What is the working principle of infrared thermometer?
Working principle of infrared thermometer
Understanding the working principle, technical indicators, environmental working conditions, operation and maintenance of the infrared thermometer outside the group is to help users choose and use the infrared thermometer correctly.
All objects with a temperature higher than absolute zero are constantly emitting infrared radiation energy to the surrounding space. The infrared radiation characteristics of an object—the size of the radiation energy and its distribution by wavelength—has a very close relationship with its surface temperature. Therefore, by measuring the infrared energy radiated by the object itself, its surface temperature can be accurately determined, which is the objective basis for infrared radiation temperature measurement.
Black body radiation law:
A blackbody is an idealized radiator that absorbs all wavelengths of radiant energy, has no reflection or transmission of energy, and has an emissivity of 1 on its surface. It should be pointed out that there is no real black body in nature, but in order to clarify and obtain the distribution law of infrared radiation, an appropriate model must be selected in theoretical research, which is the quantized oscillator model of body cavity radiation proposed by Planck, so that Planck's law of black body radiation, that is, the black body spectral irradiance represented by wavelength, is the starting point of all infrared radiation theories, so it is called the law of black body radiation.
