Electromagnetic flowmeter for water measurement | Working principle and selection of electromagnetic flowmeter

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What are the measurement ranges of electromagnetic flow meters?

1、 Electromagnetic flowmeter is a very sensitive flowmeter that can measure the flow rate of conductive liquids. It is also economical and has a diameter of generally DN10-- DN2000. It can measure sewage or corrosive liquids and has a wide range of applications;

2、 Electromagnetic flow meters can only measure volumetric flow rates, with units such as m3/h (cubic meters/hour), L/min (liters/minute), etc. They have pure grinding instantaneous flow rate display and cumulative flow rate display;

3、 The measurement range corresponding to electromagnetic flow meters of different diameters is: (unit: m3/h): DN10:0.03-4.24; DN15：0.06---9.54； DN20：0.12---16.96； DN25：0.18---26.5； DN32：0.29---43.42； DN40：0.45---67.85； DN50：0.7---106； DN65

1.19---179； DN80

1.8---271； DN100：2.28---424； DN125：4.41---662.。。。。。 For more detailed information, please refer to the technical article on the website of Shandong Qiangsheng Automation Technology Co., Ltd.... Www.qszdh.com

2. Working principle and selection of electromagnetic flowmeter

Working principle and selection of electromagnetic flowmeter Working principle of electromagnetic flowmeter: Electromagnetic flowmeter (EMF) is an instrument made by using Faradays law of electromagnetic induction to measure the volumetric flow rate of conductive liquids. Its working principle is based on the following formula: E=B · V · D · K, where E is the induced potential; B is the magnetic induction intensity; V is the average flow velocity of the conductive liquid; D is the electrode spacing (measuring the inner diameter of the tube); K is a coefficient related to the

Electromagnetic flowmeter for water measurement

magnetic field distribution and axial length. When a conductive liquid flows vertically in a magnetic field and cuts magnetic induction lines, induced potentials are generated on the electrodes on both sides of the pipeline. The magnitude of the induced potential is proportional to the average flow velocity of the liquid, and by measuring the magnitude of this potential, the volumetric flow rate can be obtained. The sensor transmits the induced potential as a flow signal to the converter, and after signal processing such as amplification, transformation and filtering, displays the instantaneous flow and cumulative flow using a backlit dot matrix liquid crystal display. Selection of electromagnetic flowmeter: When selecting an electromagnetic flowmeter, the following key factors need to be considered: Measurement medium: Electromagnetic flowmeter is suitable for measuring conductive liquids such as acids, alkalis, salt solutions, water, sewage, corrosive liquids, as well as mud, slurry, pulp, etc. It is not possible to measure the flow rates of gases, vapors, and purified water, and it is also not possible to measure liquids with low conductivity, such as petroleum products and organic solvents. Measurement range: The measurable flow range of electromagnetic flowmeter is large, and the ratio of maximum flow to minimum flow is generally above 20:1. Select the appropriate measurement range based on actual needs to ensure measurement accuracy and stability. Pipeline diameter: The pipeline diameter range of electromagnetic flowmeter is wide, ranging from a few millimeters to 3 meters. Select the appropriate flowmeter model based on the actual diameter of the pipeline to avoid measurement accuracy being affected by oversized

Electromagnetic flowmeter for water measurement | Working principle and selection of electromagnetic flowmeter

What are the measurement ranges of electromagnetic flow meters?

2. Working principle and selection of electromagnetic flowmeter

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