Water Flow Sensor Magnet

A water flow sensor magnet is a small permanent magnet used inside flow meters to generate signals for measuring water flow. It is typically embedded in a rotating component, where it interacts with a Hall sensor or reed switch to detect flow speed. The accuracy of the sensor depends on the stability and consistency of the magnetic field.

A water flow sensor is an instrument that detects water flow and outputs pulse, current, or voltage signals through induction. The output signal is linearly proportional to the flow rate, allowing it to be used for water control management and flow calculation based on relevant conversion formulas and calibration curves.

As a core component of the system, water flow sensor magnets are commonly made from injection-molded neodymium or ferrite materials, which are widely used in such applications.

A water flow sensor is mainly composed of a copper valve body, a water flow rotor assembly, a steady flow system, and a Hall component. It is usually mounted at the inlet of the heater to measure the influent flow.

When water flows through the sensor, the magnetic rotor assembly rotates. The Hall component outputs corresponding pulse signals and feeds them back to the controller. The controller then adjusts the current of the proportional valve, thereby regulating gas usage according to the flow rate.

Differential pressure water gas linkage valve is mechanical, with a complex structure and large volume, but the control circuit is simple; The water flow sensor is electrical, with a relatively simple structure and small volume, but the control circuit is complex.

More importantly, the former has high starting water pressure and large resistance of the waterway system, so it is not suitable to be used in high-capacity water heaters above 10L / min; The latter has low starting water pressure and low resistance of waterway system. It has been widely used in large capacity water heaters above 10L / min.

Water flow rotor assembly mainly consists of turbine switch housing, magnetic rotor, and brake ring. Water flow sensor magnet is essentially a hall effect sensor magnet. Hall component will conduct when different magnetic poles toward it, then cut off once away.

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