21 March 1994 Temperature measurement and accuracy of bi-colored radiometer applying pseudo graybody approximation
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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.
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Terumi Inagaki, Yoshizo Okamoto, Zuofen Fan, 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); doi: 10.1117/12.171177; https://doi.org/10.1117/12.171177
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