Electromagnetic Open Channel Flowmeter

The Electromagnetic Open Channel Flowmeter is an instrument specifically designed for measuring the flow velocity and rate of fluids in open channels, semi-filled pipes, or under non-constant flow conditions. It operates based on Faraday’s law of electromagnetic induction, generating a magnetic field in the fluid (which must have a certain conductivity) and measuring the induced voltage generated by the fluid cutting the magnetic field lines to calculate the flow velocity, and subsequently the flow rate. Its significant advantage is the absence of any intrusive or obstructing components within the fluid during measurement, thus causing no pressure loss or blockage, making it suitable for fluids containing suspended solids, silt, or scale.

Features:

• Non-Obstructive Design: No intrusive parts are present during measurement, causing no disturbance to the flow field and preventing pressure loss or blockage.
• High-Accuracy Velocity/Flow Measurement: Particularly effective for measuring fluids with uneven velocity distribution or containing impurities, providing accurate average velocity and flow rate.
• Adaptable to Complex Flow Conditions: Shows good adaptability to various flow states, including open channels, trapezoidal channels, and semi-filled circular pipes.
• Suitable for Conductive Fluids: Can accurately measure electrically conductive liquids (typically requiring conductivity greater than 5μS/cm).
• Low Maintenance Requirements: Due to the absence of mechanical moving parts and intrusive sensors, maintenance workload is minimal, suitable for long-term stable operation.