method for contactless temperature measurement of materials with strong absorptionsbanden emissionsgradunabhängigen

摘要

In a method of contactless temperature measurement, which is independent of the degree of emission, of materials having pronounced absorption bands, in particular plastics materials or glass, using a multiple-channel pyrometer, radiation from a test object is evaluated in at least two narrow-band spectral ranges. A degree of emission equal to 1 is assumed for each spectral range to be evaluated and the object temperature for each range is determined, the highest object temperature determined being output as the true object temperature.