Water Flow Sensor YF-S201
YF-S201 is a Hall-effect water flow sensor commonly used with microcontrollers like Arduino to measure the rate and volume of liquid passing through a 1/2" pipe. It works by using an internal turbine with a magnet that rotates as water flows, triggering a Hall-effect sensor to output a series of digital pulses.
Core Specifications
- Operating Voltage: 4.5V to 18V DC (some versions support up to 24V).
- Flow Rate Range: 1 to 30 Liters/Minute.
- Output Type: 5V TTL (Digital pulse/Square wave).
- Maximum Pressure: ≤ 1.75 MPa (approx. 250 PSI).
- Accuracy: ±10% (can be improved with manual calibration).
- Pipe Connection: Standard G1/2" (half-inch) thread.