DS Robotics YF-S201 Water Flow Sensor | YFS201 Water Flowmeter | YFS201 Water Sensor | Hall Effect Water Flow Sensor Electronic Components Electronic Hobby Kit

Yf-s201 hall effect water flow meter / sensorthis 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 water flow. 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, its great for basic measurement tasks!we have as example arduino sketch that can be used to quickly test the sensor, it will calculate the approximate flow of water in liters/hour.the pulse signal is a simple square wave so its quite easy to log and convert into liters per minute using the following formula.pulse frequency (hz) / 7.5 = flow rate in l/min.features:model: yf-s201sensor type: hall effectmax current draw: 15ma @ 5voutput type: 5v ttlworking temperature range: -25 to +80„ƒworking humidity range: 35%-80% rhaccuracy: ±10%output duty cycle: 50% +-10%output rise time: 0.04usoutput fall time: 0.18usflow rate pulse characteristics: frequency (hz) = 7.5 * flow rate (l/min)pulses per liter: 450cable length: 15cm1/2\ nominal pipe connections, 0.78\ outer diameter, 1/2\ of thread