Métodi mai karamin Electron capture detector (ECD) don gas sf6 na switchgear

Na ɗaya ɗaya da ake amfani da shi wajen gano abubuwa, karamin Electron Capture Detector (ECD) yana iya gano sulfur hexafluoride (SF6) a matsayin tsari mai muhimmanci da take sa 1 ppmv. Wannan muhimmiyar tushen ya faru daga cewa SF6 tana da kyakkyawan da ita zai iya ƙara electrons. Electrons masu inganci da za su ƙara zuwa mafi girman SF6 sun haifi da sabon kayan radioactive a cikin ECD. A wajen ƙarin, ECD tana amfani da sabon kayan radioactive a matsayin membran na kayan adabin radionuclide na nickel.

A lokacin da alama ta yi aiki, electrons da suka fitar da sabon kayan radioactive suna haifar da electric field. Electrons masu haifata suna ƙare gas na ƙasashen, wanda yana da kyau air na ƙasa. Saboda haka, an rarrabe ionization current mai ƙaramin da ions da electrons suna ƙoƙarin wa electrodes.

Idan SF6 ana cika a ƙaramin air da aka gano, ita tana ƙara tsari na electrons masu inganci a cikin sistem. Wannan yana faruwa saboda electrons suna ƙara zuwa mafi girman SF6. Ƙara na ionization current tana da shi daidai da tsari na SF6 a ƙaramin. Amma ya kamata a tabbatar da cewa abubuwa masu ƙarin suna da kyakkyawan da su zai ƙara electrons, wanda yana nuna cewa alama tana iya ƙara bili da SF6 kuma abubuwa masu ƙarin.

A halin ƙarfi, ECD tana yi aiki a matsayin flow rate detector. Wannan yana faruwa saboda sensor tana pumpa ƙaramin gas zuwa electric field a ƙaramin sama. Daga bayanan calibrating, data na flow rate tana ƙoƙarin rubuta zuwa tsari na SF6 kuma tana rubuta a parts per million by volume (ppmv).

Hoton da ake bayyana tana nuna Electron Capture Detector (ECD).