147-2000 | Positioning Relay, Pneumatic, Adj Start Point and Span, Rapid Response | Siemens

This 147 Positioning Relay is a compact, pneumatic, auxiliary device designed to provide positive positioning of a pneumatic valve or damper actuator. It operates at a very low bleed rate to minimize air consumption and provides a simplified adjustment of both starting pressure and operating span. The operating ambient temperature range is 35 to 160 degrees Fahrenheit.