Phetoho ea boemo ba mafura / metsi ke sesebelisoa sa bohlokoa se sebelisoang lits'ebetsong tse fapaneng ho lekola boemo ba mafura kapa metsi ka litanka. E sebetsa ka mochini oa float o tsamaeang le boemo ba mokelikeli. Ha float e fihla sebakeng se behiloeng, e kenya sesebelisoa, e romela letšoao ho tsamaiso ea taolo. Letšoao lena le ka tsosa liketso tse kang ho qala pompo, ho koala valve, kapa ho lemosa motho ea sebetsang. E entsoe ka thepa e matla, switch e etselitsoe ho mamella maemo a thata mme e tla ka mefuta e fapaneng, joalo ka mochini, capacitive, le ultrasonic, ho amohela lino tse fapaneng le boholo ba litanka.