Magnetic flow meter, simply known as mag flow meter is a volumetric flow meter which is ideally used for wastewater applications and other applications that experience low pressure drop. The device doesn’t have any moving parts and cannot work with hydrocarbons and distilled water. Mag flow meters are also easy to maintain. Working Principle of Magnetic Flow Meter Based on Faraday’s Law The magnetic flow meter works on Faraday’s Law and can be simply understood by most. The Faraday’s Law states that the voltage induced across any conductor (that moves at a right angle through the magnetic field) is proportional to the velocity of the conductor. Thus- E is proportional to V x B x D. [E is the voltage generated in a conductor, V is the velocity of the conductor, B is the magnetic field strength and D is the length of the conductor]. It is very important that the wastewater that is to be measured using the magnetic flow meter must be electrically conductive. The Faraday’s Law indicates that the signal voltage (E) is dependent on the average liquid velocity (V), the length of the conductor (D) and the magnetic field strength (B). The magnetic field will thus be established in the cross-section of the tube, in the case of a wafer-style flow meter. Basically when the conductive liquid flows through the magnetic field, voltage is induced. To measure this generated voltage (which is proportional to the velocity of the flowing liquid), two stainless steel electrodes are used which are mounted opposite each other. The two electrodes which are placed inside the metering pipe are then connected to an advanced electronic input that has the ability to process the signal. The processed signal is fed into the microprocessor that calculates the volumetric flow of the waste water. The processed signal also controls the various outputs on the terminal board. Important Points to Note The magnetic flow meter works on a principle that is complex when not understood and easy when rightly used. The results will come out well only when everything within the magnetic flow meter is placed properly. For doing this it is important that everything is done scientifically and correctly. If the device is not rightly placed the results will be largely affected. Thus to first set up the device expert help should be taken. Remember that if the installation is wrong, its long-term effect will be harmful as the results will be flawed. It is always best to hire experienced experts who have installed many magnetic flow meters. It is true that the flow meter can be self-installed after taking online lessons or reading up a few books that explain the Faraday’s principle in details. In the online space, there are several self-help and tutor-based lessons that give detailed explanation on how a magnetic flow meter works. If you want to learn the usage of the device yourself, these online tutorials are of great help. About Author- This post is shared by spiremt.com, which is a leading supplier of magnetic flow meter, water flow meter, ultrasonic heat meters, digital flow meters and more. For more information visit at www.spiremt.com