Water Flow Sensor YF-S201

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.