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The working principle of an electromagnetic flowmeter is based on Faraday’s law of electromagnetic induction. In an electromagnetic flowmeter, the conductive medium inside the measuring tube functions as the conductive metal rod in Faraday’s experiment, with two electromagnetic coils at the upper and lower ends generating a constant magnetic field. An induced voltage is generated when a conductive medium flows through it. The two electrodes inside the pipe measure the induced voltage generated. The measuring pipeline achieves electromagnetic isolation from the fluid and the measuring electrodes through a non-conductive lining (rubber, Teflon, etc.). The functions of electromagnetic flowmeters available on the market vary greatly; the simpler ones are designed to measure only unidirectional flow, outputting only analog signals to drive subsequent instruments ； The multi-functional meter features the ability to measure two-way flow, range switching, upper and lower flow limit alarms, empty pipe and power outage alarms, small signal rejection, flow display and total volume calculation, automatic verification and fault self-diagnosis, communication with a host computer, and motion configuration. Some models of electromagnetic flowmeters offer a serial digital communication function with various communication interfaces and dedicated chips (ASICs) to connect to HART protocol systems, PROFINET, Modbus, FF fieldbuses, and others. Electromagnetic flowmeters possess a range of excellent features that enable them to address issues that are difficult for other types of flowmeters to handle, such as the measurement of dirty or corrosive fluids. In the 1970s and 1980s, significant technological advances were made in electromagnetic flowmeters, leading to their wide-ranging application. Advantages of electromagnetic flowmeters: 1: The measurement channel is a smooth, straight tube that does not get clogged, making it suitable for measuring liquid-solid two-phase fluids containing solid particles, such as pulp, sludge, and sewage. 2: It does not cause pressure losses resulting from flow measurement, thus offering good energy-saving effects. 3: The measured volumetric flow rate is essentially unaffected by changes in fluid density, viscosity, temperature, pressure, or conductivity. 4: It has a wide range of flow rates and a broad range of pipe diameters. 5: It can be used with corrosive fluids. Disadvantages of electromagnetic flowmeters: 1: They cannot measure liquids with very low conductivity, such as petroleum products. 2: They cannot measure gases, steam, or liquids containing large bubbles. 3: They cannot be used at high temperatures. Electromagnetic flowmeters have a wide range of applications. Large-diameter models are commonly used in water supply and drainage projects. They are often employed in situations that require high precision or present measurement challenges, such as in the control of cooling water for blast furnaces in the steel industry, for measuring pulp and black liquor in the paper industry, in highly corrosive fluids in the chemical industry, and in mineral slurries in the non-ferrous metallurgy industry. They are also widely used in industries with strict hygiene requirements, such as the pharmaceutical industry, food industry, and biochemistry sector. For more information, please visit the company’s official website at http://www.yb1518.com/. Please keep this link when reproducing the content! http://www.yb1518.com/UploadFiles/2012717174126829.jpg