2 Inch Water Flow Sensor YF - DN50

🧠 What Is It?
A large-size water flow sensor designed for high flow rate measurement.
Uses a Hall-effect turbine mechanism to measure the flow of liquid.
Commonly used in industrial, agricultural, and high-volume water systems.
🔍 Key Features
Large Diameter: 2 inch (DN50 pipe size)
High Flow Capacity: Suitable for large pipelines
Hall Effect Sensor: Provides digital pulse output
Waterproof & Durable Design
Low Power Consumption
Easy Installation (inline pipe mounting)
📊 Technical Specifications
Parameter
Value
Operating Voltage
5V – 18V DC
Current Consumption
≤15 mA
Flow Range
10 – 200 L/min
Sensor Type
Hall-effect
Output Type
Pulse (square wave)
Pulse Output
~12 pulses per liter
Accuracy
±5%
Max Pressure
≤1.75 MPa
Operating Temp.
Up to 80°C
Humidity Range
35% – 90% RH
 
⚙️ How It Works
Water flows through the sensor body.
An internal rotor (turbine) spins with the flow.
A Hall-effect sensor detects rotor rotation.
Each rotation generates pulse signals.
Pulse frequency is proportional to flow rate.
🔌 Pin / Wire Configuration
Red → VCC (5–18V)
Black → GND
Yellow → Pulse Output (Signal)
📌 Output is a digital pulse signal that can be read by a microcontroller.
📐 Output Formula (Typical)
Frequency relation:
F = 0.2 × Q
(Q = flow rate in L/min)
Or:
~12 pulses = 1 liter of water
📌 Applications
Water supply systems
Agricultural irrigation systems
Industrial liquid flow monitoring
Water treatment plants
Smart water management / IoT systems
Cooling and circulation systems
⚠️ Important Notes
Only for Clean Liquids: Avoid debris/dirty water (can damage rotor).
Flow Direction Matters: Follow arrow marking for accuracy.
Not for Very Low Flow: Minimum flow required to rotate turbine.
Calibration Needed: For precise measurements in projects.
Use Proper Pipe Size: Designed specifically for DN50 (2 inch pipes).
🛠 Summary
Type: Turbine + Hall-effect flow sensor
Pipe Size: 2 inch (DN50)
Output: Pulse signal
Range: 10–200 L/min
Best Use: High-flow water measurement systems