Water Flow Sensor YF-S401 0.3 - 6 L/min for arduino applications etc ...

Product SVR242039. Flow sensor for water 0.3 - 6 L / min. With this sensor you can easily measure the flow of liquids (water). The sensor has a 7mm coupling on both sides and is therefore easy to connect to a 6mm hose. The output of the sensor gives 98 pulses per second with a duty cycle of approximately 50% for each liter of fluid passing through per minute: Q [L / min] = fpulse [Hz] / 98.

Red: Vcc = plus (5-24V)

Black: GND = minus

Yellow: Signal

Voltage range: 5-24V
Pulse frequency per L/min: 98Hz
Measuring range: 0.3-6L/min (with an accuracy of +-10%)
Maximum water pressure: 0.8MPa
Working temperature: -25-80oC
Duty cycle pulse: 50% +-10%
Voltage pulse (with 5V as input voltage): 4.7V