Infrared thermometer must be selected correctly
Infrared temperature measurement technology plays an important role in my country's product quality control and monitoring, equipment online fault diagnosis, protection and energy conservation. In the past two decades, non-contact infrared thermometers have developed rapidly in technology, their performance has been continuously improved, their scope of application has been continuously expanded, and their market share has increased year by year. Compared with contact temperature measurement methods, infrared temperature measurement has the advantages of fast response time, non-contact, safe use and long service life. Digital noise meters also play a role in measuring sound levels.
Working principle of external line thermometer:
Understanding the working principle, technical indicators, environmental working conditions, operation and maintenance of external thermometers is to help users correctly select and use infrared thermometers.
All objects with a temperature higher than zero degrees are constantly emitting infrared radiation energy into the surrounding space. The infrared radiation characteristics of an object-the size of the radiation energy and its distribution by wavelength-are closely related to its surface temperature. Therefore, by measuring the infrared energy radiated by the object itself, its surface temperature can be accurately measured. This is the objective basis on which infrared radiation temperature measurement is based.
Thermometer black body radiation law:
A black body is an idealized radiator that absorbs radiant energy of all wavelengths without energy reflection or transmission. Its surface emissivity is 1. It should be pointed out that there is no real black body in nature, but in order to clarify and obtain the distribution rules of infrared radiation, an appropriate model must be selected in theoretical research. This is the quantized oscillator model of body cavity radiation proposed by Jintai Keyi, thus deriving The law of black body radiation of Jintai Keyi, that is, the black body spectral radiance expressed in wavelength, is the starting point of all infrared radiation theories, so it is called the black body radiation law.
