supplied by similar industries such as the OEM (Original Equipment
Manufacturer) department of Siemens Process Instrumentation. It therefore makes
sense for the two companies to work together on the development of new innovative
valves. This has led to an equal partnership, which is producing valve solutions
that meet for example even the strict requirements in terms of vacuum density (helium
leakage test) specified by the XFEL (X-Ray
Free-Electron Laser Facility) in Hamburg, Germany. In the concrete project, the values also had to
pass the function test in the magnetic field – which is a challenge even for
proven Siemens Sipart PS2 positioners.
Problem-free use in a magnetic field
A system with external electronics was developed specifically for these applications. The system part mounted on the actuator comprises only the pneumatic components and the signal feedback for the actuator. The actual control electronics is installed separately in a 19-inch module rack and is therefore outside the magnetic field. The valve positioner itself behaves quite normally in the magnetic field and the positioner system based on Sipart PS2 passed the demanding test in an independent test lab in all three dimensions (two directions per axis). The solution therefore met the customer’s strict requirements without problems.