DFRobot Gravity: Factory Calibrated Laser Quantitative Methane Sensor for Research (Lab-Grade CH4 Data + No Code Excel Export)

The DFRobot Gravity Factory Calibrated Laser Quantitative Methane Sensor is a professional-grade CH₄ sensing solution designed for researchers, environmental engineers, laboratory professionals, and academic institutions requiring accurate and quantitative methane measurements. Unlike conventional MQ-series gas sensors that provide only approximate readings, this advanced sensor utilizes Tunable Diode Laser Absorption Spectroscopy (TDLAS) technology to deliver precise methane concentration data in %LEL (Lower Explosive Limit).

Factory calibrated for immediate deployment, the sensor eliminates the need for complex calibration procedures and provides reliable, publication-ready data with excellent repeatability and long-term stability. Its zero cross-gas interference capability ensures accurate methane measurements even in environments containing CO₂, ethanol, H₂S, or other gases commonly found in fermentation systems, wastewater treatment plants, biogas facilities, and environmental research projects.

Features:

1. Advanced TDLAS laser technology for highly selective methane detection
2. Factory calibrated for accurate quantitative CH₄ measurements
3. Outputs methane concentration directly in %LEL for research-grade analysis
4. No cross-gas interference from CO₂, ethanol, H₂S, and similar gases
5. One-click data export to Excel and MATLAB-ready formats using SCI DAQ Module
6. Plug-and-play compatibility with Arduino, Raspberry Pi, and laboratory DAQ systems
7. Long operational lifespan exceeding 10 years with minimal drift

Specification:

1. Item Type : Laser Methane Gas Sensor
2. Detection Gas : Methane (CH₄)
3. Sensing Technology : Tunable Diode Laser Absorption Spectroscopy (TDLAS)
4. Detection Range : 3–100% LEL
5. Resolution : 0.1% LEL
6. Accuracy : ±2% LEL (@5–20% LEL, 25°C)
7. Accuracy : ±3% LEL (@20–75% LEL, 25°C)
8. Accuracy : ±5% LEL (@75–100% LEL, 25°C)
9. Response Time : T90 < 15 Seconds
10. Warm-Up Time : 15 Seconds
11. Communication Interface : I2C, UART
12. Operating Temperature : -13°C to +58°C
13. Operating Humidity : 0–95% RH (Non-Condensing)
14. Operating Pressure : 80–115 kPa
15. Calibration : Factory Calibrated
16. Data Logging Support : Excel & MATLAB Export via SCI DAQ Module
17. Compatibility : Arduino, Raspberry Pi, DAQ Systems
18. Sensor Lifespan : More Than 10 Years
19. Cross-Gas Interference : None
20. Output Data Format : Quantitative %LEL Methane Concentration
21. Installation Type : Plug-and-Play
22. Diamentions : 84 x 26 x 17 mm
23. Weight : 29 g

Pacakge Includes:

1 x DFRobot Gravity: Factory Calibrated Laser Quantitative Methane Sensor for Research (Lab-Grade CH4 Data + No Code Excel Export)

1 x Gravity 4 pin sensor cable