Foxboro SRD991-BDNS7EA4NY-V01 Intelligent Positioner with FIELDBUS communication. Foxboro Positioners, easy to install, control and monitor on any type of pneumatic valve actuators with the highest diagnostic level. With a complete range of accessories, valves can be fully equipped and your process optimized at its best.

Foxboro's Valve Positioners

SRD991 – Intelligent Valve Control – Intrinsically Safe (Ex ia)

The SRD991 offers the most advanced technology available on the market today. This includes a start-up in two steps only and a multilingual full-text graphic LCD for configuration and operation. These are all available within the various process automation applied communication protocols. 
The SRD991 offers enhanced applications and methods to analyze recorded stroke data. All the diagnostic features can be easily configured and displayed by the Positioner DTM (VALcare).
For application that do not allow leakage to occur, using bellow seal valves, Fugitive Emission Monitoring is the solution to avoid any serious emission from the packing (In conjunction with a pressure switch gauge, the positioner is able to detect any damaging leakage).
For the world of small actuators, the Top mounting positioner is designed for direct mounting on top of small actuators without yoke - Instead of the rotary potentiometer, a linear potentiometer is used that feeds back the actual position of the actuator.