Technical Data For Natural Gas As Actuator Medium - Siemens SIPART PS2 Operating Instructions Manual

Technical data

12.7 Technical data for natural gas as actuator medium

12.7 Technical data for natural gas as actuator medium
Introduction
Note when using an actuator with natural gas that this can escape at the following points:
● At the exhaust air outlet with sound absorber.
● At the enclosure vent.
● At the control air outlet near the pneumatic connections.
Note
Exhaust air outlet with a sound absorber
The positioner is supplied as standard with a sound absorber. To provide an outlet for the
exhaust air, replace the sound absorber by a G¼ pipe coupling.
Enclosure ventilation and control air outlet
Enclosure ventilation and control air outlet cannot be collected and channeled off.
Please refer to the following table for the maximum ventilation values.
Maximum values for escaping natural gas
Ventilation process
Ventilation of the enclosure volume. Purge air
switch is at "IN":
Ventilation via the control air outlet near the
pneumatic connections:
Ventilation through the exhaust air outlet with a
sound absorber
Volume
1) Depending on the actuating pressure and volume of the actuator as well as the frequency of con-
252
trol. The maximum flow rate is 470 Nl/min at a differential pressure of 7 bar.
Operating 6DR5.1.-.E...
mode
Single-acting
[Nl/min]
Operation, 0.14
typical
Operation, 0.60
max.
Error case, 60.0
max.
Operation, 1.0
typical
Operation, 8.9
max.
Error case, 66.2
max.
Operation, 358.2
max.
Error case,
max.
Max. [l] 1.26
SIPART PS2 with and without HART
Operating Instructions, 02/2016, A5E00074631-AB
6DR5.2.-.E...
Double-acting
[Nl/min]
0.14
0.60
60.0
2.0
9.9
91.0
339
1) 1),
1.23