Water flow sensor (Sea) YF-S201 Flowmeter  G1/2 1-30L/min Black


Water flow sensor consists of a plastic valve body, a water rotor, and a hall-effect sensor. When water flows through the rotor,the rotor rolls. Its speed changes with different rate of flow. The hall-effect sensor outputs corresponding pulse signals. This one is suitable to detect flow in water dispenser or coffee machine.


This sensor sits in line with your water line and contains a pinwheel sensor to measure how much liquid has moved through it. There’s an integrated magnetic hall effect sensor that outputs an electrical pulse with every revolution. The hall effect sensor is sealed from the water pipe and allows the sensor to stay safe and dry.


The sensor comes with three wires: red (5-24VDC power), black (ground), and yellow (Hall effect pulse output). By counting the pulses from the output of the sensor, you can easily calculate the water flow rate. Each pulse is approximately 2.25 milliliters. Note this isn’t a precision sensor, and the pulse rate does vary a bit depending on the flow rate, fluid pressure, and sensor orientation. It will need careful calibration if better than 10% precision is required. However, it’s great for basic measurement tasks!



Water Flow Sensor Interfacing with Arduino – Measure Flow Rate

Water flow rate and volume measurement using Arduino

Arduino Water Flow Sensor to Measure Flow Rate & Volume

YF-S201 WaterFlow Sensor 1-30L/min