Gravity HF Hydrogen Fluoride Sensor I2C and UART

The Gravity HF Hydrogen Fluoride Sensor from DFRobot is an advanced, factory-calibrated sensor designed for accurate measurement of hydrogen fluoride (HF) in the air. With a measuring range of 0 to 10 ppm and support for analog, I2C, and UART output modes, this sensor provides a comprehensive solution for a variety of applications, from industrial monitoring to environmental protection projects. The electrochemical measurement method ensures high accuracy, stability, and excellent resistance to interference. Integrated temperature compensation and threshold alarm function further increase the reliability of the sensor. Thanks to compatibility with popular microcontrollers such as Arduino, ESP32 and Raspberry Pi, the sensor can be easily integrated into existing systems.

Features:

• High accuracy and sensitivity for HF detection.
• Supports analog, I2C, and UART output modes.
• Robust construction with a lifespan of over two years.
• Strong anti-interference ability due to the electrochemical principle of measurement.
• Compatible with Arduino, ESP32, and Raspberry Pi.

Application examples:

• Monitoring of hydrogen fluoride concentrations in the semiconductor industry.
• Use in the chemical industry for monitoring of production processes.
• Environmental monitoring for detection of HF emissions.
• Integration into security systems for early detection of dangerous gases.

Documentation:

• DFRobot Wiki

Technical specifications:

• Manufacturer: DFRobot 
• Manufacturer SKU: SEN0475
• Detection gas: Hydrogen fluoride (HF)
• Measuring range: 0~10ppm
• Operating voltage: 3.3~5.5V DC
• Operating current: ＜5mA
• Output signal: I2C, UART (0~3V), analog voltage
• Operating temperature: -20~50℃
• Operating humidity: 15~90%RH (non-condensing)
• Lifespan: >2 years (in air)
• Compatibility: Arduino, ESP32, Raspberry Pi
• Dimensions: 37 x 32 x 30mm
• Weight: 81.9g

Package includes:

• 1x Gravity HF Hydrogen Fluoride Sensor I2C and UART
• 1x Gravity IIC/UART Sensor Cable