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Multi-Turn On-off Actuator Of The Implementing Agency
- Aug 15, 2017 -

With the development of science and technology, Multi-Turn On-off Actuator automation equipment has been accelerating the development. Each of the industrial areas out of the traditional operations to upgrade to automatic control. Each valve is also the valve from the process valve to the instrument valve conversion, Multi-Turn On-off Actuator instrumentation valve is the need for the previous process design and calculation of the appropriate choice of the implementing agencies and valves in order to ensure the use of the late.

The most widely defined definition for an actuator is a drive that provides linear or rotational motion, which utilizes electricity or gas as the driving energy and operates under a control signal such as current or voltage to achieve the opening of the valve. Multi-Turn On-off Actuator Although most of the actuators are used to switch valves, today's actuators are designed to go beyond simple switching functions, including position sensing devices, Multi-Turn On-off Actuator torque sensing devices, electrode protection devices, logic control devices, digital communication modules And PID control module, etc., and these devices are all installed in a compact shell.

Because more and more plants use automated control, manual operation is replaced by mechanical or automated equipment, requiring the actuator to act as an interface between the control system and the mechanical movement of the valve, requiring the actuator to enhance work safety performance and Environmental protection performance. In some dangerous situations, automated actuator devices can reduce the damage of personnel. Multi-Turn On-off Actuator Some special valves require emergency opening or closure in exceptional circumstances, and the valve actuator prevents further spread of the risk and minimizes plant losses. For some high-pressure large-diameter valves, the required actuator output torque is very large, then the required actuator must improve the mechanical efficiency and the use of high-output motor, so smooth operation of large diameter valves.

The biggest advantage of the automatic control valve is that the valve can be operated remotely, which means that the operator can sit in the control room to control the production process without having to visit the site to manually operate the valve on and off. People only need to lay some pipelines to connect control rooms and actuators, driving energy through the pipeline directly to stimulate electric or pneumatic actuators, Multi-Turn On-off Actuator usually with 4-20mA signal to feedback the position of the valve.

If the actuator is required to control the level of the process system, flow or pressure and other parameters, which is required to perform frequent action of the actuator, you can use 4-20mA signal as a control signal, but this signal may be as frequent as the process change. If you need a very high frequency action of the implementing agencies, only the choice of a special start and stop the regular actuator. When multiple actuators are required in a process, it is possible to connect the various actuators by using a digital communication system, Multi-Turn On-off Actuator which can greatly reduce the installation cost. The digital communication loop can quickly and efficiently deliver instructions and collect information. There are a variety of communication methods such as: FOUNDATION FIELDBUS, PROFIBUS, DEVICENET, HART and designed for the valve actuator PAKSCAN and so on. Digital communication systems can not only reduce investment costs, they can also collect a lot of valve information, Multi-Turn On-off Actuator the information for the valve's predictive maintenance program is very valuable.