The Siemens 6DR5125-.....-.... is a SIPART PS2 smart electropneumatic positioner for pneumatic linear and part-turn actuators. It accepts a 4-20 mA HART control signal and is built in a double-acting, aluminum flameproof enclosure rated Ex d, suitable for hazardous-area service. Non-contacting (wear-free) position detection (NCS) eliminates mechanical feedback wear over the valve stroke life.
Compliance documentation covers RoHS since 31-12-16 and REACH Article 33 notification for lead (CAS 7439-92-1 > 0.1% w/w). Export control is AL N / ECCN N, meaning no special licensing for most destinations. The product family is SIPART PS2, and the group code is R3P2 within product group 4759.