Kai pasirinkimas an infraraudonųjų spindulių termometras, trys dalykai galimas būti paimtas į sąskaitą.
Našumas rodikliai, toks as temperatūra diapazonas, taškas dydis, darbinis bangos ilgis, matavimas tikslumas, atsakas laikas, etc.; aplinkos ir darbo sąlygos, toks as aplinka temperatūra, langas, ekranas ir išėjimas, apsauga priedai, etc.; kiti variantai, toks as ease of use, maintenance and kalibravimas performance, and price, etc., also have a certain impact on the choice of thermometers. Su the continuous development of technology and technology, the best design and new progress of infrared thermometers provide users with various functions and multi-purpose instruments, expanding the choice.
The signal processing function of the infrared thermometer is explained to determine the temperature measurement range: the temperature measurement range is the most important performance index of the thermometer. Each type of thermometer has its own specific temperature range. Todėl, the user's measured temperature range must be considered tiksliai ir visapusiškai, n too narrow nor too wide. Pagal to the law of black body radiation, the change of radiant energy caused by temperature in the short-wave band of the spectrum will exceed the change of radiant energy caused by emissivity error. Todėl, it is better to use short-wave as much as possible when measurement temperature.
Nustatyti the target size: Infraraudonųjų spindulių termometrai gali būti padalinti į vienspalvius termometrus ir dviejų spalvų termometrus (spinduliuotė kolorimetriniai termometrai) pagal į the principą. For a monochromatinis termometras, kai matavimas temperatūra, the plotas of the target to be measured should fill the field of view of the thermometer. It is recommended that the measured target size exceed 50 percent of the field of view. If the target size is smaller than the field of view, the background radiation energy will enter the visual and acoustic symbols of the thermometer and interfere with the temperature measurement readings, causing error. Converse, if the target is larger than the pyrometer's field of view, the pyrometer will not be affected by background outside the measurement area.
The signal processing function of the infrared thermometer is explained to determine the optical resolution (distance is sensitive) The optical resolution is determined the ratio of D to S, which is the ratio of the distance D between the thermometer to the target and the diameter S of the measurement spot. Jei the termometras must be installed far away from the target due to environmental conditions, and a small target must be measured, a thermometer with high optical resolution should be selected. The higher the optical resolution, i.e. increasing the D:S ratio, the higher the cost of the pyrometer.
