Advantages of electromagnetic flow meters in wastewater treatment

　　Among the many flowmeter products used for sewage measurement, electromagnetic flowmeters are dominant, both in terms of principle and measurement accuracy. The working principle of electromagnetic flowmeters is based on Faraday's law of electromagnetic induction. The premise of using electromagnetic flowmeters is that the measured liquid must be conductive. If the conductivity is lower than the threshold, measurement errors will occur until it cannot be used. If it exceeds the threshold, it can be measured even if it changes, and the indication error does not change much.

　　Usually sewage has high conductivity because it contains many ions, which is one of the advantages of electromagnetic flowmeters for measuring sewage, which is determined by its measurement principle. In addition, some characteristics of electromagnetic flowmeters also determine that they are more suitable for sewage measurement than other flowmeter products.

　　Electromagnetic flowmeters are not affected by external factors such as temperature, pressure, viscosity, etc. There is no pressure loss caused by contraction or protrusion inside the measuring tube. In addition, the initial signal detected by the flow element is a voltage that changes precisely linearly with the average flow velocity of the fluid. It has nothing to do with other properties of the fluid and has great advantages. Based on the characteristics of sewage, such as large flow changes, impurities, low corrosiveness, and certain electrical conductivity, electromagnetic flowmeters are the best choice for measuring the flow of sewage.

　　In summary, electromagnetic flowmeters do not require maintenance when measuring sewage. Compared with other types of flowmeters, their accuracy can remain unchanged after many years and their service life is longer.