Fermion: MEMS H2 sensor employs state-of-the-art micro-electromechanical system (MEMS) technology, endowing the sensor with compact dimensions (13x13x2.5mm), low power consumption (＜20mA), minimal heat generation, short preheating time, and swift response recovery. The sensor can measure the concentration of hydrogen gas qualitatively. It is suitable for the hydrogen leakage alarm and other application scenarios.

The MEMS series currently encompasses 11 different types of gas sensors (HCHO, CO, CH4, VOC, NH3, H2S, EtOH, Smoke, Odor, H2, NO2), which can be combined as per specific requirements.

Please note: This sensor is capable of only qualitative measurements. For quantitative measurements, kindly consider purchasing the Gravity: Factory Calibrated Electrochemical Gas Sensor Series.

Figure: Wiring Diagram of Fermion: MEMS H2 Sensor and Arduino UNO

Precautions for use

• Kindly remove the protective film before usage.
  
• To prevent exposure to volatile silicon compounds vapors (such as silicone adhesive, hair gel, silicone rubber, or other locations where volatile silicon compounds are present).
• Avoid exposure to high concentrations of corrosive gases (such as H2S, SOX, Cl2, HCl, etc.).
• Prevent contamination from alkalis, alkali metal salts, and halogens.
• Refrain from prolonged exposure to extreme environments (such as high temperatures, high humidity, high pollution).
• Avoid contact with water, condensation, and freezing.
• Minimize excessive vibration, impact, and dropping.
• Please refrain from employing this module in systems that involve personal safety concerns.
• For extended periods of non-usage, it is advisable to preheat the module for at least 24 hours.

Features:

• Compact size, measuring only 13*13*2.5mm
• Low power consumption, operating current ＜20mA
• High sensitivity and rapid response recovery
• Advanced MEMS technology

Specifications:

• Gas detected: Hydrogen (H2)
• Detection range: 0.1-1000ppm
• Operating voltage: 3.3-5V
• Operating current: ＜20mA
• Output signal: Analog voltage
• Sensitivity: R0(in air)/Rs(in 200ppm H2) ≥ 5
• Operating temperature: -10-50℃
• Operating humidity: 15-90%RH (non-condensing)
• Lifespan: ≥5 years (in air)
• Dimension：13×13 x 2.5mm/0.0.51×0.51x0.1"

Applications:

• Air quality monitoring: measures the level of H2 and other pollutants in the ambient air.
• Automotive emission control: monitors the H2 emission from fuel cell vehicles and adjusts the fuel cell operation to optimize the performance and efficiency.
• Industrial safety: detects the leakage or exposure of H2 and other flammable gases in industrial processes or workplaces.

PROJECTS

Project: Building an Electronic Nose with MEMS Gas Detection Sensor Breakout Series and Edge Impulse Platform

Introduction:

In this project, I developed an electronic nose using DFRobot mems series gas sensors and the Edge Impulse platform, which is capable of identifying the scents of beverages and fruits.

Documentation:

• Product wiki

Package Includes:

• 1 x Fermion: MEMS H2 Sensor (breakout)
• 1 x 2.54mm pitch header pin