DFRobot Gravity Non-contact Capacitive Flexible Liquid Level Sensor

The DFRobot Gravity Non-contact Capacitive Flexible Liquid Level Sensor is a non-invasive digital liquid level sensor that attaches to the outside of non-conductive containers with walls up to 5 mm thick.

The sensor uses a light and thin flexible substrate that conforms to curved or flat container surfaces. Temperature-resistant and waterproof 3M adhesive tape is supplied on the back for mounting, so no holes need to be drilled and the sensor does not contact the liquid. This makes it suitable for sensitive or corrosive fluids.

Key Features

• Outputs a digital high or low signal: low when liquid is detected, high when no liquid is detected
• Non-contact capacitive sensing through non-conductive container walls
• 3-pin DuPont connector for integration with microcontrollers and development boards such as Arduino
• Low power consumption with a working current of 290 µA at 5 V and 235 µA at 3 V
• Rated IP62 for protection against dust and dripping water

Applications

Designed for versatility, the sensor suits a wide range of level monitoring tasks. Its non-contact design prevents contamination and simplifies maintenance. It is intended for DIY projects, educational experiments, and commercial applications where reliable, non-invasive sensing is required.

Specifications

• Working voltage: 2.5 to 5.5 VDC
• Hysteresis: ±0.25% FS
• Thickness range: up to 5 mm container walls
• Operating temperature range: -30 °C to 85 °C

Choose the DFRobot Gravity Non-contact Capacitive Flexible Liquid Level Sensor for a practical, non-invasive way to monitor liquid levels in a wide range of containers.