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Tunable Diode Laser Absorption Spectroscopy (TDLAS)
Tunable Diode Laser Absorption Spectroscopy (TDLAS) is a laser-based sensing technology used for precise, non-contact methane detection. It works by emitting a laser at a specific wavelength that is uniquely absorbed by methane (CH₄), allowing accurate measurement of gas concentration from a distance.
How TDLAS Works
Why TDLAS
Key Insights from Our Research
Warranty & Aftersales
The Purway UAV TDLAS Methane Leak Detector Model III is supported by a comprehensive two-year warranty from the date of purchase, covering key hardware components such as sensors, processing units, and internal electronics under normal operating conditions. This warranty also includes access to free software and firmware updates released during the coverage period, ensuring your system remains up to date and performing at its best. Please note that the warranty does not cover damage caused by accidents, misuse, unauthorized modifications, or external factors. For full details on coverage, exclusions, and service procedures, download the complete warranty policy.
Frequently Asked Questions
Delivery, Warranty & Aftersales-
A standard package typically includes:
Methane detector payload
Integrated camera system
Mounting bracket / gimbal solution
Data storage card
Charging / connection accessories
User manual
Protective carrying case (optional depending on package)
Online training and technical onboarding support
Final package contents may vary depending on drone platform and project requirements.
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The methane detector itself does not include internal lithium batteries.
It is powered through the drone payload interface or external regulated power connection depending on platform configuration. This helps simplify shipping and customs handling.
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We provide a 2-year warranty for the product.
During the warranty period, if any non-human-caused hardware issue occurs, we will provide repair service, replacement parts, or unit replacement depending on the case.
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We provide comprehensive aftersales support, including:
Free online training
Remote technical support
Installation guidance
Firmware update assistance
Data analysis guidance
Troubleshooting support
Replacement coordination during warranty period
Our team supports customers remotely for fast response and continuous operation.
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The product is shipped from Shenzhen, China, where our production and logistics center is located.
We support international delivery and can arrange shipping terms such as EXW, DDP, or other commercial terms depending on destination and customer requirements.
Product & Compatibility-
The UAV Laser CH₄ Leak Detector is designed for rapid airborne methane detection and leak localization. It is widely used for:
Natural gas pipeline inspection
Oil & gas facility leak surveys
Landfill methane emission monitoring
Industrial plant safety inspections
Emergency methane leak response
Routine environmental compliance surveys
Mounted on a drone, the system allows operators to inspect large or hard-to-reach areas safely and efficiently without ground access.
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Our turnkey version is fully compatible with DJI enterprise platforms—Matrice 300/350/400 RTK.
These platforms offer stable flight performance, long endurance, and seamless payload integration.
For customers using other drone platforms, custom integration solutions are also available.
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Yes. The detector can be integrated with selected third-party UAV platforms.
For non-DJI integration, customers usually need to provide:
Power supply specifications
Payload mounting structure
Communication interface details
Gimbal or fixed-mount requirements
Ground control / video transmission preferences
Our engineering team can assist with technical evaluation and integration support.
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For DJI turnkey systems, the detector is operated through our dedicated Captain APP, developed based on DJI SDK architecture. You can download it here.
Main functions include:
Real-time methane concentration display
Alarm indication
Camera video feed
Flight mission support
Data recording to SD card
CSV export for analysis
Report generation support
Customer familar with DJI Pilot 2 APP can also use it for the mission. For custom integrations, software solutions can be adapted according to project requirements.
Detection Performance-
The detector is specifically designed to measure methane (CH₄). It is optimized for methane leak detection in applications such as natural gas infrastructure, landfills, oil & gas facilities, and industrial sites.
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The detector uses laser absorption spectroscopy to remotely identify methane in the air. A laser beam is emitted toward the target area, and methane absorbs light at a specific wavelength. By analyzing the returned signal, the system calculates methane presence and concentration path values.
This method allows fast, non-contact, and highly selective methane detection during drone flight.
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TDLAS stands for Tunable Diode Laser Absorption Spectroscopy.
It is a highly accurate gas sensing technology widely used in industrial and environmental monitoring. TDLAS offers major advantages such as:
High sensitivity
Fast response time
Strong selectivity for methane
Long-distance remote sensing capability
Stable performance in outdoor environments
Data Reports & Operation Training-
The system can export inspection data in CSV format for further analysis and reporting.
Typical exported data may include:
Methane concentration (ppm·m)
GPS coordinates
Flight altitude
Timestamp
Signal quality / SNR
Distance to target
Device status information
This allows customers to review survey results, generate reports, or import data into GIS platforms.
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Yes. The system supports inspection report generation through the Captain APP, with both quick summaries and detailed reports available.
Users can:
Export methane detection data in CSV format
Review methane concentration, GPS location, altitude, and timestamps
Identify and mark potential leak points
Generate concise field reports directly in the APP
Export reports in Word or PDF format for easy sharing
For more advanced requirements, users can also use the exported data to create more detailed, customized reports using GIS software or internal reporting templates.
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Most users can learn the basic operation of the system within 1 to 2 hours through our online training session.
This typically includes:
Equipment installation and setup
Software operation
Live methane detection display
Basic flight survey workflow
Data export and review
Common precautions and troubleshooting
For experienced drone operators, the learning process is usually even faster. Advanced applications such as pipeline patrol planning or landfill survey optimization may require additional practice.
Need A Demo?
We regularly share industry insights and updates, along with downloadable user guides to help you get the most out of our solutions. If you need a 1-1 live demo session or direct technical support, don’t hesitate to send us a inquiry here. Whether you're exploring remote methane leak detection solutions or looking to upgrade your current inspection workflow, we’ll guide you every step of the way.