3/4 inch Water Flow Sensor YF-S403

3/4 inch Water Flow Sensor YF-S403 

The YF-S403 is a 3/4-inch inline water flow sensor designed to measure the flow rate and total volume of water passing through a pipe. It uses an internal turbine rotor and a Hall-effect sensor to generate electrical pulses as water flows. Each rotation of the turbine produces pulses that are proportional to the flow speed. By counting these pulses with a microcontroller or control system, accurate flow rate and volume measurements can be obtained. The sensor is compact, lightweight, and easy to install, making it ideal for automation, water monitoring, and pump control applications.

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Features

• 3/4-inch threaded pipe connection (G3/4)
• Built-in Hall-effect sensor for pulse output
• Digital pulse signal proportional to flow rate
• Simple 3-wire interface
• Low power consumption
• Lightweight and corrosion-resistant plastic body
• High measurement reliability
• Easy inline installation
• Compatible with Arduino, ESP32, Raspberry Pi, and other controllers
• Long service life with minimal maintenance

Applications

• Water tank monitoring systems
• Pump control and automation
• Irrigation and agriculture systems
• Water dispensers and vending machines
• Smart water meters
• Industrial liquid monitoring
• Hydroponics and aquariums
• DIY and IoT water projects