Electromagnetic flowmeter manufacturers

Abstract: The information of electromagnetic flowmeter manufacturers is provided to you by excellent flowmeter and flowmeter production and quotation manufacturers. High-quality electromagnetic flowmeter manufacturers usually have excellent electromagnetic flowmeter production technical teams and rich experience in electromagnetic flowmeter project installation and design. Electromagnetic flowmeter manufacturers provide you with high-quality flowmeter quotation, selection, installation design and other services. . More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the details of the articles of electromagnetic flowmeter manufacturers. High-quality electromagnetic flowmeter manufacturers usually have excellent electromagnetic flowmeter production technical teams and rich experience in electromagnetic flowmeter project installation and design. Electromagnetic flowmeter manufacturers provide you with high-quality flowmeter quotation, selection, installation design and other services. Product classification of electromagnetic flowmeter manufacturers This type of products provided by electromagnetic flowmeter manufacturers are generally divided into one-piece and split-type electromagnetic flowmeters. If it is installed on the pipeline, there are usually three types of installation: plug-in, flange and clamp. The structure of electromagnetic flowmeter is mainly composed of magnetic circuit system, measuring conduit, electrode, shell, lining and converter. Magnetic circuit system: Its function is to generate a uniform DC or AC magnetic field. The DC magnetic circuit is realized by permanent magnets. Its advantages are relatively simple structure and little interference from AC magnetic fields. However, it is easy to polarize the electrolyte liquid passing through the measuring conduit so that the positive electrode is surrounded by negative ions and the negative electrode is surrounded by positive ions. The shell is the polarization phenomenon of the electrodes, and it causes the internal resistance between the two electrodes to increase, which seriously affects the normal operation of the meter. When the diameter of the pipe is larger, the permanent magnet becomes correspondingly larger, bulky and uneconomical, so the electromagnetic flowmeter usually uses an alternating magnetic field and is excited by a 50HZ power frequency power supply. Measuring catheter: Its function is to allow the conductive liquid to be measured to pass through. In order to shunt or short-circuit the magnetic flux when the magnetic field lines pass through the measuring tube, the measuring tube must be made of non-magnetic, low electrical conductivity, low thermal conductivity and mechanical strength materials. Non-magnetic stainless steel, fiberglass, high-strength plastic, aluminum, etc. can be selected. Electrode: Its function is to draw an induced potential signal proportional to the measured voltage. The electrodes are usually made of non-magnetic stainless steel and are required to be flush with the lining to prevent fluid passage. It should be installed in the vertical direction of the pipeline to prevent deposits from accumulating on the pipeline and affecting the measurement accuracy. Shell: It is made of ferromagnetic material, it is the shell of the excitation coil of the power distribution system, and isolates the interference of the external magnetic field. Lining: Complete electrically insulating lining on the inside of the measuring tube and on the flange sealing surfaces. It directly contacts the liquid to be measured, and its function is to increase the corrosion resistance of the measuring tube and prevent the induced potential from being short-circuited by the metal measuring tube wall. Lining materials are mainly corrosion-resistant, high-temperature and wear-resistant PTFE plastics, ceramics, etc. Transducer: The induced potential signal generated by the liquid flow is very weak and is greatly affected by various disturbance factors. The function of the converter is to amplify and convert the induced potential signal into a unified standard signal, and suppress the main interference signal. Its task is to amplify the induced potential signal Ex detected by the electrodes and convert it into a unified standard DC signal. Electromagnetic flowmeter manufacturers product scope of application Electromagnetic flowmeters are widely used in sewage, fluorine chemical, industrial water, tap water industry, medicine, steel and many other aspects. Because the principle determines that it can only measure and guide electrodynamic fluids. Although it is much better than other types of flow meters in terms of reliability and stability, there are still some problems in actual use by customers. Now, I will discuss the selection and installation of electromagnetic flowmeter in detail:br>Like other flowmeters, although the electromagnetic flowmeter has a 30:1 turndown ratio, which is higher than that of vortex flowmeters and differential pressure flowmeters, it is also limited. When setting up a water meter, many customers often compare it to a water meter, thinking it can measure very low flow rates. Under normal conditions, it can only measure 0.1m/s. If the flow rate is lower than the electromagnetic flowmeter, it is difficult to measure correctly. Therefore, it is necessary to clarify the flow range ratio at the beginning of the order. When ordering, it is not possible to order based on the original pipe diameter. It is best to set the meter diameter according to your actual flow. Like other flowmeters, electromagnetic flowmeters also have requirements for straight pipes before and after installation, but they are lower than other types of flowmeters, but the most critical point is to meet: full pipe, full pipe again. When the pipe is not full, it's easy to make the flowmeter jump randomly: like other flowmeters, electromagnetic flowmeters also have protection ratings. Generally, if the customer has requirements for the installation environment of the instrument, and the installation location is in an underground well or other location, the protection level of the integrated type is IP65, and the protection level of the split type is IP68 (for sensors).

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