ON ACCURACY OF CONTACTLESS TEMPERATURE MEASUREMENT LIMITED BY UNKNOWN EMISSIVITY FACTOR
The major error of temperature measurements of different objects is due to uncertainty of their emissivity factor value. And vice versa, for correct determination of a true temperature, using conventional temperature means (pyrometers, thermal image cameras), one has to know in advance the emissivity factor of the studied object’s surface or better to set its value in place immediately before a measurement. The latter is proposed by authors to significantly increase the accuracy of temperature measurement.