HWFB6 is a magnetic sensing flowmeter. A check piston is placed in the pipeline to push the check piston when the liquid flows, and the magnetic piston displacement changes the induced magnetic field. The flow rate is detected through the magnetic field strength. It has the advantages of small size, easy setting, built-in intelligent circuit, can set the upper and lower limit of flow alarm value at will, can remotely monitor the real-time flow status, and can set any parameters on site, with good anti-pollution performance. Suitable for measuring all kinds of liquid media, with good anti-fouling and anti-scaling properties of media, such as water, oil, coolant, glycol solution, abrasive liquid. Widely used in the field of industrial automation, petroleum, chemical, metallurgy, scientific research, machine tools, processing centers and so on.