Yuanneng Instrument will detail the function and structure of the electromagnetic flow meter for you

Abstract: Yuanneng Instrument will provide you with detailed information on the role and structure of electromagnetic flowmeter meters, which are provided by excellent flowmeter and flowmeter manufacturers and quotation manufacturers. As a senior manufacturer of electromagnetic flowmeters in China, Yuanneng Instruments will break down the structure, composition and functions of intelligent electromagnetic flowmeters in detail. . For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. As a senior manufacturer of electromagnetic flowmeters in China, we will break down the structure, composition and function of intelligent electromagnetic flowmeters in detail. Intelligent electromagnetic flowmeters are mainly composed of magnetic circuit system, measuring conduit, electrodes, lining, casing and converter. 1. The magnetic circuit system is used to generate a uniform DC or AC magnetic field. The DC magnetic field can be realized by using a magnet, and its structure is relatively simple. However, the DC potential generated on the electrode will cause the electrolysis of the liquid to be measured, so the polarization phenomenon occurs on the electrode, which destroys the original measurement conditions; when the diameter of the pipe is large, the magnet is also required to be large, so that both Bulky and uneconomical. Therefore, most of the electromagnetic flowmeters used in industrial production use alternating magnetic fields, and are generated by excitation by 50Hz power frequency power supply. The structure of the excitation coil that generates the alternating magnetic field varies with the diameter of the conduit, and it is a concentrated winding structure. It consists of two saddle-shaped excitation groups connected in series or in parallel, one at the top and the other on the measuring tube. In order to form a magnetic circuit, reduce interference and ensure a uniform magnetic field, there is a yoke formed by stacking dry-layer silicon steel sheets around the coil. 2. The function of the measuring catheter is to allow the liquid to be measured to pass through. It is provided with flanges at both ends for connection with pipes. In order to prevent the magnetic flux from being shunted and reduce eddy currents when the magnetic lines of force pass through the measuring conduit, the measuring conduit must be made of materials with non-magnetic conductivity, low electrical conductivity, low thermal conductivity and certain mechanical strength, generally stainless steel, glass fiber reinforced plastic, aluminum and other high-strength plastics. 3. The function of the electrode is to draw out the induced potential generated when the measured medium cuts the magnetic field lines. In order not to affect the magnetic flux distribution and avoid the interference introduced by the electrodes, the electrodes are generally made of non-magnetic stainless steel. The electrodes are required to be flush with the liner so that the fluid can pass unobstructed. The installation position of the electrode should be in the horizontal direction of the pipeline to prevent sediment from accumulating on the electrode and affecting the measurement. 04. Lining There is a complete electrical insulating lining on the inner side of the measuring conduit and the sealing surface of the flange. It directly contacts the measured medium, and its main function is to increase the wear resistance and corrosion resistance of the measuring conduit and prevent the induced potential from being short-circuited by the wall of the metal measuring conduit. Therefore, the lining must be an insulating material that is resistant to corrosion, abrasion and higher temperatures. 5. The shell is generally made of ferromagnetic material, which is the outer cover to protect the excitation coil and can isolate the interference of the external magnetic field. 6. The induced potential generated by the fluid flow of the converter is very weak, and the 50Hz AC power supply is used for power supply, so the influence of various interference factors is great. The purpose of the converter is to amplify the induced potential and suppress the three important interference signals. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Yuanneng Instrument will give you a detailed description of the role and structure of the electromagnetic flow meter'

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