These positioners include integrated stroke-testing
The Trovis Safe Series of positioners has been optimized for use with on/off valves in safety-instrumented systems, and is certified to comply with Safety Integrity Level (SIL) requirements. Partial-stroke testing capabilities are integrated into the positioners, which allow for early fault detection in pneumatic shutoff valves. Partial-stroke testing can be started either manually or automatically. Test data are saved in the positioner, and the condensed state indicates the valve status. Other features of Trovis Safe positioners include discrete signal analysis and ready-configured parameters for shutoff valves. Hall 11.1, Stand C75 — Samson AG, Frankfurt am Main, Germany