Water Flow Sensor
YF-S201 Hall Effect Water Flow Meter / Sensor
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 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.
- Model: YF-S201
- Sensor Type: Hall effect
- Working Voltage: 5 to 18V DC (min tested working voltage 4.5V)
- Max current draw: 15mA @ 5V
- Output Type: 5V TTL
- Working Flow Rate: 1 to 30 Liters/Minute
- Working Temperature range: -25 to +80℃
- Working Humidity Range: 35%-80% RH
- Accuracy: ±10%
- Maximum water pressure: 2.0 MPa
- Output duty cycle: 50% +-10%
- Output rise time: 0.04us
- Output fall time: 0.18us
- Flow rate pulse characteristics: Frequency (Hz) = 7.5 * Flow rate (L/min)
- Pulses per Liter: 450
- Durability: minimum 300,000 cycles
- Cable length: 15cm
- 1/2" nominal pipe connections, 0.78" outer diameter, 1/2" of thread
- Size: 2.5" x 1.4" x 1.4"
- Red wire : +5V
- Black wire : GND
- Yellow wire : PWM output.
MQ-3 Gas Sensor ModuleSpecial Price Rs 157.00 Rs 133.05 was Rs 236.00Heat Flame SensorSpecial Price Rs 210.04 Rs 178.00 was Rs 313.88
RFID RC522 MFRCSpecial Price Rs 278.48 Rs 236.00 was Rs 418.90MG90S Servo MotorRs 293.82 Rs 249.00
Robocraze-A2212 1400KV Brushless Motor + SimonK 30A ESC + 1045 Propeller SetSpecial Price Rs 840.16 Rs 712.00 was Rs 1,260.24Metal Detector Sensor ModuleSpecial Price Rs 348.82 Rs 295.61 was Rs 719.80
Stepper Motor(28YBJ-48) with ULN2003 Driver BoardSpecial Price Rs 234.82 Rs 199.00 was Rs 351.64Vibration Sensor ModuleSpecial Price Rs 90.00 Rs 76.27 was Rs 177.00