Masoneilan SVI II Advanced Performance Digital Valve Positioner
Cutting-Edge Technology for Critical Industrial Processes
The Masoneilan SVI™ II AP (Advanced Performance) is a state-of-the-art digital valve positioner engineered to deliver unmatched precision, reliability, and diagnostic capabilities for industrial automation. Intelligent device combines advanced 32-bit microprocessor technology with rugged design to optimize valve performance in harsh environments.
Key Features
Non-Contact Feedback System The SVI II AP employs a linkage-free, magnetic strip feedback mechanism that eliminates mechanical wear, ensuring consistent accuracy over extended periods. This design is particularly advantageous in high-vibration or corrosive settings, where traditional contact-based systems fail prematurely.
Multi-Protocol Communication Supports HART® protocol for bidirectional communication, enabling remote access to valve status, diagnostics, and configuration. This reduces personnel exposure to hazardous areas while providing real-time data integration with DCS/PLC systems.
Extreme Environment Resilience With an operating temperature range of -40°C to 85°C and IP66/IP67 protection, the SVI II AP withstands extreme conditions, including humidity, dust, and temperature fluctuations. Optional low-temperature variants (-52°C) are available for cryogenic applications.
Advanced Diagnostics Built-in diagnostics monitor valve health in real time, detecting issues like friction, hysteresis, and actuator degradation. The intuitive LCD interface and pushbuttons allow for quick troubleshooting, even in hazardous zones.
Modular Design & Compatibility Field-replaceable components simplify maintenance, while the compact housing minimizes space requirements. The SVI II AP is compatible with Masoneilan and third-party actuators (single/double-acting), including sliding-stem and rotary types, via NAMUR NE 43/47 interfaces.
Industry Applications
The SVI II AP excels in diverse sectors, including:
Oil & Gas: Ensures reliable control in offshore platforms, refineries, and LNG terminals. Its high flow capacity and rapid response time make it ideal for critical applications like compressor anti-surge control.
Power Generation: Used in steam turbine control systems and condenser applications, where precise positioning is essential for grid stability and energy efficiency.
Chemical Processing: Handles corrosive media and high-pressure environments, as demonstrated in a 300,000-ton/year acetic acid plant where it maintained ±0.5% control precision over three years.
Safety-Critical Systems: The SVI II ESD (Emergency Shutdown Device) variant meets SIL 3 requirements, providing fail-safe operation for emergency shutdown valves in hazardous areas.
