ELECTRO PNEUMATIC LINEAR POSITIONER
“aline” Make Electro Pneumatic Linear Positioner is a high-performance valve control device designed to provide accurate positioning of linear pneumatic actuators based on an electrical input signal. It converts a 4–20 mA control signal into a proportional pneumatic output, enabling precise and stable control of linear control valves. The positioner continuously compares the input signal with the actual valve stem position and automatically adjusts the actuator until the desired valve position is achieved.
Designed for superior accuracy, fast response, and long-term reliability, the ALINE Electro Pneumatic Linear Positioner is ideal for Globe Valves, Control Valves, Angle Seat Valves, Diaphragm Valves, Gate Valves, and other linear motion pneumatic actuators. Its rugged aluminium housing, weather-resistant design, and low air consumption ensure dependable operation in demanding industrial environments.
The positioner is widely used in Chemical Plants, Oil & Gas, Petrochemical Industries, Water Treatment, Power Plants, Pharmaceutical, Food & Beverage, Paper Mills, Steel Plants, Textile Industries, and Process Automation Systems, where precise valve modulation is essential.
Product Features:
- High Precision Linear Valve Positioning
- 4–20 mA Input Signal
- Fast Response Time
- Excellent Positioning Accuracy
- Low Air Consumption
- Zero & Span Adjustment
- Stable and Repeatable Performance
- Compact and Rugged Aluminium Housing
- Corrosion Resistant Construction
- Easy Calibration
- Weather Resistant Design
- Long Service Life
- Suitable for Continuous Modulating Control
Technical Specifications:
| Parameter | Details |
|---|---|
| Product Type | Electro Pneumatic Linear Positioner |
| Actuator Type | Linear Pneumatic Actuator |
| Input Signal | 4–20 mA |
| Supply Air Pressure | 1.4 to 7 Bar |
| Output Signal | Proportional Pneumatic Output |
| Air Connection | 1/4″ BSP / NPT |
| Electrical Connection | 1/2″ NPT Cable Entry |
| Housing Material | Die-Cast Aluminium |
| Protection Class | IP67 / IP68 (Optional) |
| Linearity | ±1% Full Scale |
| Repeatability | ±0.5% |
| Hysteresis | ≤1% |
| Ambient Temperature | -20°C to +80°C |
| Mounting | Standard Linear Actuator Mounting Kit |
Standard Features:
- Accurate Linear Valve Position Control
- High Sensitivity
- Low Air Consumption
- Easy Zero & Span Adjustment
- Rugged Industrial Construction
- Corrosion Resistant Housing
- Stable Output Performance
- Long Operational Life
- Easy Installation and Maintenance
- Suitable for Continuous Duty Applications
Optional Features:
- Explosion Proof Version
- Intrinsically Safe Version
- Stainless Steel Pressure Gauge
- Stainless Steel Mounting Bracket
- 4–20 mA Position Feedback Transmitter
- Limit Switch Feedback
- High Temperature Version
- Special Corrosion Resistant Coating
Applications:
- Pneumatic Globe Control Valves
- Pneumatic Globe Valves
- Pneumatic Angle Seat Valves
- Pneumatic Diaphragm Valves
- Pneumatic Gate Valves
- Steam Control Systems
- Chemical Processing Plants
- Oil & Gas Industry
- Petrochemical Plants
- Water & Wastewater Treatment
- Pharmaceutical Industry
- Food & Beverage Industry
- Power Plants
- Steel & Cement Plants
- Paper & Pulp Industry
- General Industrial Automation