ELECTRO PNEUMATIC ROTARY POSITIONER
“aline” Make Electro Pneumatic Rotary Positioner is a high-precision control device designed to accurately position pneumatic rotary actuators in response to an electrical input signal. It converts a 4–20 mA control signal into a proportional pneumatic output, ensuring precise valve positioning for modulating control applications. The positioner continuously compares the input signal with the actual valve position and automatically adjusts the actuator until the desired position is achieved.
Engineered for superior accuracy, fast response, and long-term reliability, the ALINE Electro Pneumatic Rotary Positioner is ideal for controlling Ball Valves, Butterfly Valves, Plug Valves, Dampers, and other quarter-turn pneumatic actuators. Its rugged aluminium housing, weather-resistant construction, and low air consumption make it suitable for demanding industrial environments.
The positioner is widely used in Chemical Plants, Oil & Gas, Petrochemical Industries, Water Treatment, Power Plants, Food & Beverage, Pharmaceutical, Paper Mills, Steel Plants, Textile Industries, and General Process Automation, where accurate flow control and dependable valve modulation are essential.
Product Features:
- High Positioning Accuracy
- Fast Response Time
- Rotary Quarter-Turn Design
- 4–20 mA Input Signal
- Low Air Consumption
- Zero & Span Adjustment
- Simple Calibration
- Compact and Rugged Construction
- Aluminium Die-Cast Housing
- Corrosion Resistant Finish
- Stable and Repeatable Performance
- Suitable for Continuous Modulating Duty
- Easy Installation and Maintenance
- Long Service Life
Technical Specifications:
| Parameter | Details |
|---|---|
| Product Type | Electro Pneumatic Rotary Positioner |
| Action | Rotary / Quarter Turn |
| Input Signal | 4–20 mA |
| Supply Air Pressure | 1.4 to 7 Bar |
| Output Pressure | Proportional to Input Signal |
| 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% F.S. |
| Hysteresis | ≤1% |
| Repeatability | ±0.5% |
| Ambient Temperature | -20°C to +80°C |
| Mounting | NAMUR Standard Rotary Actuator Mounting |
Standard Features:
- Electro-Pneumatic Control
- High Precision Valve Positioning
- Low Air Consumption
- Adjustable Zero and Span
- Rugged Industrial Design
- Corrosion Resistant Housing
- Stable Performance
- Easy Calibration
- Long Operating Life
- Suitable for Rotary Pneumatic Actuators
Optional Features:
- Explosion Proof Version
- Intrinsically Safe Model
- Stainless Steel Pressure Gauge
- Stainless Steel Mounting Kit
- Feedback Transmitter (4–20 mA)
- Limit Switch Option
- Position Feedback Output
- High Temperature Version
Applications:
- Pneumatic Ball Valves
- Pneumatic Butterfly Valves
- Plug Valves
- Damper Control Systems
- Process Control Valves
- Chemical Processing Plants
- Oil & Gas Industry
- Petrochemical Plants
- Water & Wastewater Treatment
- Food & Beverage Industry
- Pharmaceutical Industry
- Power Plants
- Steel & Cement Plants
- Paper & Pulp Industry
- General Industrial Automation