Ko te raupapa MSP-25 he taputapu whakahaere ka whiwhi i te tohu whakaputa 4~20mA mai i te kaiwhakahaere, i te punaha whakahaere ranei, katahi ka
ka huri ki te tohu pehanga hau e peia ana te kaitahuri pneumatic ki te whakahaere i te takirere.Te nuinga whakamahia mo te tuunga takirere
te whakahaere i nga reera raina pneumatic, hurihuri ranei.