Alliance Sensors PGHD-0203 Displacement Sensor

Product Description

PGHD-0203 is a Heavy-Duty (HD) LVDT (Linear Variable Differential Transformer) from Alliance Sensors PG series. The code 0203 defines the measuring stroke range of 2 to 3 inches (approx. 50–75 mm). It is engineered specifically for steam turbine valve position control. With robust heavy-duty construction, it withstands high temperature, heavy vibration and shock on turbine deck. Working on non-contact LVDT principle, there is no mechanical wear for long service life. It provides valve position feedback for steam control valves, main stop valves and hydraulic actuators. The output signal feeds into turbine DEH control system, serving as critical spare part for turbine control loop in thermal & gas power plants.

Key Specifications

1. Part No.: PGHD-0203, PG Series HD (Heavy Duty) LVDT
2. Measuring Stroke: 2 ~ 3 inches (50 mm ~75 mm)
3. Measurement Principle: LVDT linear variable differential transformer, non-contact
4. Typical Use: Position feedback for turbine main stop valve, control valve and hydraulic actuator
5. Construction Grade: HD heavy duty, high vibration & shock resistance
6. Rod Coupling: Optional Ball Joint (BJ) or Rigid Nut (RN)
7. Operating Environment: High temperature, oil contamination and heavy vibration on turbine deck
8. Features: Wear-free, excellent long-term stability for continuous position monitoring
9. Compatible System: Turbine DEH (Digital Electro-Hydraulic) control system
10. Market Position: Alternative spare part for Bently, Solartron turbine LVDTs

Application

• Valve position measurement and feedback for steam control valves, main stop valves and hydraulic actuators in thermal power plants & gas turbines
• Closed-loop DEH turbine control, real-time acquisition of valve travel position signal
• Unit retrofit and replacement of aged LVDT spare parts for existing power units
• Predictive maintenance for power station assets, valve position fault early warning, stabilize turbine regulation performance
• Actuator position monitoring for petrochemical drive turbines and large industrial steam turbines

PG Series Family Models

• PGHD-0203: Heavy Duty LVDT, 2~3 inch stroke
• PGHD-0406: Heavy Duty LVDT, 4~6 inch stroke
• PGHD-0609: Heavy Duty LVDT, 6~9 inch stroke
• PGHD-0912: Heavy Duty LVDT, 9~12 inch stroke
• PGHD-1215: Heavy Duty LVDT, 12~15 inch stroke
• PGSD-0203: Super Duty (SD) LVDT, 2~3 inch stroke