Commissioning
7.4 Purge air switching
7.4
Purge air switching
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.
①
②
Figure 7-1
The factory setting is the "IN" position.
122
Purging air selector
Pneumatic connections Y1, PZ and Y2
Purge air switch on the pneumatic block; view of the positioner on the pneumatic
connection side when the cover is open
SIPART PS2 with and without HART
Operating Instructions, 09/2014, A5E00074631-12