Description of the YF-S201
YF-S201 is a water flow measurement sensor with high-grade quality sealing property. It works on the Hall effect principle and with a flow rate range of 1~30L/min. The module has three pins: Power, Ground, and the Analog output. YF-S201 consumes very little current and can work with an allowing pressure of ≤1.75MPa.
Features of YF – S201
- Operating Voltage: 4.5V to 18V DC
- Output type: 5V TTL
- Maximum current draw: 15mA at 5V
- The sensor used: Hall Effect
- Working Flow rate: 1 to 30 Liters/Minute
- Accuracy: ±10%
- Pulses per Liter: 450
- Output duty cycle: 50% +-10%
- Maximum water pressure: 2.0 MPa
- Flow rate pulse characteristics: Frequency (Hz) = 7.5 * Flow rate (L/min)
- Outer diameter: 20mm
- Intake diameter: 9mm
- Outlet diameter: 12mm
Pin configuration of YF-S201
YF – S201 has 3 Pins for power and the output. The table below explains the color, pin type, and function of the pin.
| Colour | Pin type | Function |
| Red | Power | To provide power to the module |
| Black | Ground | Connected to the ground terminal |
| Yellow | Signal | Analog output from the sensor |
Applications of YF – S201
- Agriculture
- Food processing
- Coffee/Tea makers
- Water Management
- Mining Industry
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