SIEMENS SIPART PS2 in compact design One that masters everything New & Original with very competitive price
The SIPART PS2 has grown to become the most widely used positioner for linear and rotary actuators.
Optionally available with Makrolon, aluminum, stainless or flameproof steel enclosure,
the positioner is well-equipped for all ambient conditions. It has proved reliable in many valve control applications
thanks to its diagnostics capability and extensive range of functions.
SIPART PS2 in stainless steel enclosure with pressure gauge
The SIPART PS2 electropneumatic positioner is used to control the final control element of pneumatic linear or part-turn actuators.
The electropneumatic positioner moves the actuator to a valve position corresponding to the setpoint.
Additional function inputs can be used to block the valve or to set a safety position. A binary input is present as standard in the basic device for this purpose.
SIPART PS2 positioners offer decisive advantages:
Simple installation and automatic commissioning (self-adjustment of zero and span)
Simple operation with:
Very high-quality control thanks to an online adaptation procedure
Negligible air consumption in stationary operation
"Tight closing" function (ensures maximum positioning pressure on the valve seat)
"Fail in place" function: Current position is retained on failure of auxiliary electrical power and/or pneumatic failure (does not apply in conjunction with SIL).
Example: For an actuator with a volume of 8 liters, the typical position stability of a SIPART PS2 with "Fail in place" is 0.3% per hour.
Numerous functions can be activated by simple configuring (e.g. characteristic curves and limits)
Extensive diagnostic functions for valve and actuator
Only one device version for linear and part-turn actuators
Few moving parts, hence insensitive to vibrations
External non-contacting sensor as option for extreme ambient conditions
"Intelligent solenoid valve": Partial Stroke Test and solenoid valve function in a single device
Partial Stroke Test e.g. for safety valves
Full Stroke Test, Multi Step Response Test, Valve Performance Test for performance and maintenance evaluation of the valve
Can also be operated with purified natural gas, carbon dioxide, nitrogen or noble gases
SIL (Safety Integrity Level) 2
The SIPART PS2 positioner is used, for example, in the following industries:
Paper and glass
Water, waste water
Food and pharmaceuticals
The SIPART PS2 positioner can be used with all pneumatic actuators and is available for delivery:
In various enclosure designs and various materials (polycarbonate, aluminum, and stainless steel)
For non-hazardous applications
For hazardous applications in the versions
Intrinsic safety type of protection
Flameproof enclosure type of protection
Non-sparking type of protection
Type of protection dust explosion protection by enclosure
and in the versions:
With 0/4 ... 20 mA control with/without communication through HART signal
With PROFIBUS PA communication interface
With FOUNDATION Fieldbus (FF) communication interface
Device with "intrinsic safety" type of protection for use in Zone 1, 2, 21, 22 or Class I, II, III/Division 1/Groups A-G
Device with "dust explosion protection by enclosure" type of protection for use in Zone 21, 22 or Class II, III/Division 1/Groups E-G
Device with "non-sparking" type of protection for use in Zone 2 or Class I, Division 2, Groups A-D
Device with "flameproof enclosure" type of protection for use in Zone 1 or Class I, Division 1, Groups A-D
Stainless steel enclosure for extreme ambient conditions
The SIPART PS2 is available in a stainless steel enclosure (with no window in the cover) for use in particularly
aggressive environments (e.g. offshore operation, chlorine plants etc.). The device functions are the same as for the basic version.