DFRobot
Gravity HF Gas Sensor (Calibrated) - I2C/UART/Analogue
· MPN: SEN0475
Measure hydrogen fluoride concentration with a factory-calibrated electrochemical probe that supports analogue, I2C and UART output modes. It is designed for...
Measure hydrogen fluoride concentration with a factory-calibrated electrochemical probe that supports analogue, I2C and UART output modes. It is designed for quickly building an HF concentration detector for industrial and environmental protection applications.
The sensor includes integrated temperature compensation, a threshold alarm function and 32 modifiable I2C addresses, making it flexible for multi-sensor projects. It works with common controllers such as Arduino, ESP32 and Raspberry Pi, and uses DFRobot’s easy-to-connect Gravity interface.
DFRobot provides sample code for getting started, and this kit includes the Gravity HF signal conversion board, HF sensor probe and a Gravity 4-pin cable. It is part of DFRobot’s compatible multi-gas sensor series, which shares the same usage method and data format across supported gases.
Features:
- Strong anti-interference ability
- High stability
- High sensitivity
Specifications:
- Detection Gas: Hydrogen fluoride (HF)
- Detection range: 0~10ppm
- Working Voltage: 3.3～5.5V DC
- Working Current: ＜5mA
- Output Signal: I2C, UART (0~3V), analog voltage
- Working Temperature: -20～50℃
- Working Humidity: 15～90%RH (non-condensing)
- Storage Temperature: -20～50℃
- Storage Humidity: 15～90%RH (non-condensing)
- Lifespan: >2 years (in the air)
- Adapter Plate Size: 37*32mm
- Compatibility: Arduino, ESP32, Raspberry pi
Suitable for industrial hydrogen fluoride detection and environmental protection devices where HF monitoring is required.
Jargon buster
Plain-language definitions for the technical terms used above.
- ESP32
- ESP32 is a family of microcontroller modules with built-in wireless features such as Bluetooth and WiFi. Knowing this product uses an ESP32-based module helps explain how it provides wireless serial communication and firmware update features.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- Temperature compensation
- Temperature compensation means the sensor adjusts its readings to reduce errors caused by changes in water temperature. This matters for field monitoring because ponds, rivers, and tanks can vary in temperature throughout the day and across seasons.
- UART
- UART is a simple serial connection that sends data over separate transmit and receive wires, often labelled TX and RX. It matters because this module is designed to replace a wired UART cable with a wireless link while keeping the same serial data format.
Find this product in
Supplier page — dfrobot.com
Supplier Description · 179.8 KB · Click any page to view full size
