H. Lettington, Editor(s)

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