YF-S201 Water Flow Sensor - (AD10203)

Description:

The YF-S201 water flow sensor can be used to measure liquid flow in industrial and domestic applications. This sensor basically consists of a plastic valve body, a rotor, and a Hall effect sensor. The rotor rotates when water/liquid flows through the valve, and its speed is directly proportional to the flow rate. The Hall effect sensor provides an electrical pulse with each revolution of the rotor. This water flow sensor module can be easily connected to microcontrollers, Arduino boards, and Raspberry Pi.

Connect this module's PWM output to the microcontroller's interrupt pin and count the number of pulses/interrupts per unit of time. The water flow rate will be directly proportional to the number of pulses counted.

Specs:

• Model: YF-S201
• Working voltage: 5V~24V DC
• Min. Operating Voltage: 4.5V DC
• Sensor type: Hall effect
• Current requirement: 15 mA at 5 V
• Operating temperature range: -25°C ~ 80°C
• Operating humidity range: 35% ~ 90% RH
• Water pressure: ≤ 1.75 MPa
• Flow rate: 1 – 30 L/min
• Cable length: 15 cm
• Connection thread: 1/2″
• Pinout
  • RED: Power input
  • BLACK: Earth
  • YELLOW: PWM output signal

Data sheet