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Gravity Liquid Flow Sensor (G1/4)

Reference RBD-3237

Brand DFRobot

Gravity Liquid Flow Sensor (G1/4) based on electromagnetic principle for precise flow measurement.
Wide operating voltage range of 3.5V–24V with NPN pulse output for easy microcontroller integration.
Durable design with O-ring and silicone sealant for enhanced water resistance and reliability.
Supports liquid types with high concentration and low viscosity such as water, diesel, oil, milk, or detergent.
Compatible with Arduino and other microcontrollers through Gravity connector for plug-and-play wiring.
Ideal for industrial, laboratory, and DIY liquid measurement applications.

Description
Product Details

Description

The Gravity Liquid Flow Sensor (G1/4) is a high-precision flow sensor designed using the electromagnetic principle, ensuring accurate and stable flow detection for various liquid types. Featuring an O-ring rubber seal and silicone-sealed outlet, it provides excellent water resistance and durability even in demanding environments. The sensor supports a wide voltage range of 3.5V–24V and outputs a clean NPN pulse signal suitable for Arduino, STM32, or Raspberry Pi platforms. Its G1/4 threaded connectors allow easy installation in standard pipelines, while the anti-interference and anti-impact design ensures consistent performance over a long service life. This sensor can measure liquids with high concentration and low viscosity—such as water, diesel, engine oil, milk, paint, and detergent—making it perfect for industrial control systems, automation, and DIY monitoring projects. Featured By RoboticsBD.

Product Images are shown for illustrative purposes only and may differ from the actual product.

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Features:

High Accuracy Measurement: Electromagnetic sensing ensures stable and precise flow readings.
Wide Voltage Compatibility: Operates from 3.5V to 24V for flexible system integration.
Waterproof and Durable Design: O-ring and silicone sealant enhance water resistance and lifespan.
Standard G1/4 Thread Interface: Easy installation into existing liquid pipelines.
Arduino-Compatible Output: NPN pulse signal easily read by microcontrollers.
Strong Anti-Interference: Designed for reliability in electrically noisy environments.
Versatile Application: Suitable for a variety of low-viscosity liquids with no solid impurities.

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Applications:

Water Flow Monitoring Systems: Ideal for household or industrial flow measurement setups.
Liquid Dispensing Machines: Provides accurate feedback for dispensing control.
Industrial Process Control: Useful in automated systems requiring precise fluid regulation.
Agricultural Irrigation: Monitors water flow in irrigation pipelines.
DIY Projects and Research: Suitable for educational experiments and prototype development.

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General Specifications
Operating Voltage	DC 3.5–24V
Operating Current	≤10mA (at 5V)
Output Type	NPN Pulse Signal
Pipe Diameter	G1/4 Thread
Thread Outer Diameter	13mm
Thread Length	10mm
Water Pressure Resistance	≤1.0MPa
Insulation Resistance	＞100MΩ
Measurement Error	±1% (0.3–5L/min)
Output Pulse High Level	＞DC4.7V (Input 5V)
Output Pulse Low Level	＜DC0.5V (Input 5V)
Output Duty Ratio	50% ±10%
Flow-Pulse Correlation	1L = 540 pulses
Operating Temperature	-10°C to 70°C
Operating Humidity	35%–90% RH (No Condensing)
Storage Temperature	-25°C to +80°C
Storage Humidity	25%–95% RH
Dimension	80 × 47 × 30 mm
Shipment Weight	0.065 kg
Shipment Dimensions	9 × 6 × 4 cm

Please allow 5% measuring deviation due to manual measurement.

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Documentation:

Product wiki

Package Includes:

1 x Gravity Liquid Flow Sensor (G1/4)

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Product Details

Reference RBD-3237

In stock 1 Item

Specific References

EAN13: 3237

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