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SKU:YFS201-FLOW
YF-S201 Water Flow Measurement Sensor — 1–30 L/min
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Rs.600.00
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Rs.600.00
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YF-S201 Water Flow Measurement Sensor — 1 to 30 L/min
The YF-S201 is a compact Hall effect-based water flow sensor that measures the volume of liquid passing through a pipe. As water flows, a rotor spins and the built-in Hall effect sensor generates pulses proportional to the flow rate. Connect it to an Arduino or ESP32 to build smart water meters, irrigation controllers, or leak detection systems with ease.
Technical Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 5V – 18V DC |
| Max Current | 15 mA (at 5V) |
| Flow Rate Range | 1 – 30 L/min |
| Pulse Frequency | F = 7.5 × Q (Q in L/min) |
| Output Signal | 5V TTL square wave pulses |
| Working Pressure | ≤ 1.75 MPa |
| Waterproof Rating | IP68 |
| Thread Size | G1/2 inch |
| Operating Temperature | -25°C to +80°C |
| Liquid Type | Clean water, non-corrosive liquids |
Pinout (3-Wire)
| Wire Color | Name | Description |
|---|---|---|
| Red | VCC | 5V – 18V Supply |
| Black | GND | Ground |
| Yellow | Signal | Pulse output (connect to interrupt pin) |
Key Features
- Hall effect pulse output — easy to count with any microcontroller interrupt pin
- IP68 waterproof body — safe for inline pipe installation
- Wide flow range: 1 to 30 L/min
- G1/2 inch thread — standard plumbing fitting
- Compatible with Arduino, ESP32, STM32, Raspberry Pi
Flow Rate Formula
Pulse frequency (Hz) = 7.5 × Flow rate (L/min)
Volume per pulse ≈ 2.25 mL
Applications
- Smart water meters and billing systems
- Automated irrigation and drip systems
- Aquarium and hydroponics flow monitoring
- Industrial liquid flow measurement
- Leak detection and water conservation systems