Water Flow Sensor YFS402

This Water Flow Sensor YFS402 is basically a small turbine whose output signal is a series of digital pulses. The frequency of the pulses is proportional to the flow rate of the liquid passing through the sensor. That digital signal, whose frequency is in the range between 0Hz and 100Hz, can be read directly through one of the digital input/output pins of a microcontroller. Water Flow Sensor YFS402 is easy to handle.

SPECIFICATIONS of Water Flow Sensor YF S402

• Mini. Working Voltage: DC 4.5V
• Max. Working Current: 15mA (DC 5V)
• Working Voltage: DC 5V~24V
• Flow Rate Range: 1~ 5L/min
• Load Capacity: ≤10mA (DC 5V)
• Operating Temperature: ≤80C
• Liquid Temperature: ≤120C
• Operating Humidity: 35%~90%RH
• Water Pressure: 0.35 MPa
• Storage Temperature: -25 ~ +80C
• Storage Humidity: 25% ~ 95%RH
• Insulation resistance > 100Mっ
• Pipe Gauge: 1/4 inch outer diameter
• Error: +/-2L/min;
• Flow pulse characteristic f = (73 * Q) ± 2% Q = L / MIN
• Output pulse duty cycle 50% ± 10%
• Dimensions : 2.28 in x 1.38 in x 1.06 in (5.8 cm x 3.5 cm x 2.7 cm)
• Weight : 1.02 oz (29 g)
• Thread Size : G 1/4″