Details

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FOXBORO SRD998-HBD0-B0S-1SA18-A1 is a high-performance smart valve positioner with HART communication, designed for precise control of pneumatic actuators in demanding process automation environments.

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🧠 FOXBORO SRD998-HBD0-B0S-1SA18-A1 Smart Valve Positioner

The SRD998 series from Foxboro (Schneider Electric) represents a class of intelligent valve positioners that combine advanced diagnostics, auto-calibration, and HART 7 communication for seamless integration into modern control systems. The HBD0-B0S-1SA18-A1 configuration offers a robust aluminum housing, LCD display, and single-acting pneumatic operation.

🔧 Key Specifications

• Communication Protocol: HART 7, 4–20 mA
• Operation Type: Single-acting pneumatic actuator
• Input Pressure: 1.4 to 10 bar (20 to 150 psi)
• Stroke Range: 2 to 260 mm
• Operating Angle: 0° to 95° (up to 120° optional)
• Linearity: < 0.6% of full span
• Hysteresis: < 0.3%
• Display: Full-text multilingual graphical LCD with rotary selector
• Diagnostics: Auto-start, self-calibration, position and response histograms, step response analysis
• Ambient Temperature: –40°C to +85°C
• Housing Material: Powder-coated aluminum alloy
• Pneumatic Connection: 1/4" NPT (G1/4)
• Electrical Entry: M20 × 1.5 or 1/2" NPT
• Protection Rating: IP66 / NEMA 4X
• Mounting: IEC 534 / NAMUR standard

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✅ Application Areas

• Control of globe, rotary, and diaphragm valves
• Oil & gas, chemical, water treatment, and power generation sectors
• Predictive maintenance and remote diagnostics in DCS environments
• Integration with Schneider Evo™, I/A Series™, and FDT/DTM tools

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🔁 Related SRD998 Variants

Model Code Suffix	Key Differences
SRD998-HBD0-B0S-1SA18-A2	Same as A1 but with extended diagnostics
SRD998-HBD0-B0S-2DA18-A1	Double-acting actuator version
SRD998-HBD0-B0S-1SA28-A1	With ATEX/IECEx explosion-proof certification
SRD998-HBD0-B0S-1SA18-A0	Without LCD display

All models share:

• Modular design for easy maintenance
• Advanced diagnostics for valve health monitoring
• HART 7 compatibility for seamless DCS integration

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