| 摘要 |
A pyrometric measurement method and a multi-channel pyrometer for determining the temperature To of surfaces with different emissivities by measuring the spectral signal voltages Uj at j=1 to n effective wavelengths. The invention obtains, by infrared measurements at at least two effective wavelengths, information concerning the object temperature and the emissivity relationships actually existing for selected surface materials, such as those which are typical for a user. The spectral signal voltages Uij are ascertained as a function of the difference Uoj-Uuj for a discrete number i=1 to n of surface materials differing in emissivity and the hypothetically possible spectral voltages Uoij and, from these, the probable object temperature To and the probable applicable surface material are determined from the measured spectral signal voltages Uj, using the functional relationship that has been established for each emissivity epsilon ij.
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