Description

SRD991‑BHNS7EA4NY‑V01 Intelligent Valve Positioner

Technical Specifications

• Product Model: SRD991‑BHNS7EA4NY‑V01
• Brand: Foxboro / Eckardt
• Warranty: One Year
• Input Signal: 4‑20 mA analog control signal with HART 7 communication
• Operating Temperature: ‑40 °C ~ +85 °C
• Storage Temperature: ‑40 °C ~ +85 °C
• Response Time: Position adjustment response ≤ 1 s
• Protection Class: IP66 / NEMA 4X field‑housing
• Accuracy Class: ±0.2 % full‑span positioning accuracy
• Output Frequency: Not applicable
• Air Supply Pressure: 1.4‑6.9 bar (20‑100 psi) instrument air
• Housing Material: Anodized aluminum alloy
• Mounting: NAMUR / ISO 5211 for linear & rotary valve actuators
• Communication: HART 7 digital protocol
• Diagnostics: Valve friction monitoring, air‑leakage detection, travel deviation alarm, local LCD display
• Certifications: ATEX, IECEx intrinsically‑safe certification, CE, FM
• Humidity: 5‑95 % RH, non‑condensing
• Weight: 1.7 kg (single‑acting version)
• Dimensions: Standard field‑positioner housing dimension
• 

Product Overview

SRD991‑BHNS7EA4NY‑V01 is a microprocessor‑based intelligent HART valve positioner for process‑control valve actuators. It receives 4‑20 mA set‑point signal from DCS / PLC and precisely adjusts pneumatic output to control valve stem position. Auto‑calibration and self‑tuning PID functions simplify commissioning. Built‑in advanced valve diagnostics support predictive‑maintenance for process‑plant control loops. This field‑proven positioner is widely used in petrochemical, oil‑gas and power‑plant control‑valve loops. Available as new‑old‑stock and refurbished spare parts for plant‑maintenance and valve‑retrofit work.

Application Notes

‑ Use clean dry instrument air within specified supply‑pressure range. ‑ Complete auto‑calibration after mechanical mounting on valve actuator. ‑ Follow intrinsic‑safety wiring rules for hazardous‑area installation. ‑ Typical deployment: refineries, chemical‑plants, natural‑gas processing control‑valve spare‑part stocking.