Seeking help regarding the symbols of automatic control and their control mechanisms in PID diagrams
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This post was last edited by dzsunshubin on 2017-2-20 at 20:26. What do LT, LIA, LFU, etc. in the image mean? Additionally, what is the mechanism behind level control? Are there any relevant materials on this topic? Could you recommend some? I would appreciate your guidance. Thank you.
Baidu has tried it, but I don’t know how to describe it. Also, I’d like more experienced people to give some advice.
LT level transmitter, LIA level indication and alarm, LFU – custom; you need to refer to the legend symbols for details
LT: liquid level transmission; LIA: liquid level indication and alarm; LFU: custom – you need to refer to the legend symbols for details
Learn about the functional indicators and graphic symbols for process measurement and control instruments as specified in HG/T 20505-2014
Just look at the rules on the home page and you’ll understand
The legend in the PID homepage image provides explanations
Check the image on the home page; for the specific mechanisms, refer to professional books on chemical process instrumentation and automatic control