DFRobot Gravity Laser Quantitative Methane Sensor (Lab-Grade CH4 Data + Excel Export) - Factory Calibrated TDLAS
DFRobot Gravity Laser Quantitative Methane Sensor (Lab-Grade CH4 Data + Excel Export) - Factory Calibrated TDLAS - Image 2
DFRobot Gravity Laser Quantitative Methane Sensor (Lab-Grade CH4 Data + Excel Export) - Factory Calibrated TDLAS - Image 3
SKU: SENS-0734
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DFRobot Gravity Laser Quantitative Methane Sensor (Lab-Grade CH4 Data + Excel Export) - Factory Calibrated TDLAS

₹9,369.00 (Inclusive of all taxes)
Out of Stock

The DFRobot Gravity Laser Quantitative Methane Sensor is a professional-grade TDLAS-based CHâ‚„ sensor delivering lab-grade data in %LEL. Factory calibrated for immediate use, it offers plug-and-play compatibility with Arduino, Raspberry Pi, and DAQ systems via its Gravity interface for research and environmental monitoring.

Features

  • Utilizes Tunable Diode Laser Absorption Spectroscopy (TDLAS) for highly selective methane detection.
  • Factory calibrated for accurate quantitative measurements in %LEL (3–100% range).
  • Zero cross-gas interference from COâ‚‚, ethanol, Hâ‚‚S, and similar gases.
  • Fast T90 response time of less than 15 seconds with a 15-second warm-up.
  • Long operational lifespan exceeding 10 years with minimal drift.

Out of stock

Description

The DFRobot Gravity Laser Quantitative Methane Sensor employs advanced Tunable Diode Laser Absorption Spectroscopy (TDLAS) technology, a non-dispersive infrared (NDIR) principle, to provide highly selective and quantitative measurements of methane concentration. This method ensures the sensor is immune to interference from other common gases, delivering reliable, publication-ready data directly in %LEL (Lower Explosive Limit) for safety and environmental analysis.

Designed for research and industrial applications, the sensor is factory calibrated, eliminating the need for user calibration and ensuring immediate deployment. Its robust construction and stable laser source guarantee excellent long-term repeatability and a lifespan exceeding 10 years. The integrated Gravity interface allows for seamless integration with microcontrollers like Arduino and single-board computers like Raspberry Pi, as well as laboratory DAQ systems via the SCI DAQ Module for one-click data export to Excel and MATLAB.

Key Features

  • Research-Grade TDLAS Technology: Delivers precise, quantitative methane concentration data with high selectivity.
  • Factory Calibration: Ready for immediate use with guaranteed accuracy, eliminating complex setup procedures.
  • Zero Cross-Gas Interference: Unaffected by the presence of COâ‚‚, ethanol, Hâ‚‚S, and other common gases.
  • Fast Response & Warm-Up: Achieves T90 in under 15 seconds and is operational after a 15-second warm-up period.
  • Long-Term Stability: Engineered for minimal drift and an operational lifespan greater than 10 years.
  • Direct %LEL Output: Provides concentration data directly in the Lower Explosive Limit scale for safety-critical applications.
  • Gravity Interface Compatibility: Plug-and-play connectivity with a wide ecosystem of DFRobot and compatible microcontroller boards.
  • Data Export Capability: Compatible with the SCI DAQ Module for easy export of logged data to Excel and MATLAB formats.

Applications

  • Quantitative methane monitoring in academic and environmental research laboratories.
  • Safety and leak detection in biogas production facilities and anaerobic digesters.
  • Emission monitoring and process control in wastewater treatment plants.
  • Landfill gas composition analysis and environmental impact studies.
  • Fermentation process monitoring in biofuel and agricultural research.

Technical Specifications

Item TypeLaser Methane Gas Sensor
Detection GasMethane (CHâ‚„)
Sensing TechnologyTunable Diode Laser Absorption Spectroscopy (TDLAS)
Detection Range3–100% LEL
Resolution0.1% LEL
Accuracy (5–20% LEL, 25°C)±2% LEL
Accuracy (20–75% LEL, 25°C)±3% LEL
Accuracy (75–100% LEL, 25°C)±5% LEL
Response Time (T90)< 15 seconds
Warm-Up Time15 seconds
Sensor Lifespan> 10 years
Output InterfaceGravity Analog (4-pin)
Cross-Gas ImmunityCOâ‚‚, Ethanol, Hâ‚‚S

Frequently Asked Questions

What is the output signal and how do I connect this sensor to an Arduino?

The sensor outputs an analog voltage signal corresponding to the methane concentration in %LEL via its standard 4-pin Gravity interface. Simply connect the cable to a compatible Gravity shield or directly to your Arduino's analog input pin, VCC (5V), and GND. No additional signal conditioning is required.

Does this sensor require calibration before use, and how is its accuracy defined?

No, the sensor is factory calibrated and ready for immediate use. Its accuracy is specified as ±2% LEL within the 5–20% LEL range at 25°C, ±3% LEL from 20–75% LEL, and ±5% LEL from 75–100% LEL. This graded accuracy reflects the performance characteristics of TDLAS technology across its full measurement range.

What gases does this sensor specifically NOT react to?

The TDLAS technology is highly selective to methane's specific infrared absorption line. It exhibits zero cross-sensitivity to common interfering gases such as carbon dioxide (COâ‚‚), ethanol, hydrogen sulfide (Hâ‚‚S), and many other volatile organic compounds, ensuring measurements are specific to CHâ‚„ concentration.

Can I log data directly to a computer without writing code?

Yes, by using the DFRobot SCI DAQ Module (sold separately), you can connect the sensor to a PC via USB. The accompanying software allows for one-click data logging and export directly to Excel (.xlsx) or MATLAB-ready (.mat) file formats without any programming.

What is the expected operational lifespan and environmental operating range?

The sensor is designed for a long operational lifespan exceeding 10 years with minimal performance drift. While specific temperature and humidity operating ranges are not provided in the core specs, TDLAS sensors are generally suitable for standard indoor laboratory and industrial environments. For harsh conditions, consult the manufacturer's datasheet for detailed environmental specifications.

Package Includes

  • 1 x DFRobot Gravity Factory Calibrated Laser Quantitative Methane Sensor
  • 1 x Gravity 4-pin sensor cable

Additional Information

Weight 0.044 kg
Dimensions 14 × 7 × 3 cm

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