Operating 
  6.1 Operating elements 
SIPART PS2 with and without HART 
Operating Instructions, 10/2013, A5E00074631-11 
103 
 
 
Figure 6-1  Display and buttons of the positioner 
●  You can use three buttons to operate the positioner. 
●  The function of the buttons depends on the mode selected. 
●  In a positioner with a flameproof enclosure, the buttons are protected with a cover. The 
button cover can be opened after unlatching the locking screw. 
 
Note 
Key cover 
In positioners with fl
ameproof enclosures, the button cover prevents liquids from seeping 
 4x degree of protection is not ensured when the enclosure or 
the button cover is open.
 
You have to remove the enclosure cover to operate the buttons of the basic device or the 
"intrinsically safe" version.  
 
Note 
Degree of protection 
The IP66/NEMA
 4x degree of protection is not ensured as long as the positioner is open.