OOD!
Price: $7.27

Water flow sensor consists of magnetic core, rotating impeller, external casing and sensor and a hall-effect sensor. When water flows through the rotor, rotor rolls, it activates the magnetic core to trigger switch action speed changes with different rate of flow. The hall-effect sensor outputs the corresponding pulse signals, users can get the flow speed via detecting the pulse. This G 1/8? water flow sensor is suitable to detect flow in water dispenser or coffee machine. There are also lots of other water flow sensors in other diameters for your choice.
The water flow sensor outputs pulse proportional to the water flow with: Pulse Frequency = Flow* 98.That is, if the output frequency is 48, then the water flow: 48/98= 0.5(L/min)
Connect the water flow sensor to microcontroller as belows:

    G1/4
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Features

  • The appearance of lightweight and flexible products, small size, easy to install.
  • The impeller with a stainless steel shaft inside
  • The ring with the upper and lower force of the structure
  • Hall elements imported, watertight design, to prevent water
  • Multi-pole high temperature stainless steel magnet than the traditional high-precision 3 times.
  • All raw materials are in line with ROHS testing standards.

Specifications

  • Working Voltage?DC 5V-12V
  • Minimum rated operating voltage: DC3.5V
  • Maximum operating current: 15mA (DC5V)
  • load capacity: ?10mA(DC 5V)
  • Operating temperature range: ?80?
  • Working humidity range?35% ~90%RH
  • Working pressure resistance?Water pressure below 1.75Mpa
  • Flow range?0.5-5L/min

Package list

  • G1/8" Water Flow Sensor x1

Wiki & External links