SA/CL is an analog positioner available in a pneumatic and electro-pneumatic version. The positioner has a heavy duty design making it suitable for use in very harsh conditions. It is used as the control part of the pneumatic valve set in oil and gas, refining, chemical, power, metal production and other fields with automated systems. The UP-2 pneumatic version accepts a 3-15 psi (0.2-1 bar) signal and the electro-pneumatic version a 4-20 mA signal.
When using the electro-pneumatic version an I/P converter is installed on the pneumatic positioner which allows an electric signal to pilot the positioner. It is based on the balanced-forces principle; air distribution to actuator chambers is executed by an internal spool. The SA/CL is designed to be used for applications on linear actuators with a stroke length of over 70mm. This positioner is double acting but can also be used as single acting if required.
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Input Signal 3-15 psi 4-20 mA |
Standard operating temperature -20°C to 70°C (lower or higher temperature on request) |
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CV max low flow ND 1/4” Inlet = 0.34 ND 1/4” Outlet = 0.34 ND 1/2” Inlet = 0.637 ND 1/2” Outlet = 0.79 |
Air consumption ND 1/4” 1.02 Nm3/h (0.6 SCFM) at 400 kPa ND 1/2” 1.04 Nm3/h (0.8 SCFM) at 400 kPa +0.09 Nm3/h (0.06 SCFM) for version with I/P
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Feeding connection ND 1/4” Model SA/CL-2 ND 1/2” Model SA/CL-1 |
Electrical connection ND 1/2” NPTF
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Supply pressure 2.5÷7 bar |
Hysteresis 0.5% of full stroke |
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Linearity 1% of the full stroke |
Sensitivity 0.2% of signal range |
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Accessories available Air-Lock ND 1/4” integrated Change-over plate with by-pass valve Customised cam Intrinsically safe and explosion-proof electro-pneumatic version for ATEX execution Pressure gauges Special construction for corrosive environment |
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