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1) The sensor of the electromagnetic flowmeter has a simple structure; there are no moving parts inside the measurement tube, nor any throttling elements that could impede fluid flow. Therefore, when fluid passes through the flow meter, it does not cause any additional pressure loss, making it one of the flow meters with the lowest operating energy consumption. 2) It can measure the flow rate of contaminated media, corrosive media, and suspension-type liquid-solid two-phase flows. This is because there are no components that impede flow inside the measuring tube of the instrument; only the lining of the measuring tube and the electrodes come into contact with the fluid being measured, and their materials can be selected based on the properties of that fluid. For example, using polytrifluoroethylene or polytetrafluoroethylene as the lining allows for the measurement of various corrosive substances such as acids, bases, and salts; whereas a lining made of wear-resistant rubber is particularly suitable for measuring slurry and cement slurry – which are liquid-solid mixtures containing solid particles and are subject to significant wear – as well as various suspended liquids containing fibers and pulp. 3) The electromagnetic flowmeter is a type of instrument for measuring volumetric flow rate; during measurement, it is not affected by the temperature, viscosity, density, or conductivity (within a certain range) of the medium being measured. Therefore, after being calibrated with water, an electromagnetic flowmeter can be used to measure the flow rate of other conductive liquids. 4) The output of the electromagnetic flowmeter is proportional only to the average flow velocity of the medium being measured, and is independent of the flow regime under symmetric conditions (laminar or turbulent). Therefore, electromagnetic flowmeters have an extremely wide measurement range; their ratio can reach 100:1, and in some cases even 1000:1 for the operational flow range. 5) Electromagnetic flowmeters have no mechanical inertia and are highly responsive; they can measure instantaneous pulsating flow rates, as well as flow in both forward and reverse directions. 6) Industrial electromagnetic flowmeters come in a very wide range of diameters, from a few millimeters to several meters. In China, there are already flow calibration devices with a diameter of 3 meters, which lays the foundation for the application and development of electromagnetic flowmeters.