AdraXx YF-S201 Water Flow Sensor

This flow sensor is constructed of solid plastic;easy to install in a standard (1/2 ) piping system;measures the flow of water by means of an internal water rotor that activates a Hall effect sensor;it sends pulses The sensor is isolated from the water and the rotor;so it is always kept dry and safe. With the help of this sensor you can enter the world of Home Automation;monitoring the consumption of water in your home;or you can make an automated volume dispenser with the help of an additional valve. The sensor has three wires: red (vcc: 5-18VDC);black (ground) and yellow (Hall effect sensor pulse output). By counting the pulses the volume or flow rate of the water can easily be measured (the average volume per pulse is 2.25mL). Note that this is not a precision sensor so orientation;water pressure and other conditions may affect the measurement. It is recommended to calibrate the sensor by taking measurements with known volumes. Calibrated can reach an accuracy of up to 10%.