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Hall Effect Water Flow Sensor DC 5-18V | 1-30L/min
Hall Effect Water Flow Sensor DC 5-18V | 1-30L/min
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Hall Effect Water Flow Sensor — Accurate, Durable & Easy to Install
Monitor and control liquid flow with precision using this compact Hall Effect Water Flow Sensor. Designed for a wide range of DIY plumbing, electronics, and water management projects, this sensor delivers reliable pulse output across a broad operating voltage range (DC 5V–18V) and handles flow rates from 1 to 30 L/min at pressures up to 1.75 MPa. Made in Mainland China.
Key Features
- Wide Voltage Compatibility: Operates on DC 5V–18V, making it compatible with Arduino, Raspberry Pi, and most microcontroller platforms.
- Wear-Resistant Impeller: The impeller is inlaid with stainless steel beads for long-lasting, low-friction performance.
- Leak-Proof Seal Design: The seal ring structure applies top-to-bottom force to prevent water leakage, ensuring a reliable, drip-free connection.
- Waterproof Hall Element: Imported Hall element with a waterproof seal rubber ring and inlet waterproof silicone for enhanced moisture protection.
- Simple 3-Wire Connection: Red (VCC/+), Yellow (Signal OUT), Black (GND/−) — no soldering expertise required.
- Versatile Applications: Ideal for water heaters, water vending machines, water cooling systems, flow measurement devices, credit card dispensing machines, and DIY projects.
- 1/2" External Thread: Standard fitting for easy integration into existing plumbing setups.
Technical Specifications
| Working Voltage | DC 5V – 18V |
| Rated Voltage (Min) | DC 4.5V |
| Max Operating Current | 15 mA (at DC 5V) |
| Load Capacity | ≤ 10 mA (at DC 5V) |
| Flow Rate Range | 1 – 30 L/min |
| Max Water Pressure | 1.75 MPa |
| Operating Temperature | -25°C to +80°C |
| Humidity Range | 35% – 90% RH (no frost) |
| External Thread | 1/2" |
| Outer Diameter | 20 mm |
| Intake Diameter | 9 mm |
| Outlet Diameter | 12 mm |
| Material | Plastic |
| Package Contents | 1 × Hall Effect Water Flow Sensor |
Wiring Guide
- Red wire (VCC): Connect to the positive power supply terminal.
- Yellow wire (Signal OUT): Connect to your microcontroller's digital input pin.
- Black wire (GND): Connect to the negative/ground terminal.
Usage Precautions
- Do not expose to severe impact, dropping, or chemical erosion.
- Do not allow the medium temperature to exceed 80°C during continuous operation.
- Keep water pressure within the rated 1.75 MPa limit.
Related Products You May Like
For guidance on safe plumbing practices and DIY water system standards, visit the U.S. Consumer Product Safety Commission (CPSC) for product safety information.
Frequently Asked Questions
Q: What voltage does this Hall effect water flow sensor support?
A: This water flow sensor operates on a DC voltage range of 5V to 18V, with a minimum rated working voltage of DC 4.5V. It is compatible with Arduino (5V), Raspberry Pi, and most standard microcontroller boards operating in this range.
Q: What is the maximum flow rate and pressure this sensor can handle?
A: The sensor supports a flow rate range of 1 to 30 L/min and can withstand water pressure up to 1.75 MPa. It is suitable for household water lines and most small-to-medium plumbing or cooling system applications.
Q: Is this water flow sensor compatible with standard plumbing fittings?
A: Yes. The sensor features a standard 1/2" external thread, making it easy to integrate into most existing plumbing setups, water heater lines, cooling systems, and liquid flow measurement devices without special adapters.
Q: How do I wire this sensor to my microcontroller?
A: Wiring is straightforward with three color-coded wires: connect the Red wire to your positive power supply (VCC), the Black wire to ground (GND), and the Yellow wire to a digital input pin on your microcontroller to read the pulse signal output corresponding to flow rate.
