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Common faults of pneumatic control valve

Pneumatic control valve uses compressed air as the power source, cylinder as the actuator, and drives the valve with the help of valve positioner, converters and other accessories to realize switching or proportional adjustment, and accepts the control signal of the industrial automation control system to regulate flow, pressure, temperature and other process parameters of the fluid in the pipeline. At present, pneumatic control valves are widely used in petrochemical, electric power, metallurgy and other process industries, and are an indispensable and important tache in the control system. Therefore, it is very important to ensure the stable and reliable operation of the pneumatic control valve. When the pneumatic control valve fails, it can be checked according to the common faults of the control valve, to find the reason of the fault in time.

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Correct selection of regulating valve

In the field of industrial automatic control, whether the process can meet the requirements of various process control index, make the control process be stable, safe, efficient, and produce qualified products, the regulating valve is a key equipment, therefore, a high-quality control valve with good quality, excellent flow characteristics, small leakage, and reliable and smooth action is selected to make production run smoothly and reduce labor intensity.
The regulating valve is installed on the process pipeline, directly contact with the operating medium, and is affected by harsh working conditions such as high temperature, high pressure, corrosion and friction for a long time. Therefore, the quality of the regulating valve has a great influence on the system control. Therefore, the correct and reasonable choice is particularly important.

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Industrial Ethernet, Fieldbus, Industrial Wireless, which is the mainstream?

Industrial Ethernet, Fieldbus, and Industrial Wireless are the three mainstream technologies in the field of industrial communication. Blend Fieldbus, Ethernet, Embedded Technology and Wireless Communication Technology into Control Network, while ensuring the stability of the system, it also enhances the openness and interoperability of the system, thereby helping enterprises to speed up the development of new products, reduce production costs, and improve information services. Accompany with the increasing demand of human beings for communication, the network has become an indispensable means of transmission.
With the increase of network applications, there will be more and more disputes that who will become the main mode of industrial communication in the future. So which communication mode will be the mainstream in the future?

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