Digital guide
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Yokogawa UD1AG3‑050N‑D‑2TA‑N
- Product Name: UD Series Digital Positioner / Valve Controller
- Product Series: UD Series Intelligent Valve Positioners
- Product Brief: Intelligent electro‑pneumatic valve positioner for regulating industrial control valves, 050N denotes 50 mm stroke range, D denotes digital control type, 2TA denotes dual feedback sensor configuration, N denotes standard industrial version.
Detailed content
- Technical Specifications:
- Input Signal: 4–20 mA DC standard analog control signal
- Stroke Range: 0–50 mm linear stroke
- Feedback Type: Dual contactless position feedback sensors
- Air Supply Pressure: 0.4–0.7 MPa clean dry compressed air
- Control Accuracy: ±0.5% full stroke
- Functional Features: Auto‑calibration, PID valve position control, fault self‑diagnosis, partial stroke test, anti‑hunting control, HART communication optional
- Performance Parameters: Operating temperature: −20–70 °C; IP67 protection grade; explosion‑proof variant available per customer requirement
- Material Composition: Housing: die‑cast aluminum alloy with anti‑corrosion coating; internal diaphragm: high‑temperature resistant silicone rubber; sensor housing: stainless steel
- Structural Characteristics: Compact on‑valve mounting structure; modular pneumatic and electronic components; dual feedback sensor redundancy design
- Working Principle: Receive analog control signal, compare with valve stroke feedback signal, adjust pneumatic output pressure to drive actuator, realize precise valve position regulation
- Advantage Highlights: High control precision, dual feedback redundancy, strong anti‑corrosion capability, wide operating temperature range, self‑calibration function
- Applicable Industries: Oil & gas, petrochemical, chemical processing, power generation, water treatment, natural gas pipeline control
- Installation Requirements: Direct mounting on linear pneumatic actuators; ensure clean dry air supply; proper grounding for electromagnetic interference suppression
- Usage Precautions: Regularly clean air filter element; avoid overpressure air supply; inspect feedback sensor calibration periodically
