Commissioning
7.3 Purge air switching
SIPART PS2 with and without HART
122 Operating Instructions, 10/2013, A5E00074631-11
When the enclosure is open, the purge air switch above the pneumatic terminal strip on the
pneumatic block can be accessed.
● In the IN position, the enclosure is flushed from inside with a small volume of clean and
dry instrument air.
● In the OUT position, the purge air is directly directed towards outside.
Pneumatic connections Y1, Pz and Y2
Figure 7-1 Purge air switch on the pneumatic block; view of the positioner on the pneumatic
connection side when the cover is open
The factory setting is the "IN" position.
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