Liquid Flow Meter - Plastic 1/2" NPS Threaded
Liquid Flow Meter - Plastic 1/2" NPS Threaded
Liquid Flow Meter - Plastic 1/2" NPS Threaded
Liquid Flow Meter - Plastic 1/2" NPS Threaded
Liquid Flow Meter - Plastic 1/2" NPS Threaded
Liquid Flow Meter - Plastic 1/2" NPS Threaded

Liquid Flow Meter - Plastic 1/2" NPS Threaded

Adafruit ProductID: 828
ER-1077
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AED30.00
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Description

If you want to Measure water flow for your project, use this handy flow meter. You need to connect this in line with your water line, it uses pinwheel sensor to measure the amount of liquid flown through it. It uses hall effect sensor fitted inside to measure the wheel rotation, which is fitted in with magnet. It comes with three wires: red (5-24VDC power), black (ground) and yellow (Hall effect pulse output). By counting the pulses from the output of the sensor, you can easily track fluid movement: each pulse is approximately 2.25 milliliters.

Note: This isn't a precision sensor, and the pulse rate does vary a bit depending on the flow rate, fluid pressure and sensor orientation. It will need careful calibration if better than 10% precision is required. However, its great for basic measurement tasks!


Use this Arduino example sketch that can be used to quickly test the sensor - This example will calculate the approximate quantity of fluid in liters and display on an LCD or the serial monitor.

Specifications:

Electrical:

  • Working Voltage: 5 to 18VDC
  • Max current draw: 15mA @ 5V
  • Working Flow Rate: 1 to 30 Liters/Minute
  • Working Temperature range: -25 to 80°C
  • Working Humidity Range: 35%-80% RH
  • Maximum water pressure: 2.0 MPa
  • Output duty cycle: 50% +-10%
  • Output rise time: 0.04us
  • Output fall time: 0.18us
  • Flow rate pulse characteristics: Frequency (Hz) = 7.5 * Flow rate (L/min)
  • Pulses per Liter: 450
  • Durability: minimum 300,000 cycles

Mechanical:

  • 1/2" NPS nominal pipe connections, 0.78" outer diameter, 1/2" of thread
  • Size: 2.5" x 1.4" x 1.4"
Image and contents taken from Adafruit

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