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)
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 |
How to use YF - S201
The YF-S201 connections are pretty simple, the module contains 3 pins which are generally colour coded as red, black, and yellow.
The Red is the power pin that is connected to the 5V of the microcontroller, the black is the ground pin and the yellow is the signal output pin that can be connected to the digital pin of the microcontroller.
