Working principle of flowmeter

The flowmeter measures the volumetric flow rate of conductive media based on Faraday's law of electromagnetic induction. Its core components are the electromagnetic coil (with adjustable magnetic field strength B) and electrode inside the measuring tube. When a conductive fluid (such as industrial wastewater, acid-base solution) cuts the magnetic field lines vertically at an average flow velocity υ, the electrode induces a linear electromotive force UE (typical sensitivity 0.1-5mV/(m/s)), which can be directly converted into a flow rate value (accuracy ± 0.5%) through the formula Q=π D ² υ/4). This technology is suitable for DN15-DN3000 pipe diameters, with a medium conductivity greater than 5 μ S/cm, and can accurately monitor instantaneous/cumulative flow rates in chemical processes or wastewater treatment. As a branch type, glass flow meters use vertically installed scale tubes to directly observe the flow rate of transparent liquids (temperature range -20 ℃~120 ℃). It is necessary to regularly clean the pipe wall attachments and avoid mechanical impact. Anhui Tiankang customized solution for electromagnetic/glass flow meters, supporting special parameter adaptation such as medium corrosiveness and high temperature conditions. Technical personnel can assist in selection, installation, and commissioning.