Principle of Infrared thermometer and Problems to be Noticed in Its Application

Infrared thermometer is a kind of non-contact temperature measuring instrument, which is more and more widely used in the industrial field, and the accuracy of temperature measurement is a very important factor. Liu Fujie, Wang Haojing, and Fan Lidong from the Chinese Academy of Sciences analyzed the working principle of the infrared thermometer, and took the temperature measurement in a high-temperature furnace as an example to analyze how to improve the temperature measurement accuracy of the infrared thermometer in practical applications. His paper "Principle of Infrared Thermometer and Problems in Its Application" introduced in detail several aspects to improve the accuracy of infrared thermometer: 1. Determine the temperature range of infrared thermometer; 2. Determine the temperature range of infrared thermometer. 3. Determining the response time of the infrared thermometer; 4. Peak hold; 5. Determining the emissivity of the measured object; 6. The influence of environmental conditions; cleaning the lens and the calibration of the thermometer.