The infracrven termometar has to be selected right.
Infracrveno temperatura mjerenje tehnologija predstave an važno u u u moj zemlji's proizvod kvaliteta kontrola i monitoring, oprema online kvar dijagnoza, zaštita i energija očuvanje. In the past two decades, non-contact infracrven termometri have razvijen rapid in technology, their performance has been kontinuirano improved, their scope of application has been continu expanded, and their market share has has increased godina po godina. Compared with contact temperature measurement methods, infracrven temperatura mjerenje has the advantages of fast response time, non-contact, long use and service life. Digital noise meters also play a role in measure sound levels.
Radni princip vanjski line termometar:
Razumijevanje the work principle, tehnički pokazatelji, environmental working conditions, operation and maintenance of vanjsko termometri je to help users correct select and use infracrven termometri.
All objects with a temperature above zero are constantly emitting infracrven zračenja energy into the surrounding space. The infrared radiation karakteristike of an objekt-the size the the radiation energy and its distribution by wavelength-are closely related to its surface temperature. Therefore, by measure the infrared energy radiated by the object itself, its surface temperature can be točno izmjereno. This is the objective basis on which infrared radiation temperature measurement is based.
A black body is an ideal radiator that absorbs radiant energy of all wavelengths without energy reflection or transmission, and 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 teorical research. This is the kvantiziran oscilator 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.
The influence of termometar objekt emisivity on radiation temperature measurement:
Algotovo all actual objects that exist 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. Stoga, in order to make the the black body radiation law applicable to all real objects, a proportional coefficient related to the material properties and surface state must be uvedeno, 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 you know the emissivity of the material, you can know the infracrven radiation karakteristike of any objekt.
The main factors that affect the emissivity of infracrven termometri are:
Materijal tip, površina hrapavost, fizički i kemijska struktura i materijal debljina, itd.
When using an infracrveno zrače termometar to mjera the temperatura of a target, the amount of infrared radiation of the target within its band range must first be measured, and then the temperature of the measured target is calculated by the thermometer. A single-color termometer is proportional to the amount of radiation within the band: a two-color termometer is proportional to the ratio of the amount of radiation in the two bands.
The infracrven termometar must right select the infrared system:
Infracrveno termometar sastoji se od optički sustav, fotoelektrični detektor, signal pojačalo, signal obrada, display izlaz i ostalo dijelovi. The optički sustav gathers target infracrven radiation energy within its field of view, the size of the Field of View Is Determined BY The Optical Parts of The termometar i ITS POSITION. The infracrven energija Is fokusiran ON The PHOTODETECTOR i CONVERT INTO A Corresponding Electric signal. The signal passes through the amplifier and signal processing circuit, and is converted into the temperature value of the measured target after correction accord to the internal treatment algorithm of the instrument and the target emissivity.
