Abstract
Steel making plants have a variety of heating processes. Emissivity compensation is still one of the most difficult problems when radiation thermometers are applied to heated sheet in steel making processes. In previous reports 1), 2), the authors proposed a new technique using spectral information of radiation from targets and multivariate analysis, such as principal analysis (PCA) or partial least squares (PLS). This paper describes the basic concept of the technique and shows the effectiveness by simulations using calculated and measured reflectance data of various thickness films on steel sheet.
