YF-S201 G1/2 Water Flow Sensor


Available on backorder



Water flow sensor consists of a plastic valve bodya water rotorand a hall-effect sensor. When water flows through the rotorrotor rolls. Its speed changes with different rate of flow. The hall-effect sensor outputs the corresponding pulse signal. This one is suitable to detect flow in water dispenser or coffee machine.

We have a comprehensive line of water flow sensors in different diameters. Check them out to find the one that meets your need most.

For the sense of the water flow rate on the following equipments: Thermostatic water heater, water purifier, water dispenser, smart card equipment, coffee machine etc.
Calculation Formula:f=(0.2*Q)   Q=L/Min

1. When magnetic material is close with the sensor, its characteristics may vary.
2. In order to avoid particle debris, the sensor must be installed after a filter.
3. The flow sensor installation has to avoid strong vibration and shaking of the environment, so as not to affect the sensor’s measurement accuracy.


  • CompactEasy to Install
  • High Sealing Performance
  • High Quality Hall Effect Sensor
  • RoHS Compliant


  • Waterproof,Heat resistance,pressure resistance,cold resistance.
  • Easy to install.
  • Frequency: F=7.5 * Q (L / Min) error: ± 2% voltage :3.5-24VDC, current can not exceed 10mA, 450 output pulses/liters,
  • F=onstant * units of flow (L / min) * time (seconds).
  • Flow range:1-30L/min
  • Minimum rated working voltage:DC4.5 5V-24V
  • Maximum current:15 mA(DC 5V)
  • Working voltage range:DC 5-18 V
  • Load capacity:≤10 mA(DC 5V)
  • Operating Temp:≤80,Operating humidity:35%-90%RH
  • Allow compression:Water pressure 1.75 Mpa below
  • Storage Temperature:-25-+80-
  • Storage humidity:25%-95%RH
  • Output Waveform:Square Wave,output pulse singal.
  • ROHS Compliant.
  • Cable length:15cm.


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YF-S201 G1/2 Water Flow Sensor


Available on backorder