Infrarood verwarming mechanisme: Wanneer ver-infrarood stralen stralen uitstralen naar an object, absorptie, reflectie en transmissie kunnen optreden. Echter, niet alle moleculen kan absorberen ver-infrarood stralen, alleen die polaire moleculen dat show elektriciteit kan werken. Water, organisch stoffen, en hoog moleculair stoffen hebben a sterk vermogen om ver ver infrared stralen. Wanneer deze stoffen absorberen ver-infrarood straling energie en maken hun moleculaire en atomaire trillingen en rotatie frequentie consistent met de frequentie van ver-infrarood straling, it is very easy for moleculen en atomen to resonate or rot, resulting in greatly increased motion, which is converted into The heat can raise the internal temperature, so that the material can softened or dryd quickly.
The general heating method is to use heat conduction and convection, which needs to be transmitted through a medium, which is slow and consumes a lot of energy, while far-infrared heating uses heat radiation without medium transmission. At the same time, since the radiant energy is directly proportional to the fourth power of the temperature of the heating element, it not only saves energy but also has high speed and high efficiency. In addition, far-infrared rays have a certain penetrating ability. Because the heated and dried material absorbs far-infrared radiation energy at a certain depth inside and surface molecules at the same time, it produces a self-heating effect, which evaporates the solvent or water molecules and generates heat evenly, thereby avoiding The deformation and qualitative change caused by different degrees of thermal expansion keep the appearance, physical and mechanical properties, fastness and color of the material intact.
The infrared moisture analyzer is mainly determined by the infrared radiation heater and electronic balance to determine its accuracy and stability.
Infrared radiation heater: tungsten vacuum tube can radiate near-infrared rays, silicon carbide is a long-wavelength far-infrared radiation heater, and quartz glass and ceramic infrared heaters can radiate mid-infrared rays.
Infrared moisture meter is an infrared moisture meter that is heat-dried and mass-measured, which is very similar to the "drying loss method" of the recognized standard measurement method of moisture measurement standards. The "drying loss method" of the recognized standard measurement method is also called (105 degree 5-hour method), (135 degree 3-hour method), etc., by placing the sample in a dryer and heating and drying for a long time, To accurately measure the mass change before and after drying, so as to calculate the moisture content. To this end, it is necessary for the assay personnel to be very proficient in equipment and technology. Since the measurement takes a long time, it is difficult to quickly measure a large number of samples. Therefore, for high-accuracy determination of a variety of samples, there is no need to think of anything other than an infrared moisture meter. Although there are some other electrical and optical measurement methods, they all belong to special instruments with limited measurement objects. From the perspective of versatility, they are far inferior to infrared moisture meters.
Scope of application: It can measure food-related items such as grains, starch, flour, dry noodles, brewed products, seafood, processed fish products, processed edible meat products, seasonings, desserts, hearts, dairy products, dry foods, vegetable oils, and pharmaceuticals , ore sand, cokes, glass raw materials, cement, chemical fertilizers, paper, pulp, cotton, various fibers and Overig industrieel producten.
