02/07/2026
The SIEMENS SIPART PS2 is a smart electropneumatic positioner used to precisely control pneumatic linear or part-turn valve actuators, matching actual valve position to a setpoint.
With PROFIBUS PA, it communicates digitally and bidirectionally with the control system over the same two-wire loop that powers it.
KEY BENEFITS
๐ Automatic commissioning, self-calibrates zero and span, cutting setup time.
๐ Very high-quality control and tight shut-off for zero-leakage seating
๐ Up to 95% lower operating costs due to extremely minimal compressed air consumption.
๐ Built-in diagnostics; partial stroke tests and valve performance tests that assess emergency shutdown and switch valve condition (Aotewell)
๐ Multiple enclosure options: polycarbonate, aluminum, stainless steel, and flameproof variants for any installation.
The SIPART PS2 covers both linear and rotary actuators, reducing spare-parts variety, while the PROFIBUS PA gives full digital diagnostics (pressure, travel, wear) back to the control room over the existing bus wiring, rather than a simple 4-20 mA signal.
Typical Industrial Applications
1. Chemicals and Petrochemicals
2. Oil and Gas
3. Power and Energy production
4. Food and Beverage production
5. Pulp and Paper
6. Water and Waste water treatment
7. Pharmaceuticals.