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Yokogawa SDV531-S63/PRP Safety Digital Valve Positioner
- Product Introduction: It is a safety – related digital valve positioner designed for control valves in industrial processes. It is used to accurately control the valve opening according to the control signal from the safety instrumented system (SIS), ensuring the safe operation of the valve in emergency situations, and is compatible with FOUNDATION Fieldbus communication.
- Technical Specifications:
- Safety Integrity Level: SIL 3, compliant with IEC 61508 and IEC 61511.
- Input Signal: 4-20mA DC, FOUNDATION Fieldbus (PRP option).
- Output Signal: Pneumatic signal (0.02-0.1MPa).
- Valve Positioning Accuracy: ±0.5% of full stroke.
Detailed content
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- Valve Positioning Accuracy: ±0.5% of full stroke.
- Working Temperature: -40~85°C.
- Air Supply: 0.14-0.7MPa clean, dry air.
- Protection Level: IP66.
- Functional Characteristics:
- Safety control: Executes safety interlock commands quickly and accurately to move the valve to a safe position.
- Digital communication: Supports FOUNDATION Fieldbus for remote configuration, monitoring and diagnosis.
- Valve diagnostic: Monitors valve performance, air leakage and mechanical wear for predictive maintenance.
- High – precision positioning: Advanced control algorithms ensure stable and accurate valve position control even with fluctuating supply pressure.
- Explosion – proof design: Suitable for use in hazardous areas with appropriate certification.
- Application Scenarios: Applied in petroleum chemical, chemical, natural gas and other industries. It is used in safety – critical control loops such as emergency shutdown valves, blowdown valves and isolation valves, ensuring the safe shutdown of the production process in case of abnormal conditions.
