The water flow sensor consists of a plastic valve body, a water rotor and a hall-effect sensor. When the water flows through the rotor, rotor rolls and the speed of it changes with a different rate of flow. The hall-effect sensor outputs the corresponding pulse signal. This type of sensor can be found on different diameters, water pressure (MPa.. For more details and guides related to using Hall-effect sensors in flow meter applications, see Table 2 and Table 3 . Table 2. Alternative Device Recommendation. Device Characteristics Design Considerations TMAG5231 Low-power, low-voltage (1.65 V to 5.5 V) omnipolar Hall-effect switch. Available in SOT-23
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See Fig. 5.4.1 5.4. 1. As a gear tooth passes the sensor, the magnetic field at the sensor changes, and a voltage is induced across the Hall effect device. Hall effect sensors are used to measure rotation speed of motors, fans, tape machines, and disk drives [57]. Relatedly, Hall effect devices are used as flow rate sensors.. The YF-S201 Water Flow Sensor is a hall-effect sensor designed to measure the rate of water flow passing through it. It utilizes the principle of the Hall effect, which involves the detection of changes in a magnetic field caused by the flow of fluid. This sensor generates electrical pulses proportional to the volume of water passing through it.
