With this sensor you can easily measure the flow of liquids (water).
The sensor has a standard 1/2" coupling (21mm) on both sides and is therefore easy to connect to, for example, a Gardena garden system (see images)(Gardena coupling not included).
The output of the sensor gives 5 pulses per second with a duty cycle of approximately 50% for each liter of fluid passing through per minute: Q [L/min] = fpulse [Hz]/5.
Specifications:
Voltage range: 5-15V
Pulse frequency per L/min: 5Hz
Measuring range: 1-30L/min (with an accuracy of +-10%)
Maximum water pressure: 17.5bar
Working temperature: -25-80°C
Duty cycle pulse: 50% +-10%
Voltage pulse (with 5V as input voltage): 4.7V
Pinout:
Red: Vcc/plus (5-15V)
Black: GND/min
Yellow: Signal
Example with a similar sensor. Adjust the next piece of code on line 17:
float calibrationFactor = 4.5;
To:
float calibrationFactor = 5;
Note: The liquid can only run in one direction, this is indicated by an arrow!
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