Intrinsically Yakachengeteka Kuputika-Uchapupu Maka

Kuputika-uchapupu hwakachengeteka hunomiririra chikamu chakati mukati menzira dzekudzivirira-kuputika, inonzi zviri pamutemo se 'Intrinsically Safe,’ uye inoratidzwa nechiratidzo “i.”

Rudzi urwu rwakaiswa muzvikamu zvitatu zvakasiyana: ia, ib, uye ic, imwe neimwe ichiratidza mwero wakasiyana wekuchengetedzwa kwemukati.