Liġijiet ta ' l Infrared Termometru
Infrared termometru is an essenzjali għodda for detecting internal structural faults of power transformers, and is ukoll an important means of product quality control and monitoring. It is mainly composed of optical system, photodetector, signal amplifier, signal processing, display output and other parts. Its work The principle is introduced as follows:
Ħalli's ħares lejn ieħor liġi dwar infrared termometri.
Blackbody radiation law: A blackbody is an idealizzat radiator. It jassorbi radjanti radjanti enerġija ta kollha wavelengths, 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 achievet the distribution law of infrared radiation, an appropriate model must be selected in theoretical research. Dan IS the quantized oscillator model of body cavity radiation proposed by Planck, thus deriving Planck's law of black body radiation, that is, is, the black body spectral radiance expressed in wavelength, is the starting point of all infrared radiation theories, so it is ssejjaħ the black body radiation law.
The influence of object emissivity on radiation thermometry: Almost all actual objects existing in nature are not black bodies. The radiation amount of all actual objects depends not only on the radiation wavelength and the temperature of the object, but also on factors such as the type of material, preparation method, thermal process, surface state and environmental conditions of the object. Therefore, in order to make the black body radiation law applicable to all real objects, a proportional coefficient related to the material properties and surface state must be introduced, that is, the emissivity. This coefficient represents how close the thermal radiation of an actual object is to blackbody radiation, and its value is between zero and a value less than 1. According to the radiation law, as long as the emissivity of the material is known, the infrared radiation characteristics of any object can be known. The main factors that affect emissivity are: material type, surface roughness, physical and chemical structure, and material thickness.
Meta tuża infrared termometru biex miżura it- temperatura ta ' a mira , l-infrared radjazzjoni ta' il-mira fi ħdan its band firxa trid l-ewwel tkun imkejla, u imbagħad it-temperatura ta ' il- imkejla mira hija ikkalkulata minn it-termometru A kulur wieħed termometru huwa proporzjonali għal l- ammont ta ' radjazzjoni fi ħdan il- fand a żewġ kuluri termometru huwa proporzjonali għal il- proporzjon ta ' l-ammont ta' radjazzjoni fi iż-żewġ meded.
