Electromagnetic Flowmeter Structure Detailed Explanation Graphic Version

Abstract: The detailed explanation of the structure of electromagnetic flowmeter is provided by the excellent manufacturers of flowmeters and flowmeters. The main components of the structure: In addition to the power supply, the conventional electromagnetic flowmeter structure usually includes two parts: the sensor and the converter. The sensor converts the flow through the medium into an induced potential, and then the induced potential is converted into a signal (4-20MA) by the converter. For more flowmeter manufacturers to select models and price quotations, you are welcome to inquire. The following is the detailed explanation of the structure of electromagnetic flowmeters. The main structure of the structure: In addition to the power supply, the conventional electromagnetic flowmeter structure usually includes two parts: the sensor and the converter. The sensor converts the flow through the medium into an induced potential, and then the induced potential is converted into a signal (4-20MA) by the converter for output display or control. So what are the detailed structural components of the electromagnetic flowmeter? Let's look down: ① Shell: ferromagnetic material, coil cover, to isolate the interference of the external environment and ensure the normal working state of the magnetic field of the electromagnetic flowmeter; ② Conduit: the basic structure part, the pipe that ensures the circulation of the medium (with conductivity) The body must be non-magnetic materials such as stainless steel, glass fiber reinforced plastic, carbon steel, etc.; ③ Electrode: Its function is to extract the induced potential signal proportional to the measurement. The electrode is usually made of non-magnetic material and is required to be flush with the lining to avoid Fluid flow is blocked. It should be installed in the vertical direction of the pipeline to prevent deposits from accumulating on the pipeline and affecting the measurement accuracy. ④ Magnetic circuit system: its function is to generate a uniform DC or AC magnetic field, and the DC magnetic circuit is realized by a permanent magnet. Thereby, the positive electrode is surrounded by the negative electrode, and the negative electrode is surrounded by positive ions. The shell is the polarization phenomenon of the electrodes, which will cause the internal resistance of the two electrodes to increase, which will seriously affect the normal operation of the meter. When the tube diameter is large, the permanent magnets are correspondingly large, bulky and uneconomical. Therefore, the electromagnetic flowmeter usually uses an alternating magnetic field and is excited by a 50HZ power frequency power supply. ⑤Converter: The induced potential signal generated by the liquid flow is very weak, and is greatly affected by various interference factors. The function of the converter is to amplify the induced potential signal and convert it 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. ⑥ Lining: There is a complete electrical insulating lining on the inner side of the measuring tube and on the flange sealing surface. It is in direct contact with the liquid to be measured, and its function is to increase the corrosion resistance of the measuring conduit and prevent the induced potential from being short-circuited by the wall of the metallic measuring conduit. The lining materials are mainly corrosion-resistant, high-temperature-resistant, wear-resistant PTFE plastics, ceramics, etc. After introducing the detailed structure of electromagnetic flowmeter, you can continue to understand the principle of electromagnetic flowmeter: please click 'Principle of electromagnetic flowmeter' for the portal. Do you have a deeper understanding of the structure and working method of electromagnetic flowmeter? ? The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Detailed explanation of electromagnetic flowmeter structure with graphic version'
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