Spirax Sarco”s SP200 line of electropneumatic smart control valve positioners can be fitted to any of SSI’s pneumatic direct actuators. The positioner features simple installation and commissioning, adaptive valve control, and smart functions. Installation is simplified by the absence of mechanical linkages between valve stem and positioner and the smart auto-calibration function. Local calibration and parameter setting can be performed through menu-driven software with an integral keypad and a large, LCD alphanumeric data display. Valve commissioning is simplified through an auto-stroke routine and display of programming status, software travel switch status, 4-20mA input signal, and valve diagnostics. The tight pressure valve shutoff ensures cost savings by reducing air consumption, while the adaptive valve control automatically adjusts for changes in air supply pressure and stem friction to maintain accurate control. Hall effect, noncontact feedback of valve position provides accuracy and eliminates wear. The positioner features single/fail vent action and function with two-port or three-port valves. It offers linear, equal percentage and fast opening modes with an output capacity of five SCFM (8.5 Nm3/h) at 90 PSIG (6 barg). The positioner includes: anti-corrosive, die cast aluminum construction; a local LCD indicator; a NAMUR standard mounting kit for attachment to yoke- or pillar-mounted actuators; and an optional pressure gauge block. The positioner is dust tight and resistant to water jets with an IP65 protection rating and EMC standard 89/336EC compliance.