SKU: SENS-0650
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Generic YF-S402C Water Flow Sensor Flowmeter G3/8 0.3-10L/min 5-18V

₹329.00 (Inclusive of all taxes)
Out of Stock

The YF-S402C is a hall-effect-based water flow sensor with a G3/8 thread, designed for 5-18V DC systems and compatible with Arduino, Raspberry Pi, and other microcontrollers for monitoring liquid flow rates from 0.3 to 10 liters per minute.

Features

  • Hall-effect sensor with magnetic rotor for pulse-width output proportional to flow rate.
  • G3/8 threaded plastic valve body for easy inline installation in water lines.
  • Wide operating voltage range from 5V to 18V DC for flexible system integration.
  • Flow measurement range from 0.3 L/min to 10 L/min with ±5% accuracy.
  • Durable construction rated for water pressure up to 0.8 MPa and temperatures from 0°C to 80°C.

Out of stock

Description

The YF-S402C water flow sensor operates on a hall-effect principle, where a magnetic rotor spins as liquid passes through the valve body. The embedded hall sensor detects each rotation, generating a digital pulse signal whose frequency is directly proportional to the volumetric flow rate. This output can be easily read by a microcontroller’s interrupt or counter pin for precise flow monitoring and control.

Constructed with a robust plastic housing and standard G3/8 threads, the sensor is designed for direct inline installation in water systems. It is rated for a maximum working pressure of 0.8 MPa and can operate in environments with 5% to 90% relative humidity, making it suitable for a variety of residential and light industrial liquid monitoring applications.

Key Features

  • Hall-effect sensing provides a clean, digital pulse output for accurate flow measurement.
  • Standard G3/8 thread (15mm port size) ensures compatibility with common plumbing and tubing fittings.
  • Wide 5-18V DC operating voltage allows for direct connection to 5V logic systems or higher-voltage industrial controllers.
  • Durable plastic valve body and sealed design offer reliable, waterproof operation.
  • Low 10mA operating current minimizes power consumption for battery-powered or embedded applications.
  • Broad temperature tolerance from 0°C to 80°C supports use in both cold and hot water lines.
  • Optimized performance-to-cost ratio for prototyping, automation, and process control projects.

Applications

  • Precise water flow monitoring in DIY hydroponic and aquaponic growing systems.
  • Liquid consumption tracking and leak detection in residential smart water meters.
  • Flow rate control and feedback in coffee machines, beverage dispensers, and vending equipment.
  • Irrigation system management for garden sprinklers and agricultural watering networks.
  • Process cooling loop monitoring in 3D printers, laser cutters, and small industrial machinery.

Technical Specifications

Model NumberYF-S402C
Flow Range0.3 to 10 L/min
Operating Voltage5 to 18 V DC
Operating Current10 mA (typical)
Output SignalDigital Pulse (Hall Effect)
Thread StandardG3/8 (15mm Port)
Max Water Pressure≤ 0.8 MPa
Operating Temperature0°C to 80°C
Operating Humidity5% to 90% RH
Accuracy±5%
Body MaterialPlastic

Frequently Asked Questions

What is the output signal of the YF-S402C flow sensor?

The YF-S402C outputs a digital pulse signal via its hall-effect sensor. Each pulse corresponds to a specific volume of liquid passing through the sensor, allowing a microcontroller to calculate flow rate by counting pulses over time.

What is the maximum operating voltage and pressure for this sensor?

The sensor can operate from 5V to 18V DC. It is rated for a maximum working water pressure of 0.8 MPa (approximately 116 psi). Do not exceed these limits to ensure accurate measurement and prevent damage.

How do I interface the YF-S402C with an Arduino or Raspberry Pi?

Connect the sensor's signal (yellow) wire to a digital interrupt pin on your microcontroller. The red and black wires connect to your power supply (5-18V) and ground. Use a library or code to count pulses to calculate the flow rate in L/min.

Can this sensor be used with hot water or other liquids?

Yes, the sensor is rated for an operating temperature range of 0°C to 80°C, making it suitable for both cold and hot water applications. Ensure the liquid is compatible with the plastic housing material.

Package Includes

  • 1 x YF-S402C Water Flow Sensor (G3/8 thread)

Additional Information

Weight 0.034 kg
Dimensions 4 × 5 × 2 cm