Electromagnetic flowmeter interference, daily life everywhere there are magnetic fields, motors, pumps, frequency converters and other ubiquitous, including electromagnetic flowmeter it is based on the magnetic field caused by magnetic field to accurately measure the conductive liquid instrument equipment.That is to say the magnetic field is the essence of things that people should be positive positive solution.

Because of the existence of magnetic field, it still has certain harm to people's instruments. When two magnetic fields exist at the same time, this kind of interference signal accumulates into the measurement data signal and endangers the operation of the system.Different excitation methods can produce different electromagnetic interference problems.Dc excitation method is easy to cause polarization interference, and ac excitation method is easy to cause orthogonal interference (90 degree interference), in-phase interference (that is, dc interference) and so on.

Side since a magnetic field, magnetic field that how to meet the interference, the flowmeter is made separate, can't do with general insulated wire separation line, and should take preventing magnetic interference shielded cable, it can better meet the interference magnetic field on the flowmeter, in addition, in order to prevent jamming signal, flowmeter and converter power transmission signals must be used in the middle of the screen.

Learn to encounter prevent magnetic field to interfere well additional, people still should want to learn to deal with difficult problem on the spot, learn all sorts of solution method well even, if be a new plant when adjusting installation should prevent two kinds of magnetic field to bump into, the distance that means them relativity wants to go far a bit, so magnetic field relativity wants some weaker.

Porcelain city Shanghai instruments co., LTD., has more than 30 years of technology accumulation, has a number of national invention, has been reached in many ways even more than the world leading level, such as range than can do 1 0 and the latter, temperature more than 200 c, can bear pressure 1000 bar and so on, can say we are the real benchmarking enterprise of flow meter industry in China.