Dikakanyo tsa ho sebedisa likihleli tsa PID (Photoionization Detector)

Likihleli tsa PID (Photoionization Detector) lihlahisa kononge ya ntlha ka ho iona ntho eo e hlahiswang ka energeya ya lampu ya ultraviolet (UV). Ka lebaka la ho hlahisa kahare ho feta, li sebedisetsoa khahlaneng ho hlahisa likarolo tse seng metsi (VOCs). Metsi e phahameng (> 90% RH) e ka bang engela ya metsi pelelampeng ya ultraviolet, e lumellanang le lithoko. Likihleli tsa PID ke kantle ho litsebe tsotseng kapa li na le dithapelo tsa ho arola metsi.

Ha ho fapaneng le makhahla a phahameng (mohlala, >1000 ppm) kapa likarolo tsa boileng tse phahameng (mohlala, litholo, aldehydes, aromatic hydrocarbons) VOC, likhoutu tsa PID dikhanna ho akanya linneo tsa ionization kapa ho qhibiliwa/ho hloka litheko tse sa thibeloang (mohlala, litholo tsa silicone, H₂S) kusenyane sena sa UV. Sena se fokotsa tsela ya UV, e etsa hore motho theke, ho ipone ha nako ya karabo, le ho fokotseha ha mphahamo. Ho ipone ka kotisa kena ho hatella khoutu ea lamp. Ho sebelisa likhoutu tsa PID ka mekhoa ea pump sampling systems e fokotsa ho akanywa ha likoto, e hlakola tsona, le ho nyolisa nako ea bophelong ba sensor.