Yunyi Electronic Water Flowmeter Magnetic Flow Sensor Water Flow Sensor

Electromagnetic flowmeter is an instrument that measures the volume flow of conductive liquids based on Faraday's law of electromagnetic induction. Its main structure includes measuring tube, electrode, excitation system, signal converter, etc. There are no parts that hinder the flow of fluid in the measuring tube, and there is almost no pressure loss; a pair of electrodes are installed on the inner wall of the measuring tube, in contact with the fluid, for detecting the induced potential; the excitation system generates a uniform magnetic field; the signal converter amplifies, converts and processes the weak electrical signals detected by the electrodes, and finally outputs a standard signal proportional to the flow rate. ​
When the conductive liquid flows in the measuring tube, it is equivalent to a conductor cutting the magnetic lines of force. According to Faraday's law of electromagnetic induction, an induced electromotive force will be generated in the direction perpendicular to the flow direction, and the magnitude of the electromotive force is proportional to the flow rate of the fluid, the magnetic field strength and the inner diameter of the measuring tube. By measuring the magnitude of the induced electromotive force, the flow rate of the fluid can be obtained through calculation.

Product features of electromagnetic flowmeters

1. High measurement accuracy: It is not affected by changes in fluid density, viscosity, temperature, pressure and conductivity, and can accurately measure fluid flow. The measurement accuracy can usually reach ±0.5%, and some high-precision models can even reach ±0.2%, providing reliable guarantee for accurate measurement in industrial production.

2. No obstruction components: There are no components in the measuring tube that hinder the flow of fluid, and no additional pressure loss will be generated, which reduces the energy consumption during fluid transportation. It is especially suitable for measuring large-diameter and low-flow fluids, such as urban water supply and drainage systems.

3. Wide range: The measurable flow range is large, and the range ratio is usually 10:1 - 20:1, which can meet the needs of flow measurement under different working conditions. From small flow to large flow, it can stably measure, and can adapt to large changes in flow without changing the instrument.