The theoretical prediction analyses of the measurement range for multi-band pyrometry

In the applications of multi-band pyrometry, the coupled correlation of multi-channel measurement information is a distinct characteristic. Considering this point, in order to realize the non-distortion and effective measurement, the theoretical differentiation formula of the measurement range is put forward in this paper. It may estimate not only the temperature range, but also the emissivity parameter range for the specific measured surface. Then, the corresponding simulation results are given. For an exploited multi-band pyrometer, the theoretical estimations are verified through blackbody measurement experiments. Therefore, the analyses in the paper provide the necessary theoretical supports for the design and application of a multi-band pyrometer.