Application of a commercially available thermal imager to a film-cooled panel temperature measurement

T. J. Meddings; Christopher W. Wilson

doi:10.1117/12.22331

1 October 1990 Application of a commercially available thermal imager to a film-cooled panel temperature measurement

T. J. Meddings, Christopher W. Wilson

Proceedings Volume 1320, Infrared Technology and Applications; (1990) https://doi.org/10.1117/12.22331
Event: Eighth International Conference Infrared Technology and Applications, 1990, London, United Kingdom

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.

Citation Download Citation

T. J. Meddings and Christopher W. Wilson "Application of a commercially available thermal imager to a film-cooled panel temperature measurement", Proc. SPIE 1320, Infrared Technology and Applications, (1 October 1990); https://doi.org/10.1117/12.22331

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