The Foxboro SRD991 is a HART-enabled intelligent valve positioner designed for precise pneumatic control in industrial automation. Part of Foxboro's SRD series, it combines advanced diagnostics with robust construction to ensure reliable performance in critical processes. Compatible with Foxboro pneumatic control valves, this device supports seamless integration with plant automation systems.
Parameter | Specification |
---|---|
Input/Output | 4-20mA DC (HART 7), pneumatic output 0.2-1 bar |
Accuracy | ±0.5% full scale (linear), ±0.8° (rotary) |
Communication | HART 7, optional Foundation Fieldbus |
Power Supply | 18-30V DC (loop-powered) |
Environmental Rating | IP66, NEMA 4X |
Temperature Range | -40°C to 85°C (-40°F to 185°F) |
Certifications | ATEX, IECEx, CSA, SIL 2 (optional) |