Application of electromagnetic flow meter in petrochemical industry

Abstract: The application information of electromagnetic flowmeters in the petrochemical industry is provided by excellent flowmeter and flowmeter manufacturers. Abstract: This paper introduces the working principle of electromagnetic flowmeter and its application in petrochemical industry. With the rapid development of computer technology, the petrochemical instrument automatic control system is gradually developing towards digitization, networking, modeling and intelligence. petrochemical enterprises. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following are the details of the application of electromagnetic flowmeters in the petrochemical industry. This paper introduces the working principle of electromagnetic flowmeter and its application in the petrochemical industry. With the rapid development of computer technology, the petrochemical instrument automatic control system is gradually developing towards digitization, networking, modeling and intelligence. On the basis of developing existing information systems, petrochemical enterprises continue to deepen the comprehensive automation system of enterprises, strengthen the application of safety control systems, and improve the level of basic automation and advanced control of enterprises, so as to enhance the market competitiveness of enterprises. Application of new automatic detection and analyzer: The development of domestic and foreign instrument systems to digitization, intelligence, networking and miniaturization has enabled petrochemical enterprises to improve the application level of automatic detection instruments. In order to meet the requirements of the field bus control system, the field bus transmitter has been developed rapidly. This transmitter is all-digital, with simple structure, higher resolution and stability than general intelligent transmitters. As the fieldbus digital instrument products are becoming more and more perfect, and have the characteristics of high reliability and interoperability (that is, the integrated configuration of products of different brands), they will be more applied in the field of petrochemical process control. The development of domestic and foreign commercial trade requires improving the measurement accuracy of commodity delivery. The accuracy of mass flow meters for petrochemical factory measurement applications is±0.1% or higher. In order to strengthen product quality management, petrochemical enterprises have also promoted the application of online analytical instruments. It will directly affect the product quality of petrochemical enterprises and the level of advanced control applications, so it has been actively promoted by petrochemical systems, mainly including online oil quality analyzers, online gas or liquid chromatography and other physical property analyzers. The latest online multi-channel near-infrared (NIR) spectrometer has been applied to the refining and blending system of petrochemical enterprises and achieved good results. The new generation of laboratory low-cost gasoline quality indicators rapid tester has been successfully used in Sinopec Hangzhou Refinery and other units, and has been well received by users. Soft measurement technology has also developed rapidly, mainly used to solve some analysis and detection problems of petrochemical enterprises. Due to the increasing requirements for environmental protection, the application of environmental protection instruments has also increased, such as online flue gas analysis, comprehensive water quality analyzer, online COD analyzer, DO analyzer and PH analyzer. At present, the demand for online analytical instruments in petrochemical enterprises is very large, and there is a certain gap between domestic online analytical instruments and foreign products. Most of the online analytical instruments used now are imported products. Petrochemicals are paying more and more attention to plant maintenance and are especially interested in predictive maintenance issues. Some companies require on-line and real-time sensing systems for monitoring and evaluating heat exchanger and furnace efficiency, vibration and corrosion“healthy”status indicator. Using instruments and systems with diagnostic and predictive maintenance capabilities can increase the production potential of existing equipment by 1% to 3%, while unplanned maintenance costs can be reduced by 10% to 30%. The electromagnetic flowmeter can also output 4-20mA current signal for recording, adjustment and control while satisfying on-site display. It has been widely used in chemical industry, environmental protection, metallurgy, medicine, papermaking, water supply and drainage and other industrial technology and management departments . An electromagnetic flowmeter that uses the principle of electromagnetic induction to measure the flow rate of medium fluids. It adds a magnetic field on both sides of the pipeline, and the measured medium flows through the pipeline to cut the magnetic field lines, and an induced potential is generated on the two detection electrodes, the magnitude of which is proportional to the moving speed of the fluid. The electromagnetic flowmeter is characterized by no moving parts and parts protruding from the fluid, with high reliability, and can be used to measure acid, alkali, salt solution, coal slurry, mineral slurry, mortar plaster, paper pulp, resin, Flow of various suspended solids, vapors and viscous substances such as rubber latex, synthetic fiber pulp and photosensitive latex. The electromagnetic flowmeter has good sealing performance and can also be used in tap water and underground waterway systems. And the measurement process is not in contact with the fluid, which is suitable for the pharmaceutical, biochemical and food industries. This flowmeter can also detect blood flow. Its turndown ratio is about 100:1, the accuracy is generally 1%, and the high-precision electromagnetic flowmeter can reach 0.1% (mean square error). Since this sensor must maintain a proportional relationship between the resistance in the pipe and the impedance of the measurement circuit, it is difficult to manufacture.

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