By the law of electromagnetic induction we can see. When the conductor moves in the magnetic field and cuts the magnetic field lines. same. In the magnetic field to do the magnetic flux movement of the conductive liquid. When a certain condition is satisfied, the induced potential is proportional to the average flow rate of the conductive liquid in the pipeline. When the diameter of the pipe is constant and the magnetic flux density is constant, there is a linear relationship between the induced potential and the volume flow or the average flow rate of the liquid to be measured. If you insert an electrode on each side of the liquid pipe. Can lead to induced potential. Measure the size of this induced potential, you can get the flow.
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