SIPART PS2 Smart, electropneumatic positioner, PROFIBUS PA, Ex/nEx, double-acting, polycarbonate enclosure, for pneumatic linear and part-turn actuators. Standard Without explosion protection. Connection thread el.: M20x1.5 / pneu.: G 1/4 Without limit monitor. Without option module. . Brief instructions English / German / Chinese. Standard / Fail-Safe - Depressurizing the actuator in case of failure of electrical auxiliary power (single acting only). Manometer block aluminumG¼, double-acting with plastic manometer IP31 (MPa, bar)