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Magnetic flowmeters that cause non-axisymmetrical flow rates in the tubes can cause errors. Therefore, in the optional electromagnetic flowmeter, it is necessary to ensure the straight pipe section as much as possible to reduce the error caused by it.
Electromagnetic Flowmeter
In the process of use, the flow rate of the fluid in the pipe is symmetrically distributed in the pipe, and in a uniform magnetic field, the magnitude of the electromotive force generated on the flowmeter electrode is independent of the flow velocity distribution of the fluid and is proportional to the average flow velocity of the fluid instead of the average flow velocity of the fluid. Axisymmetric flow velocity distribution, that is, the difference in the geometric position of each fluid particle relative to the electrode, the magnitude of the induced electromotive force generated by the counter electrode is also different. The closer to the electrode, the greater the induced electromotive force generated by the high-speed particle, therefore, must Ensure that the fluid flow rate is axisymmetric.