In conclusion, first of all, don't be afraid to suspect that there is a problem with your signal. This is not the case in the regulating valve I used in debugging. For DCS, only two signals are needed, one is AO 4~20MAD C output, and the other is AI 4~20MADC input. As long as the AO signal you output is OK, the rest must be the valve, AI is only used as valve feedback, so there is little chance of problems. The control module of the regulating valve often has problems. It is recommended that you check the grounding terminal of the regulating valve, which often causes module control problems

In order to flexibly handle the use of machinery and equipment in the process of using many machinery and equipment or pipelines, a valve is usually installed on the equipment. Of course, different valves play different roles. What should we pay attention to when installing the electric control valve? For this problem, a detailed analysis will be carried out so that everyone can understand it clearly.