WPLL Series meter e bohlale ea turbine ea metsi e sebelisoa haholo ho lekanya sekhahla sa phallo ea metsi hang-hang le kakaretso ea kakaretso, kahoo e khona ho laola le ho lekanya bophahamo ba metsi. Metha ea phallo ea turbine e na le rotor e nang le li-multiple-bladed e kentsoeng ka phala, e lumellanang le phallo ea mokelikeli. Rotor e bilika ha mokelikeli o feta har'a mahare. Lebelo la ho potoloha ke ts'ebetso e tobileng ea sekhahla sa phallo 'me e ka bonoa ka ho nka makenete, sele ea photoelectric, kapa likere. Li-pulse tsa motlakase li ka baloa le ho kopanngoa.
Li-coefficients tsa metha e phallang tse fanoeng ke setifikeiti sa calibration ho lino tsena, viscosity e ka tlase ho 5х10.-6m2/s. Haeba viscosity ea metsi> 5х10-6m2/s, ka kopo, lekanya sensor ho latela mokelikeli oa 'nete le li-coefficients tsa sesebelisoa pele u qala mosebetsi.