Advantages and disadvantages of electromagnetic flow meter

Abstract: The advantages and disadvantages of electromagnetic flowmeters are provided by excellent flowmeter and flowmeter manufacturers. The main advantages of the electromagnetic flowmeter are as follows: (1) The sensor structure of the electromagnetic flowmeter is simple, and there are no moving parts in the measuring tube, nor any throttling parts that hinder the flow of the fluid. So there is no additional pressure loss when the fluid passes through the flowmeter. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the details of the advantages and disadvantages of electromagnetic flowmeters. The main advantages of the electromagnetic flowmeter are as follows: (1) The sensor structure of the electromagnetic flowmeter is simple, and there are no moving parts in the measuring tube, nor any throttling parts that hinder the flow of the fluid. Therefore, when the fluid passes through the flow meter, it will not cause any additional pressure loss, and it is one of the flow meters with the lowest operating energy consumption among the flow meters. (2) It can measure the flow rate of dirty medium, corrosive medium and suspended liquid-solid two-phase flow. This is because there are no obstructed flow parts inside the measuring tube of the instrument, and only the lining of the measuring tube and the electrode are in contact with the measured fluid, and the material can be selected according to the properties of the measured fluid. For example, using polytrifluoroethylene or polytetrafluoroethylene as the inner lining can measure various corrosive media such as acids, alkalis, and salts; using wear-resistant rubber as the inner lining is especially suitable for measuring wear and tear with solid particles. Larger ore pulp, cement slurry and other liquid-solid two-phase flows, as well as various fibrous liquids and pulp and other suspended liquids. (3) Electromagnetic flowmeter is a volume flow measuring instrument. During the measurement process, it is not affected by the temperature, viscosity, density and conductivity of the measured medium (within a certain range). Therefore, the electromagnetic flowmeter can be used to measure the flow of other conductive liquids only after being calibrated by water. (4) The output of the electromagnetic flowmeter is only proportional to the average flow velocity of the measured medium, and has nothing to do with the flow state (laminar flow or turbulent flow) under symmetrical distribution. Therefore, the range of the electromagnetic flowmeter is extremely wide, and its measurement range can reach 100:1, and some even reach the operational flow range of 1000:1. (5) The electromagnetic flowmeter has no mechanical inertia and has a sensitive response. It can measure the instantaneous pulsating flow, and can also measure the flow in both positive and negative directions. (6) The caliber range of industrial electromagnetic flowmeters is extremely wide, from a few millimeters to several meters, and there are real-flow calibration equipment with a diameter of 3m in China, which lays the foundation for the application and development of electromagnetic flowmeters. The main shortcomings of electromagnetic flowmeters are as follows: (1) They cannot be used to measure gas, steam and liquids containing a large amount of gas. (2) It cannot be used to measure liquid media with very low conductivity, such as petroleum products or organic solvents, etc. At present, electromagnetic flowmeters are powerless. (3) Ordinary industrial electromagnetic flowmeter cannot be used to measure high temperature medium due to the limitation of measuring tube lining material and electrical insulating material; if it is not specially treated, it cannot be used to measure low temperature medium, in order to prevent the measurement tube from forming Dew (frost) damages the insulation. (4) Electromagnetic flowmeters are susceptible to external electromagnetic interference. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Advantages and Disadvantages of Electromagnetic Flow Meters'

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