1/4 inch Water Flow Sensor – YF-S402

This 1/4 inch water flow sensor 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.

Specifications:-

• Model: YF-S402
• Minimum rated working voltage: DC 5~24V;
• Max. working current: 15mA (DC 5V);
• Working voltage range: DC 5~18V;
• Load capability: <= 10mA (DC 5V);
• Working temperature: <= 80’C;
• Humidity range: 35%~90%RH (no frost);
• Water pressure: <1.75Mpa;
• Storage temperature: -25~80’C; Storage humidity: 25~95%RH;
• Flow range: 1~5L/min’; Frequency: 4380 pulse for 1L through the sensor
• Dimensions: 2.28 in x 1.38 in x 1.06 in (5.8 cm x 3.5 cm x 2.7 cm)
• Thread Size : G1/4″

* product image for illustration purposes only. actual product may vary.