The Foxboro SRD960, SRD991, and SRD998 Smart Positioners are reliable digital solutions for valve automation, featuring advanced diagnostics and robust performance for rotary and linear actuators. The SRD960 provides essential control with basic diagnostics, the SRD991 adds HART communication and partial stroke testing for integrity checks, and the SRD998 offers comprehensive valve signature analysis for predictive maintenance. Built for harsh environments with IP66 protection and hazardous area certifications, these positioners support oil and gas, chemical, and power industries, ensuring safe, efficient operation and reduced downtime.
| Parameter | SRD960 | SRD991 | SRD998 |
|---|---|---|---|
| Input Signal | 4-20 mA | 4-20 mA HART | 4-20 mA HART |
| Air Supply | 1.4–7 bar (20–100 psi) | 1.4–7 bar (20–100 psi) | 1.4–7 bar (20–100 psi) |
| Stroke Range | Linear: 10–100 mm; Rotary: 90–120° | Linear: 10–100 mm; Rotary: 90–120° | Linear: 10–100 mm; Rotary: 90–120° |
| Accuracy | ±0.5% FS | ±0.3% FS | ±0.3% FS |
| Temperature Range | -40°C to +80°C (-40°F to +176°F) | -40°C to +80°C (-40°F to +176°F) | -40°C to +80°C (-40°F to +176°F) |
| Enclosure Rating | IP66 | IP66 | IP66 |
| Certifications | ATEX, FM, CSA | ATEX, FM, CSA, SIL 2 | ATEX, FM, CSA, SIL 2 |
| Power Consumption | Low (<1W) | Low (<1W) | Low (<1W) |
| Diagnostics | Basic travel deviation | Valve signature, partial stroke | Advanced diagnostics, PST |
The Foxboro SRD960, SRD991, and SRD998 Smart Positioners are optimized for reliable valve control in process industries:
It verifies valve operability without full travel, ensuring readiness for emergency shutdowns (SRD991, SRD998).
Yes, modular design allows easy upgrades from SRD960 to SRD991 or SRD998.
It captures valve performance data to diagnose issues like friction or deadband (SRD998).
Yes, with low air consumption and power usage, they support sustainable operations.
HART protocol (SRD991, SRD998) enables seamless communication with DCS and PLC systems.
Contact our team for inquiries about the Foxboro SRD960, SRD991, and SRD998 Smart Positioners, pricing, or to schedule a demo:
