Human infrared thermometer introduction and principle knowledge
Infrared temperature measurement technology in the production process, in product quality control and monitoring, equipment online troubleshooting and safety protection as well as energy saving plays an important role. In the past 20 years, non-contact infrared body thermometer in the rapid development of technology, performance continues to improve, functionality continues to enhance the variety continues to increase, the scope of application is also expanding. Than the contact temperature measurement method, infrared temperature measurement has a fast response time, non-contact, safe to use and long service life and other advantages. Non-contact infrared thermometer, including portable, online and scanning three series, and a variety of options and computer software, each series has a variety of models and specifications. In different specifications of the various models of thermometer, the correct choice of infrared thermometer model is very important to the user.
An infrared thermometer used to test the temperature of the human body is called a human infrared thermometer. However, it must be clarified that there is no specialized medical or industrial infrared thermometer, because the manufacturing principle of infrared thermometer is the same. There are only high-precision, high distance coefficient ratio, high-performance infrared thermometer and low-precision, low distance coefficient ratio and low performance of the infrared thermometer. As long as the emissivity of the infrared thermometer is set at 0.95 (human skin emissivity is generally this value, even if there is a difference, the impact is only within 0.3 degrees), is in line with the requirements of human body temperature measurement. (Such as: all brands of cars can run 40 yards of speed, high-grade cars may be able to reach 200 yards of speed, but there is no distinction between the car specifically running 40 yards and specifically running 200 yards of the car, only the difference between high and low performance cars.)
Infrared human body temperature monitor is suitable for high traffic public places to quickly monitor the human body surface temperature of the professional instruments. Has the advantages of non-contact temperature measurement, high accuracy, fast measurement speed, over-temperature voice alarm. Especially suitable for entry and exit ports, ports, airports, terminals, stations, institutions, schools, theaters and other occasions.
All objects with temperature higher than zero degree will emit infrared radiation energy with a fixed ratio according to their own temperature. The size of the radiation energy and its distribution by wavelength and its surface temperature has a very close relationship. Human body temperature in (36 ~ 37 ℃) radiation of infrared wavelengths of 9 ~ 13чm, based on this principle can be accurately determined by the surface temperature of the human forehead, correct the forehead and the actual body temperature temperature temperature difference can show the accurate body temperature.
