The Siemens SIPART PS2 is a high-performance electro-pneumatic valve positioner, designed for precise control of pneumatic linear and part-turn actuators in industrial process systems. It is one of the most widely used intelligent positioners in global process automation due to its reliability, versatility and advanced diagnostic capabilities.

The device converts a standard control signal (typically 4–20 mA, with HART or fieldbus options) into a pneumatic output that accurately positions control valves. It continuously compares the setpoint with the actual valve position and adjusts actuator air supply to maintain precise control and stable process performance.

The SIPART PS2 is suitable for both general and severe service applications, with robust enclosure options and certifications for hazardous areas.