The advantages and application fields of electromagnetic flowmeter
2023-11-01
Electromagnetic flowmeter is favored in industrial applications, can measure a variety of acid, alkali, salt and other corrosive liquids, as well as flammable, explosive media, but also suitable for all kinds of industrial wastewater, pulp, sludge and other measurements. It is a volume flow measuring instrument that is not affected by temperature, viscosity, density and conductivity when measuring, so it can be used to measure other conductive liquids without additional corrections after only water calibration. In addition, the transmitter structure of the electromagnetic flowmeter is simple, there are no moving parts and throttling parts that hinder the flow of fluid, so there is no additional pressure loss and cause wear, blockage and other problems. It is especially suitable for measuring liquid-solid two-phase fluids such as pulp and sewage with solid particles, as well as a variety of viscous grout. At the same time, due to the absence of mechanical inertia and good linear response speed, instantaneous flow fluctuations can be measured and converted to standard output for field display or remote transmission. In addition, the electromagnetic flowmeter has a wide measuring range, a range ratio of 1:100, and only depends on the average flow velocity of the liquid being measured rather than the flow field distribution. However, electromagnetic flowmeters also have some limitations. For example, it cannot be used to measure gases, vapors and fluids with large gas content; For the liquid medium with very low conductivity, it cannot be used at present; Can not achieve the measurement of high temperature and high pressure liquid; A certain length of straight pipe section is needed to maintain the axisymmetric flow field distribution. Sensitive to external electromagnetic interference.
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