IMI launches high-performance digital pneumatic positioner

IMI has launched a new high-performance digital pneumatic positioner to provide reliable safety functions for blowdown and emergency shutdown valve actuation in critical applications

With a patented algorithm and high output CV that delivers ultra-fast stroking times for enhanced safety performance, the SHP-SIS Safety Smart High-Performance Positioner is used in safety instrumented systems (SIS), working within pneumatic operating pressures of 2.5 to 10.5 bar (150 PSI) and ambient temperatures between -55 to 85°C (-67 to 186°F). The SHP-SIS’s built-in partial stroke testing (PST) and SOV diagnostic capabilities ensure compliance with functional safety requirements and assist in supporting preventative maintenance practices.

The positioner is designed with the ability to create a digital twin within the control system. This allows for faster online swap-overs during service periods, alongside online data monitoring and advanced online and offline diagnostics capabilities. Its digital twin technology also enables smart commissioning for faster set-up, with a complete digital inventory of valve configuration and performance history.

“Positioners are crucial to maintaining precise control and achieving the correct stem position,” said Roby Buyung, president of Process Automation at IMI. “In critical on/off applications, this control is even more vital if plant and operator safety is to be assured.

“It is for this reason that we have developed the SHP-SIS Safety Smart High-Performance Positioner as a solution that offers flexible installation types for single and double acting, as well as standard and remote mounting. Designed for safety engineered systems, the positioner’s adaptability further helps it fulfil its purpose as a reliable function for blowdown and emergency shutdown valve actuation.”

The SHP-SIS is available in low copper aluminium housing or 316 stainless steel and a painted option for harsh operating conditions. It includes a contactless travel sensor and tough touchscreen interface, with fully encapsulated electronics tested for high vibration and reliability. It is TUV-certified for SIS applications and is certified according to IEC 61508:2010 up to SIL 3.

“It is imperative that operators can act quickly and decisively during emergency shutdowns and blowdown events,” concluded Buyung. “The SHP-SIS gives operators the tool they need to ensure best possible performance and compliance with all-important safety standards. It is durable and functional, allowing for more efficient maintenance in even the most demanding plant environments.”