Characteristics and working principle of electromagnetic flow meter

Abstract: The characteristics and working principles of electromagnetic flowmeters are provided by excellent flowmeter and flowmeter manufacturers and quotation manufacturers. Characteristics and working principle of electromagnetic flowmeter 1. Working principle of electromagnetic flowmeter in a magnetic field. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the details of the characteristics and working principles of electromagnetic flowmeters. Characteristics and working principle of electromagnetic flowmeter 1. Working principle of electromagnetic flowmeter In a magnetic field, the speed of motion perpendicular to the direction of the magnetic field is proportional. In the same way, when the conductive fluid flows in the vertical direction in the magnetic field and cuts the magnetic induction line, an induced potential will also be generated on the electrodes on both sides of the pipe. The direction of the induced potential is determined by the right-hand rule, and the magnitude of the induced potential is determined by the following formula: Ex=BDv----------------- Formula (1) where Ex—Induced potential, V; B—Magnetic induction, TD—Pipe inner diameter, mv—The average velocity of the liquid, m/s whereas the volume flow qv is equal to the velocity v of the fluid and the cross-sectional area of ​​the pipe (πD2)/4 product, substitute formula (1) into this formula to get: Qv=(πD/4B)*Ex---------Formula (2) It can be seen from the above formula that when the pipe diameter D is fixed and the magnetic induction intensity B is kept constant, the measured volume flow rate is linearly related to the induced potential. If an electrode is inserted on both sides of the pipe, the induced potential Ex can be introduced, and the volume flow can be obtained by measuring the magnitude of this potential. 2. Performance characteristics of electromagnetic flowmeter The instrument has a simple and reliable structure, no moving parts, and a long working life. There are no shut-off and blocking parts, and there is no pressure loss and fluid blockage. No mechanical inertia, fast response, good stability, can be used in automatic detection, adjustment and program control systems. The measurement accuracy is not affected by the type of the measured medium and its temperature, viscosity, density, pressure and other physical parameters. Different combinations of PTFE or rubber lining and electrode materials such as Hc and 316LTi can meet the needs of different media. Various flowmeter models such as pipeline type and insertion type are available. Using EEPROM memory, the measurement and operation data storage protection is safe and reliable. There are two types of integrated and separate types. High definition LCD backlit display. The integrated electromagnetic flowmeter is formulated according to Faraday's law of electromagnetic induction and is used to measure the volume flow of conductive fluids. Due to its unique characteristics, it has been widely used in the measurement of various conductive liquids in industry. It is mainly used in chemical industry, papermaking, food, textile, metallurgy, environmental protection, water supply and drainage and other industries. It can realize system control with computer. 1. The electromagnetic flowmeter is a volume flow measuring instrument, which is not affected by the temperature, viscosity, density and conductivity (within a certain range) of the measured medium during the measurement process. 2. The electromagnetic flowmeter has no moving parts and no blocking parts, which will not cause pressure loss, and will not cause problems such as wear and blockage. 3. The electromagnetic flowmeter has a wide range, up to 1:100. In addition, the electromagnetic flowmeter is only proportional to the average flow velocity of the measured medium, and has nothing to do with the axisymmetric flow state (laminar flow or turbulent flow). 4. The electromagnetic flowmeter has no mechanical inertia, has a sensitive response, can measure the instantaneous pulsating flow, and has good linearity, so the measurement signal can be directly converted into a standard signal output by a converter. The LD-T type can be indicated on the spot, and the LD type can be transmitted over a long distance. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Characteristics and working principle of electromagnetic flow meter'
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