Infraraudonųjų spindulių technologija nešiojamieji infraraudonųjų spindulių termometrai
The undisputed understanding of its principle is its temperature measurement. When useing an infrared thermometer to measure temperature, the infrared energy emitted by the object being measured is converted into an electrical signal on the detector through the optical system of the infrared thermometer. The temperature reading of this signal is displayd, and there are s s important factors that determine the temperature measurement. The most important factors are emissivity, field of view, distance to the light spot, and position of the light spot.
Spinduliavimas, visi objektai reflektyvus, transmit, ir emisija energija, ir tik the emitted energy can indicate the temperature of the object. When an infrared thermometer measures surface temperature, the instrument can receive all three types of energy. Todėl, all infraraudonųjų spindulių termometrai must be adjusted to read only the emitted energy. Measurement errors are paprastai caused by infrared energy reflected by other light sources.
Some infrared thermometers can change emissivity, and emissivity values for various materials can be found in published emissivity tables. The other instruments have a fixed preset emissivity of 0.95. The emissivity value is compensated for the surface temperature of most organic materials, paints, or oxidized surfaces by applying a tape or flat black paint to the tested surface. When the tape or paint reaches the same temperature as the base material, measure the surface temperature of the tape or paint to obtain its true temperature. The ratio of distance to spot, the optical system of an infrared thermometer collects energy from a circular measuring spot and focuses it on the detector. The optical resolution is defined as the ratio of the distance from the infrared thermometer to the object to the size of the measured spot (D: S). The larger the ratio, the better the resolution of the infrared thermometer, and the smaller the size of the measured light spot.
Lazeris taikymas is tik naudotas to assist in aig at the measurement taškas. The latest improvement in infrared optics is the addition of near focus characteristics, which can provide measurements for small target areas and prevent the influence of background temperature. Field of view, užtikrinant that the target is larger than the spot size measured by the infrared thermometer. The small the target, the closer it should be. Kada tikslumas yra ypač svarbu, užtikrinti kad the target is at mažiausiai dvigubai the size of the light spot.
