I have a question regarding the wiring of electromagnetic flowmeters! ! !
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The MAGYN type intelligent electromagnetic flowmeter from Shanghai Yino is used in the project. During construction, the workers only installed 3 wires; now the signal needs to be sent to the control room. How should it be connected? Can a shielded cable be used to replace one of the wires? Please, experts, help me come up with some ideas!
This post was last edited by jinyue on 2011-5-24 11:26. No, the shielding wire is crucial for signal transmission. If the signal is transmitted using 4–20mA, consult the manufacturer to determine whether the negative terminal of the signal wire can share the same wire as the negative terminal of the 24V power supply. 2. Can the signal line be connected in series to 24V? If it works, then the problem is solved. If that doesn’t work, use another pull cord.
The KROHNE electromagnets we use are four-wire, requiring separate power and signal wires. It’s better not to settle for something subpar! Check if there are any junction boxes in the vicinity; perhaps there are spare cables leading to the DCS control room.
Some flow meters require a 220V power supply and operate on a four-wire system; three wires are likely not sufficient. Even with a 24V power supply, it cannot be supplied to the signal lines!
Check if there are any other 24MV power supplies in the vicinity
This won’t work; we have to pull again
I’ve never seen a three-wire electromagnetic flowmeter; I’m not well-informed on this topic.