Research on Correction of Infrared Diagnostic Criteria for High-temperature Electrical Equipment under Extreme Cold Conditions

Temperature is a basic feature of the object. In this paper, a new infrared system is designed for the temperature measurement of high-temperature electrical equipment under extremely cold conditions. According to the experimental data, the temperature variation is summarized, and the measured temperature is further corrected for accurate measurement of the temperature. In the improved experiment, the maximum relative error of temperature measurement is 0.27 %, and the average error is 0.106 %, far less than the average relative error of hand-held temperature measuring instrument which is 1.5%. The research of the correction of infrared diagnostic criteria for high-temperature electrical equipment in low-temperature environments effectively illustrates that the new infrared temperature measurement system effectively reduces the influence of the environment on temperature measurement.