1 Inch Water Flow Sensor YF-G1 DN25

1 Inch Water Flow Sensor (YF-G1 DN25)

High Flow Measurement Hall Effect Industrial Use

What is YF-G1 DN25?

The YF-G1 DN25 is a large water flow sensor designed to measure flow rate of liquids (mainly water) in pipelines.

DN25 / 1 inch refers to pipe size compatibility Suitable for medium to high flow applications

Commonly used in:

• Water systems

• Industrial pipelines

• Automation projects

• Working Principle

• Based on Hall Effect sensing

• Inside the sensor:

  • A rotor (impeller) spins when water flows

  • A magnetic element rotates with it

  • Hall sensor detects rotation and generates s through sensor

  • Rotor spins

  • Speed flow rate

  • Pulses generated sent to controller

  • Flow rate is calculated from pulse frequency

    Pin Configuration

    Typical 3 wires:

  • Red VCC (5V18V)

  • Black GND

  • Yellow Pulse Output

  • Output is a digital pulse signal

    Output Behavior

  • Output = Pulse signal (frequency)

  • Flow rate relation:

  • F = k Q

  • F = Frequency (Hz)

  • Q = Flow rate (L/min)

  • Example:

  • Approx formula: F 4.8 Q

  • Technical Specifications

  • 5V 18V DC

  • Current Consumption: 15 mA

  • Flow Range: 2 100 L/min

  • Accuracy: 3%

  • Working Temperature: -20C to +85C

  • Max Pressure: 2 MPa

  • Output Type: Digital pulse

  • Material: Plastic body with internal rotor

  • Plastic valve body

  • Water rotor (impeller)

  • Magnetic rotor

  • Hall-effect sensor

  • Converts mechanical flow electrical pulses

    Key Features

  • Supports high flow rates

  • Non-contact electronic sensing

  • Good sealing and durability

  • Easy installation (inline pipe fitting)

  • High sensitivity and stable output

  • Smart water meters

  • Industrial automation

  • Water vending machines

  • Irrigation systems

  • Liquid dispensing machines

  • Advantages

  • Simple and reliable design

  • Accurate for medium/high flow

  • Easy interfacing with Arduino/ESP32

  • Low power consumption

  • Limitations

  • Works only with liquids (mainly clean water)

  • Accuracy reduces at very low flow

  • Needs calibration for precise measurement

  • Sensitive to debris (needs filter)

  • Important Notes

  • Install in correct flow direction (arrow marked)

  • Use filter for dirty water

  • Always mount in-line with pipe

  • Do not exce limits

  • Summary

    The YF-G1 DN25 Water Flow Sensor is a:

    Hall-effect based flow meter Designed for 1-inch pipelines Provides pulse output proportional to flow

    Ideal for:

  • Water monitoring systems

  • Industrial flow measurement

  • IoT-based smart metering