Which type of flow meter utilizes electrodes for its measurements?

Magnetic flow meters, also known as mag meters, utilize electrodes to measure the flow of conductive fluids. The operation of these meters is based on Faraday's law of electromagnetic induction. When a conductive fluid passes through a magnetic field created by the flow meter, it induces a voltage proportional to the flow velocity. This induced voltage is measured by electrodes located at the meter’s pipe wall, translating the electrical signal into a flow rate reading.

This method is particularly advantageous for applications involving slurry, wastewater, or any conductive liquids, as it provides an accurate, non-intrusive measurement without any moving parts, reducing wear and maintenance. Other types of flow meters operate on different principles. For instance, Coriolis flow meters measure mass flow using the deflection of a vibrating tube, ultrasonic flow meters rely on sound waves to determine flow velocity, and mechanical flow meters typically involve moving components to measure fluid flow.