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Foxboro SRD991 Intelligent Valve Positioner Digital Accuracy with HART & Fieldbus Communication

Categories Pneumatic Control Valves
Brand Name: Foxboro
Model Number: Srd991
Place Of Origin: China
MOQ: 1
Price: 800USD~2000USD
Payment Terms: T/T
Supply Ability: 600Sets/Month
Delivery Time: 2 Weeks
Packaging Details: Wooden Box/Carton Box
Accessories: Solenoid Valve
Power: 0.2-2.2KW
Body Design: Short Pattern
Control Range: 0-100%
Temperature Of Media: Low Temperature
Air Supply: 1.4 To 6.0 Bar
Signal Communication: HART 5 Or 7 Over 4-20mA
Operating Media: Air/Gas/Liquid
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Foxboro SRD991 Intelligent Valve Positioner Digital Accuracy with HART & Fieldbus Communication

Meta Description & Product Overview


The Foxboro SRD991 Intelligent Valve Positioner is a state-of-the-art digital positioner designed for high-precision control of both linear and rotary actuators. Engineered by Schneider Electric (formerly Invensys Foxboro), this positioner supports HART® 7 and Foundation Fieldbus™ protocols, delivering advanced valve diagnostics, automatic calibration, and reliable performance in harsh environments. With its explosion-proof design and IP66 protection rating, the SRD991 is ideal for critical process control applications in industries such as oil & gas, power, chemicals, and water treatment.


Key Features


  • Digital Communication: Supports HART 5/6/7 and Foundation Fieldbus for seamless integration
  • Precise Valve Control: Exceptional linearity (±0.2%) and repeatability (±0.1%)
  • Built-in Diagnostics: Monitors valve health, actuator friction, air pressure, and more
  • Auto Calibration: One-touch setup simplifies commissioning and tuning
  • Explosion-Proof Certified: ATEX, FM, CSA, and IECEx approvals for hazardous locations
  • LCD Display Interface: Multilingual user interface for local configuration
  • Rugged Construction: IP66-rated aluminum housing with corrosion-resistant coating
  • Universal Mounting: Compatible with a wide range of linear and rotary actuators



Technical Specifications


ParameterSpecification
Input Signal4–20 mA with HART® communication
Communication ProtocolsHART 5/6/7, Foundation Fieldbus
Supply Pressure1.4 to 6.9 bar (20 to 100 psi)
Positioning Accuracy≤ ±0.2% linearity
Repeatability≤ ±0.1%
Response Time≤ 100 ms
Mounting TypeLinear and rotary actuators (NAMUR interface)
DisplayLCD screen with push-button control
DiagnosticsValve friction, air leakage, deviation monitoring
MaterialAnodized aluminum housing
Protection RatingIP66 / NEMA 4X
Operating Temperature–40 °C to +85 °C
Explosion-Proof CertificationsATEX, IECEx, FM, CSA (Zone 1 / Div 1)
Cheap Foxboro SRD991 Intelligent Valve Positioner Digital Accuracy with HART & Fieldbus Communication for sale
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