Electromagnetic flowmeter how to encounter magnetic interference prevention and solution

In real life there are magnetic field, motors, pumps, frequency converter is everywhere, such as including electromagnetic flowmeter it is through the magnetic field lines to measure an instrument of conductive liquid. Since the magnetic field is objective existence that we should be positive initiative. Due to the existence of the magnetic field, it is for our instruments and meters, there are still some hazards when two magnetic fields exist, this kind of jamming signal superposition to the measuring signal, affect the operation of the system. All kinds of excitation ways will bring different electromagnetic interference problems. Dc excitation method is easy to produce polarization interference, ac excitation method is easy to generate orthogonal interference ( 90 degrees interference) , in-phase interference ( The power frequency interference) And so on. Side with magnetic field, magnetic field that how to encounter interference, first made split type flowmeter, cannot do fission with ordinary insulated wire line, and should take preventing magnetic interference shielding wire, it can better meet the interference magnetic field on the meter, at the same time, in order to avoid the interference signal, between the meter and the converter signal must use shielding wire transfer. Learn to meet preventing magnetic interference at the same time, we should also learn to disposal problems at the scene, but also learn a variety of solutions, if it is a new plant at the time of commissioning the installation should avoid collision, two kinds of magnetic field which means their relative distance to the far point, this relatively weak magnetic field,

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