When anyone chooses an electric butterfly valve, we also need to pay attention to the methods used and the quality. The specific quality of different products will be different. We can really understand these practical methods and pay more attention to the whole quality, so the future results will be very good. So everyone should actively consider this aspect in the process of doing, Do not neglect some specific quality in this process, or we will encounter various troubles in the process of using when the quality is poor. These are the problems that we need to pay attention to in the process of selection. If we can correctly understand all aspects and learn some relevant things, it will be good for the whole future results. If you can do all the work carefully in these aspects in the process of doing it, you will believe that it is really good for you, so no matter what the situation is, everyone needs to pay more attention, otherwise it will directly affect the future results, or there is no way to make the right choice.

The controller compares the standard signal output from the detection and transmission link with the set value signal to obtain the deviation signal, and calculates the deviation signal according to certain control laws. The calculation output is sent to the actuator. The controller can be realized by analog instruments or digital controllers composed of microprocessors, such as the PID control function module used in DCS and FCS. The actuator is in the final position of the control loop, so it is also called the final element. The actuator is used to receive the output signal of the controller and control the change of control variables.