These connections are sealed with screws when the device is delivered.
The exhaust air outlet is corrosion-resistant for the blanketing of the pick-up room and the
spring chamber with dry instrument air.
â‘ Actuating pressure Y1
â‘¡ Exhaust air outlet
Figure 5-13 Integrated pneumatic connection
5.3.3 Pneumatic connection in the flameproof enclosure
Structure
The pneumatic connections are provided on the right side of the positioner.
â‘ Restrictor Y2
*)
⑤ Output: Actuating pressure Y1
② Restrictor Y1 ⑦ Enclosure ventilation (2x)
â‘¢ Output: Actuating pressure Y2
*)
â‘¥ Exhaust air outlet
â‘£ Input: Supply pressure PZ
*) for double-acting actuators
Figure 5-14 Pneumatic connection in the flameproof enclosure
Connection
5.3 Pneumatic connection
SIPART PS2 with 4 to 20 mA/HART
92 Operating Instructions, 11/2019, A5E00074631-AE
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