Gravity: Factory Calibrated Electrochemical Hydrogen Sensor (0-1000ppm, I2C&UART)

The Gravity Factory Calibrated Electrochemical Hydrogen Sensor accurately detects ambient H2 concentrations across a range of 0 to 1000 ppm. Featuring a pre-calibrated probe and versatile outputs, it is ideal for makers, students, and engineers developing industrial safety or environmental monitoring systems.

Factory-calibrated electrochemical probe

The sensor uses an electrochemical probe featuring high sensitivity, strong anti-interference capabilities, and stable operation. It comes pre-calibrated from the factory and offers a service lifespan of over two years in air.

Flexible digital and analogue outputs

Supporting I2C, 0 to 3V UART, and analogue voltage outputs, this module adapts easily to diverse project architectures. It includes 32 configurable I2C addresses, enabling multiple modules to run on a shared communication bus.

Built-in temperature compensation and alarms

An integrated temperature compensation algorithm ensures dependable measurements across operating temperatures from -20 to 50 degrees Celsius. A built-in threshold alarm function further simplifies safety alerting setups.

Unified ecosystem and broad compatibility

Operating at 3.3V to 5.5V DC with current draw below 5mA, the adapter integrates seamlessly with Arduino, ESP32, and Raspberry Pi. It is part of a 12-sensor series that shares identical data formats for straightforward multi-gas monitoring.

Package contents

The kit includes one Gravity H2 signal conversion board, one electrochemical H2 sensor probe, and one 4-pin Gravity cable.

Downloads & documentation

• Product wiki (DFRobot)