Two-wire electromagnetic flowmeter
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In a recent ion-exchange membrane caustic soda project, Yokogawa two-wire electromagnetic flowmeters were used for measuring flow rates; the flowmeter readings around the electrolytic cell were highly variable, while those in other areas worked normally. The likely cause is the strong magnetic field present around the electrolytic cell. I would like to ask those who have used such flowmeters in areas near electrolytic cells if there are any good solutions
Can it be confirmed that there is no air in the pipeline or that it is full?
According to the principle of electromagnetic flowmeters, the medium must have a certain ion concentration, and neither the medium nor the pipes should be in an electromagnetic environment. There is also the installation location, and whether the instrument allows backflow, etc.
Let’s talk about some issues related to electromagnetic flowmeters: one is interference, and the other is the operating conditions at the site. An electromagnetic flowmeter is a rather tricky device; if not handled properly, it can easily suffer from interference.
This should be a disadvantage of two-wire electromagnets