Siemens SIPART Series User Manual

Technical data
12.7 Technical data for natural gas as actuator medium
SIPART PS2 with and without HART
Operating Instructions, 10/2013, A5E00074631-11
243
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 a sound absorber at the bottom of the device.
● At the enclosure ventilation at the bottom of the device.
● At the control air outlet near the pneumatic connections.
Note
Exhaust air outlet with a sound absorber at the bottom of the device
The positioner is delivered as standard with a sound absorber at the bottom of the device.
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 bleeding values.
Maximum values for escaping natural gas
Bleeding process
Operating
mode
6DR5.1.-.E...
6DR5.2.-.E...
Single-acting
Double-acting
[Nl/min]
[Nl/min]
Ventilation of enclosure volume via bottom of
device. Purge air switch is at "IN":
Operation,
typical
0.14 0.14
Operation,
max.
0.60 0.60
Error case,
max.
60.0 60.0
Bleed through the control air outlet near the
pneumatic connections:
Operation,
typical
1.0 2.0
Operation,
max.
8.9 9.9
Error case,
max.
66.2 91.0
Ventilation via the exhaust air outlet with a
sound absorber at the bottom of the device
Operation,
max.
358.2
1)
339
1),
Error case,
max.
Volume
Max. [l]
1.26
1.23
1) Depending on the actuating pressure and volume of the actuator as well as the frequency of
control. The maximum flow rate is 470 Nl/min at a differential pressure of 7 bar.

Siemens SIPART Series Specifications

General

Brand	Siemens
Model	SIPART Series
Category	Accessories
Language	English