Electric actuator automatic control valve

The biggest advantage of automatic control valves is that they can be operated remotely, which means that operators can sit in the control room to control the production process without the need to physically operate the valve on and off. People only need to lay some pipelines to connect the control room and the actuator, and the driving energy directly excites the electric or pneumatic actuator through the pipeline, usually using a 4-20mA signal to feedback the position of the valve.
Continuous control
If the actuator is required to control parameters such as liquid level, flow rate, or pressure in the process system, which requires frequent action of the actuator, a 4-20mA signal can be used as the control signal, but this signal may change as frequently as the process. If an actuator with very high frequency action is required, only select a special adjustable actuator that can start and stop frequently. When multiple actuators are required in a process, they can be connected by using a digital communication system, which can greatly reduce installation costs. Digital communication circuits can quickly and efficiently transmit commands and collect information. There are various communication methods such as FOUNDATIONFIELDBUS, PROFIBUS, DEVICENET, HART, and PAKSCAN designed specifically for valve actuators. Digital communication systems can not only reduce investment costs, but also collect a large amount of valve information, which is very valuable for predictive maintenance procedures of valves.