A 4-20mA proportional electric actuator is a control device that provides movement proportional to the input signal. In this system, the actuator precisely adjusts its position based on the 4-20mA signal it receives. It operates at the minimum position at low current values and at the maximum position at high current values. This feature allows equipment such as valves to operate at intermediate positions as well. In other words, the system can be controlled not only in fully open or closed states but also proportionally. This enables precise adjustment of flow, pressure, or temperature in processes. Continuous feedback based on the control signal minimizes position errors.
Where to use?
These types of actuators are widely preferred in automation systems that require precise control. They are especially used in process industries, power plants, and chemical production lines. They can also be used in HVAC systems to adjust airflow accurately. They provide ideal solutions for applications such as flow control in water treatment plants and dosing in chemical facilities. With the advantages of remote control and integration with automation systems, efficiency can be increased. UNOX 4-20mA proportional electric actuator models fully meet these requirements.
Technical Structure and General Features
It includes an electronic control unit sensitive to the 4-20mA signal range. Its body is made of sturdy aluminum and has an IP67 protection rating, allowing it to operate safely in dusty and humid environments. Torque adjustment is set at the factory and can be manually readjusted if necessary. The connection standard is ISO 5211, making it compatible with many valves. Electrical connection is provided via a ½” water-resistant cable entry. The operating temperature range spans from -10°C to +80°C. In emergencies, manual intervention is possible thanks to the handwheel and position indicator.
Why Is a 4–20 mA Proportional Actuator Preferred?
It is an ideal choice for those who want precise control and integration with automation systems. It offers energy efficiency and makes process control more reliable. Additionally, it requires minimal maintenance and provides long-lasting performance. The locally manufactured actuators by UNOX combine quality with affordability. On top of all this, access to spare parts and technical support is very convenient.
4-20mA Proportional Electric Actuator
