Temperature measurement and accuracy of bi-colored radiometer applying pseudo graybody approximation

Terumi Inagaki; Yoshizo Okamoto; Zuofen Fan; Katashi Kurokawa

doi:10.1117/12.171177

21 March 1994 Temperature measurement and accuracy of bi-colored radiometer applying pseudo graybody approximation

Terumi Inagaki, Yoshizo Okamoto, Zuofen Fan, Katashi Kurokawa

Proceedings Volume 2245, Thermosense XVI: An International Conference on Thermal Sensing and Imaging Diagnostic Applications; (1994) https://doi.org/10.1117/12.171177
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

It is necessary to obtain a surface radiation temperature that does not include reflection energy, because the influence of reflection energy on measured images of a surface radiation temperature is comparatively large on a metal surface. In general, there are two ways to eliminate reflection energy and to specify a true temperature. One typical method is the analytical method which obtains a true surface temperature after measuring a true emissivity using IR radiometer. Another is based on the bicolored method applying pseudo gray-body approximation, in which a true surface temperature can be acquired after eliminating emissivity on a surface with the aid of radiation energy possessing various detection wavelengths. The surface temperature measurement using bicolored radiometer combined with pseudo gray-body approximation has not been discussed yet. Therefore, in the present study, we will propose and investigate the bicolored temperature measurement based on a power law description of energy for various detection wavelengths. And then its applicability and accuracy on temperature measurement will also be estimated as follows.

Citation Download Citation

Terumi Inagaki, Yoshizo Okamoto, Zuofen Fan, and Katashi Kurokawa "Temperature measurement and accuracy of bi-colored radiometer applying pseudo graybody approximation", Proc. SPIE 2245, Thermosense XVI: An International Conference on Thermal Sensing and Imaging Diagnostic Applications, (21 March 1994); https://doi.org/10.1117/12.171177

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