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1. What brand of flowmeter is EMFM? EMFM is an electromagnetic flowmeter brand under Guangzhou Dechuan Instrument Co., Ltd., with its origin in Guangzhou, Guangdong. 1. The product principle is based on Faradays law of electromagnetic induction, measuring the volume flow rate of the conductive medium inside the tube, using embedded microcontroller technology to achieve digital excitation, and also using CAN fieldbus. 2. The product types include intelligent anti-corrosion type, integrated split pipeline type, etc. 3. The product features reliable performance: simple structure, no movable parts, long working life; No flow blocking components, no pressure loss or fluid blockage. Measurement accuracy: The measurement accuracy is not affected by the type of measured medium and its physical parameters such as temperature, viscosity, density, pressure, etc; The measurement range is large, usually between 20:1-50:1, with a wide range of optional flow guessing quantities; The caliber range is wider than other types of flow meters, ranging from a few millimeters to 3 meters. Versatile functions: In addition to on-site display, it can also output 4-20mA current signals for recording, adjusting, and controlling; Equipped with conductivity measurement function, it can distinguish whether the sensor is empty, and also has self checking and self diagnostic functions; There is RS485 or RS232 digital communication signal output. Widely used: It can measure the flow rate of general conductive liquids, as well as the volume flow rate of liquid-solid two-phase flow, high viscosity liquid flow, salt, strong acid, strong alkali liquids. It is widely used in chemical, environmental protection, metallurgy, medicine, papermaking, water supp
2. What is an electromagnetic flowmeter? The measurement principle of electromagnetic flowmeter is based on Faradays law of electromagnetic induction. The sensor part consists of a coil, electrodes, and an insulating lining. During measurement, the excitation coil in the sensor is energized to generate a magnetic field. When the conductive fluid passes through the magnetic field, a small induced electromotive force is generated due to the cutting force of the magnetic field lines. The electrodes collect these small induced electromotive forces and transmit them to the converter part of the instrument for amplification, correction, and other operations. Then, they are converted into corresponding flow data through formulas, and finally displayed on the instrument or output to the upper computer system. When a conductive fluid flows through a magnetic field perpendicular to the flow direction, the conductive liquid induces an induced voltage E proportional to the average flow velocity. The induced voltage is detected by two electrodes in direct contact with the fluid, amplified, filtered, and shaped by a converter, and then sent to the MCU for display and output control of instantaneous flow rate and cumulative flow rate. E=KBVD formula: E - Induced voltage K - Instrument constant B - Magnetic induction intensi『SILVER Official Website SERVICE』
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