SIPART PS2 Smart, electropneumatic positioner, 4...20mA (3/4-wire), nEx, double-acting, polycarbonate enclosure, for pneumatic linear and part-turn actuators. Standard Without explosion protection. Connection thread el.: 1/2" NPT / pneu.: 1/4" NPT Without limit monitor. Analog Output Module (AOM), analog position feedback 4 ... 20 mA. Device plug M12 optionally orderable with -Z D53. Isolating power supply SITRANS I100 separately orderable (7NG4124-1AA00). . Brief instructions English / German / Chinese. Standard / Fail-Safe - Depressurizing the actuator in case of failure of electrical auxiliary power (single acting only). Manometer block aluminum ¼‑18 NPT, double-acting with plastic manometer IP31 (MPa, psi)