DFROBOT Gravity Non-contact Capacitive Flexible Liquid Level Sensor

The DFROBOT Gravity Non-contact Capacitive Flexible Liquid Level Sensor provides an innovative, non-invasive solution for monitoring liquid levels. It uses a flexible substrate with a light and thin design, allowing it to conform to various container surfaces. On the back, temperature-resistant and waterproof 3M adhesive tape is supplied, enabling easy attachment to the outside of any non-conductive container with a wall thickness of less than 5mm. This eliminates the need for drilling holes or direct contact with the liquid, making it ideal for sensitive or corrosive fluids.

The sensor outputs a simple digital high or low signal, with a low level indicating liquid detection and a high level indicating no liquid. It features a convenient 3-pin DuPont connector for straightforward integration with microcontrollers and development boards like Arduino.

Key Features & Applications

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

Technical Specifications

• Light & Thin Design: Flexible and easy to mount on curved or flat surfaces.
• Mounting: Attaches via 3M adhesive tape to non-conductive containers.
• Working Voltage: 2.5 to 5.5 VDC.
• Working Current: 290 µA at 5V, 235 µA at 3V (low power consumption).
• Output Signal: Digital; Low when liquid is detected, High when no liquid is detected.
• Thickness Range (TR): For containers with walls up to 5mm thick.
• Hysteresis: ±0.25% FS for stable readings.
• Protection Level: Rated IP62, offering protection against dust and dripping water.
• Operating Temperature Range: -30°C to 85°C, suitable for harsh or wide-