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Introduction and principle knowledge of human infrared thermometer

Introduction and principle knowledge of human infrared thermometer

In the production process, infrared temperature measurement technology plays an important role in product quality control and monitoring, equipment online fault diagnosis and safety protection, and energy saving. In the past 20 years, non-contact infrared human body thermometers have developed rapidly in technology, with continuous improvement in performance, continuous enhancement of functions, continuous increase in varieties, and continuous expansion of the scope of application. Compared with contact temperature measurement methods, infrared temperature measurement has the advantages of fast response time, non-contact, safe use and long service life. Non-contact infrared thermometers include three series: portable, online and scanning, and are equipped with various options and computer software. In each series, there are various models and specifications. Among various types of thermometers with different specifications, it is very important for users to choose the correct infrared thermometer model.


The infrared  thermometer used to test the temperature of the human body is called the human body infrared thermometer. But it must be clarified that there is no special medical or industrial infrared thermometer, because the manufacturing principles of infrared thermometers are the same. There are only high-precision, high-distance coefficient ratio, high-performance infrared thermometers and low-precision, low-distance coefficient ratio and low-performance infrared thermometers. As long as the emissivity of the infrared thermometer is set to 0.95 (the emissivity of human skin is generally this value, even if there is a difference, the effect is only within 0.3 degrees), it is in line with the requirements of human temperature measurement. (For example: all brands of cars can run at a speed of 40 yards, high-end cars may reach a speed of 200 yards, but there is no distinction between a car that runs 40 yards and a car that runs 200 yards, only the difference between high and low performance cars .)

Post time: May-19-2021