X'inhu id- differenza bejn aloġenu u infrared hygrometers?
Il termogravimetriku umdità analizzatur b'mod effettiv jinxef il-kampjun billi jittrasferixxi enerġija fil il-forma ta ' mewġ jew partiċelli permezz radjazzjoni (permezz mewġ ) u konvezzjoni (permezz massa moviment għal sħana trasferiment) permezz il medju (f' dan każ, il- kampjun In kuntrast , tradizzjonali tnixxif fran prinċipalment użu konvezzjoni għal niexef kampjuni. Kemm metall u aloġenu tisħin elementi emit enerġija fi l- infrared spettru.
Infrared (IR) radiation is a part of the electromagnetic spectrum, located between microwave energy and visible light. Infrared radiation includes thermal radiation, with a wavelength frequency range of 0.75 microns (the long wavelength limitu of visible red light) to 1.5 microns (the boundary on microwaves). The human eye cannot see infrared energy. The red light usually associated with infrared heating is actually reflected red red dawl minn il viżibbli spettru.
Xi umdità analizzaturi użu metall tisħin elementi, li huma biss baxxi reżistenza metall folji li jikkonvertu elettriku fi sħana. Dan tip ta ' heater huwa adattat għal ambjenti fejn l-użu ta ' ħġieġ komponenti huwa ipprojbit dovut għal regolatorju jew sigurtà konsiderazzjonijiet, tali kif ikel ipproċessar. Metal heaters are not sodisfaċenti għax huma għandhom a ħafna ammont kbir ta' sħana u jeħtieġu ħafna itwal tisħin ħin ħin mill aloġenu heaters, making minnhom diffiċli biex kontroll u unable to provide good repeatability in umdità meters.
Il aloġenu radjatur huwa mgħammar ma a tungstenu tisħin element in a compact glass tube, li fih aloġenu gass to preserva the tungsten element. Halogen radiators emit infrared radjazzjoni in the short wavelength range of 0.7d.75 to 1.5 microns. The compact characteristics of halogen radiators improve heating/cooling response time, shorten the time for the heating unit to reach full heating power, and finalment shorten the ħin biex komplut kampjun tnixxif. It jista ' ukoll jipprovdi aħjar kontroll matul it-tisħin proċess .
