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.
Specifications: 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: -25-80Derajat C Duty cycle pulse: 50% +-10% Voltage pulse (with 5V as input voltage): 4.7V Dimensions: See images Pinout: Red: Vcc/plus (5-24V) Black: GND/min Yellow: Signal