SKU: SENS-1384
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DFRobot Non-contact Capacitive Liquid Level Sensor for Container OD > 11mm - Digital Switch Output

₹1,489.00 (Inclusive of all taxes)
Out of Stock

The DFRobot Non-contact Capacitive Liquid Level Sensor provides a reliable, non-invasive method for detecting liquid levels through non-metallic container walls. It outputs a digital switch signal, making it directly compatible with Arduino, Raspberry Pi, and other 5V/12V microcontroller platforms for tank monitoring and fluid control applications.

Features

  • Non-contact capacitive sensing through plastic, glass, or ceramic walls (OD > 11mm)
  • Digital switch output for direct connection to Arduino and other microcontrollers
  • Adjustable sensitivity and status indicator for real-time feedback
  • IP65-rated ABS housing for durable operation in humid environments
  • Wide operating temperature range from -5°C to 105°C

Out of stock

Description

This sensor operates on a capacitive sensing principle, detecting changes in dielectric constant caused by the presence of liquid inside a non-metallic pipe or container. Its pure electronic, non-mechanical structure ensures stable performance and a long operational life, free from wear and tear. The integrated circuitry includes special filtering for power frequency and common-mode interference, providing high sensitivity and strong immunity to external electromagnetic noise.

Designed for industrial and DIY applications, it can penetrate container walls up to 20mm thick and is unaffected by corrosive liquids, strong acids, alkalis, or impurities. The sensor provides accurate detection even for boiling water, with a typical liquid level error of ±1.5mm. It comes with a 4-pin adaptor for straightforward digital signal collection and system integration.

Key Features

  • Non-contact capacitive detection through non-metallic materials (plastic, glass, ceramic)
  • High-stability electronic design with no moving parts for long-term reliability
  • Onboard sensitivity adjustment potentiometer for fine-tuning detection threshold
  • Integrated status LED provides immediate visual feedback of liquid presence
  • Robust IP65-rated ABS plastic housing protects against dust and water jets
  • Wide 5V to 12V DC input voltage range for flexible system integration
  • Immune to corrosive fluids and capable of detecting boiling water levels
  • Fast 500ms response time for real-time level monitoring and control

Applications

  • Water level monitoring in non-metallic storage tanks and reservoirs
  • Liquid presence detection in beverage dispensers and coffee machines
  • Leak detection and fluid level control in laboratory equipment
  • Automated irrigation system tank level monitoring
  • Boiler and hot water system level safety cut-off

Technical Specifications

Model NameLiquid Level Sensor
BrandDFRobot
Sensing PrincipleNon-contact Capacitive
Power Supply Voltage5V to 12V DC
Output TypeDigital Switch (Open Collector)
Response Time500 ms
Operating Temperature-5°C to 105°C
Liquid Level Error±1.5 mm
Minimum Container Outer Diameter11 mm
Maximum Wall Thickness20 mm
Housing MaterialABS Plastic
Ingress Protection (IP)IP65
Connector4-pin Adaptor

Frequently Asked Questions

What is the minimum container outer diameter this sensor can work with?

The sensor is designed to detect liquid through non-metallic containers with an outer diameter greater than 11mm. For optimal sensitivity and reliable detection, ensure the container wall is non-metallic (e.g., plastic, glass, ceramic) and does not exceed 20mm in thickness.

How do I connect this sensor to an Arduino or microcontroller?

The sensor includes a 4-pin adaptor. Connect the VCC pin to a 5V or 12V DC power source (within the 5-12V range), GND to ground, and the digital output signal pin (typically labeled OUT or SIG) to any digital input pin on your Arduino. The sensor outputs a digital high/low signal indicating the presence or absence of liquid.

Can this sensor detect liquids inside metal containers?

No, this is a capacitive sensor and cannot penetrate conductive materials like metal. It is specifically designed for use with non-metallic containers such as those made from ABS, PVC, glass, or ceramic. The electric field used for detection is blocked by metal walls.

What is the purpose of the adjustable sensitivity on the sensor?

The onboard potentiometer allows you to fine-tune the sensor's detection threshold. This is crucial for adapting to different wall thicknesses, liquid types, or container materials to prevent false triggers and ensure reliable operation in your specific application.

Is this sensor suitable for use with corrosive or boiling liquids?

Yes. Since it is a non-contact sensor mounted on the outside of the container, it is completely isolated from the fluid inside. This makes it safe for use with corrosive acids, alkalis, and even boiling water, as the sensing element never comes into direct contact with the liquid.

Package Includes

  • 1 x DFRobot Non-contact Capacitive Liquid Level Sensor

Additional Information

Weight 0.035 kg
Dimensions 12 × 9 × 2 cm