Our range of intelligent electropneumatic positioners for linear and part-turn actuators is represented by the names SITRANS VP300 and SIPART PS2. These two product models optimally cover every application. Regardless of application; safe control of valves in chemicals and oil & gas, or precise control in pharmaceuticals or food; we offer the positioner solution for every valve. These include the most widely used electropneumatic positioner, SIPART PS2. The new SITRANS VP300 opens even more applications for our family of intelligent positioners. Whether a proven device or a new one – the fundamental features of our positioners are always the same: comprehensive functionalities, diagnostics capability, simple assembly, and fast commissioning. The result is also always the same: with Siemens positioners, processes are completely safe and reliable.

SITRANS VP300 is our newest addition to the family. It supplements our range of positioners for use in hostile environments, and with compressed air, which is frequently moist or contaminated. Innovative features such as non-contacting position detection and rugged mechanical connection via an OPOS interface not only mean that the SITRANS VP300 is particularly resistant to vibration, but also permit simple and fast assembly with just two screws.
• Standard aluminum enclosure to IP66/ NEMA 4x protection.
• Non-contacting position detection (GMR effect).
• Rapid assembly through innovative OPOS interface.
• Simple operation using graphic display and menu prompting.
• Plain text in several languages.
• SIL-certified partial stroke test.

SIPART PS2 is currently the most widely used positioner for linear and part-turn actuators in a wide range of process industries. This is not without reason. The proven all-round design has a particularly flexible stroke range, intelligent diagnostics, and different communication protocols. What has been proven so often is certainly the correct choice.
• Versions with external non-contacting travel sensors.
• High flexibility in the stroke range from 3 to 200 mm (0.1 to 7.9 inch) (more on request).
• Communication via PROFIBUS PA, FOUNDATION Fieldbus or HART.
• EExD explosion-proof version.
• SIPART PS2 is available in Macrolon, aluminum and stainless steel casings.
• SIPART PS2 prevents the closing of fittings during the solenoid valve test, or monitors open/close fittings as an “intelligent solenoid valve”.

The following valve and actuator failures can be detected.
• Friction and clogging of a valve.
• Pneumatic leakage (e. g. tear in actuator membrane).
• Growing deposits in a pipeline or tear of valve plug for continuous processes.
• Wear and tear of valve seat or valve plug.
• Deposits or incrustations on valve seat or valve plug.
• Stiction of stuffing box.
• “Partial Stroke Test“ (PST) for open/close valves (e. g. safety valves, ESD) and control valves.