DC 5-18V Hall Effect Water Flow Sensor – 1-30L/min
DC 5-18V Hall Effect Water Flow Sensor – 1-30L/min
Monitor and manage your water systems with confidence using this DC 5-18V Hall Effect Water Flow Sensor. Designed for a wide range of home, garden, and DIY automation projects, this compact flowmeter accurately detects liquid flow rates and sends a clean pulse signal to your controller or microcontroller — making it ideal for irrigation systems, water dispensers, aquariums, and more.
Key Features
- Wide Voltage Range: Compatible with DC 5V to 18V power supplies, including standard 12V systems — versatile enough for most projects.
- Hall Effect Technology: Uses an imported Hall effect element for reliable, non-contact flow detection and accurate pulse output.
- Waterproof Construction: The seal ring is designed with top-to-bottom compression force to prevent water leakage. The wiring is fitted with a waterproof seal rubber ring, and inlet waterproof silicone further reinforces moisture protection.
- Flow Rate: Measures liquid flow from 1–30 L/min, suitable for a variety of low-to-medium flow applications.
- Rated Working Pressure: Up to 1.75 MPa — built to handle real-world water pressure conditions.
- Easy Wiring: Simple 3-wire connection — red wire to positive (VCC), black wire to ground (GND), yellow wire to signal output.
- Durable Plastic Body: Lightweight yet sturdy housing that resists corrosion and is easy to clean.
- Available in 2 Color Options: Choose the style that fits your setup.
Specifications
- Operating Voltage: DC 5V – 18V
- Flow Range: 1 – 30 L/min
- Working Pressure: ≤ 1.75 MPa
- Body Material: Plastic
- Output Type: Hall pulse signal
- Connection: 3-wire (VCC / GND / Signal)
Ideal For
- Garden drip irrigation controllers
- Aquarium and fish tank water management
- DIY water dispensing and vending machines
- Arduino, Raspberry Pi, and other microcontroller projects
- Household water monitoring systems
Installation Tips
Connect the red wire to your power supply positive (VCC), the black wire to ground (GND), and the yellow wire to your signal/input pin. Ensure all connections are secure and waterproofed before operation. Mount the sensor in line with the water flow direction as indicated on the body.
For guidance on safe electrical wiring and DIY project safety standards, visit the U.S. Consumer Product Safety Commission (CPSC).
Frequently Asked Questions
Q: What voltage does this Hall Effect water flow sensor support?
A: This flow sensor operates on DC 5V to 18V, making it compatible with common 5V and 12V power sources used in Arduino, Raspberry Pi, and standard irrigation or home automation setups.
Q: How does the Hall Effect flow sensor work?
A: Inside the sensor, a rotor spins as liquid flows through. A magnet on the rotor triggers the Hall effect element, generating a pulse signal proportional to the flow rate. Your microcontroller counts these pulses to calculate the volume or speed of liquid passing through.
Q: Is this water flow sensor waterproof?
A: Yes. The sensor features a top-to-bottom compression seal ring design, a waterproof rubber ring around the wiring, and inlet waterproof silicone reinforcement to guard against moisture ingress and leakage.
Q: What is the maximum flow rate and pressure this sensor handles?
A: This sensor measures liquid flow rates from 1 to 30 litres per minute and is rated for working pressures up to 1.75 MPa, suitable for most residential and light commercial water systems.
Q: Can I use this sensor in an aquarium or garden irrigation system?
A: Absolutely. This flow sensor is well-suited for garden drip irrigation controllers, aquarium water management, DIY dispensers, and any project where monitoring or controlling liquid flow is needed.