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The electromagnetic flowmeter works based on Faraday's law of electromagnetic induction

The electromagnetic flowmeter works based on Faraday's law of electromagnetic induction

The electromagnetic flowmeter is based on Faraday's law of electromagnetic induction. It consists of a sensor and a converter. The sensor is mainly composed of a measuring tube lined with insulating material, a pair of electrodes installed through the wall of the measuring tube, and a Composed of coils and iron cores. When the conductive medium flows through the sensor measuring tube, there is a stable magnetic field with a magnetic induction intensity generated by the transmitter in an interval perpendicular to the medium flow direction. When the conductive fluid with an average flow rate flows through the magnetic field region, it cuts the magnetic field lines. motion. 已确定并维持磁感应强度日不变时,是一个常数。 So on the two detection electrodes that are parallel to the cross section of the pipeline and perpendicular to the direction of the magnetic field lines, an induced potential is generated. According to the law of electromagnetic induction, the meter constant is obtained. When the diameter D of the pipeline has been determined and the magnetic induction intensity has remained constant, Is a constant. ,也就测出了介质的体积流量q 。 At this time, the induced potential has a linear relationship with the volume flow, that is, when the induced potential E is measured, the volume flow q of the medium is also measured.

  There are no throttling and moving parts in the measuring tube, so the pressure loss is small, saving energy, and being able to measure the flow of fluids containing particles, suspended solids and so on. ② As long as the lining and the electrode are in contact with the medium, only the materials of both are selected, and the purpose of anticorrosion can be achieved; as long as the electrode is not polluted, the accuracy of the meter will not be reduced for a long time. ③ There is a linear relationship between the output current and the flow rate of the electromagnetic flowmeter. And it is not affected by the physical properties of the liquid; therefore, after calibration with water, it can be used to measure the flow of other conductive liquids or solid-liquid two-phase media without correction. 转换器采用新颖励磁方式,功耗低、零点稳定、精度高,流量范围可达1001 ,参数设定便当,编程牢靠,具有自检和自诊断功能。 ④ SMART converter adopts novel excitation method, low power consumption, stable zero point, high accuracy, flow range up to 100 : 1 , convenient parameter setting, reliable programming, and self-test and self-diagnosis functions. ⑤ No mechanical inertia, flexible response, can measure pulsating flow.

  According to the characteristics of the measured medium and the advantages of the electromagnetic flowmeter, it can be seen that the electromagnetic flowmeter is very suitable for the measurement of chlor-alkali. Although the electromagnetic flowmeter is more expensive, it has high accuracy, small maintenance, long service life, and high cost performance. Differential pressure flowmeters, turbine flowmeters, and oval gear flowmeters are all affected by fluid working conditions and parameters such as fluid density and viscosity, which increase measurement errors. Due to the wear of the measuring element due to the wear of the solid particles, the life is reduced, and even the clogging is unusable, and the corrosiveness cannot be solved. Our factory used an elliptical gear flowmeter to measure the diaphragm electrolyte, but it was stopped due to the plugging of salt in the electrolyte, and it was finally replaced with an electromagnetic flowmeter.

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锥流量计、转子流量计、污水流量计电磁流量计,涡轮流量计,涡街流量计,超声波流量计, MF 型气体流量计 Guangzhou Dichuan Instrument Co., Ltd. is mainly engaged in the research and development and production of flow meters. The main products are electromagnetic flowmeters, vortex flowmeters, turbine flowmeters, V- cone flowmeters, rotor flowmeters, sewage flowmeters, electromagnetic flowmeters, and turbine flowmeters. Meter, vortex flowmeter, ultrasonic flowmeter, MF gas flowmeter   系列微小型体流量计,气体质量流量计,污水流量计,齿轮流量计,环保分析仪器COD 氨氮仪器 , FS Series Miniature Body Flowmeter, Gas Mass Flowmeter, Sewage Flowmeter, Gear Flowmeter, Environmental Analysis Instrument COD Ammonia Nitrogen Instrument   计,电导率,电阻率,余氯 Dissolved oxygen instrument, pH meter, conductivity, resistivity, residual chlorine   Dichuan instruments, such as the secondary water supply analysis system, have won extensive market support with domestic leading technology level and perfect after-sales service. We sincerely invite customers to come to discuss cooperation and are willing to work with you to win the future together.

 

 

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