Purway UAV TDLAS
Advanced TDLAS Technology: Utilizes Tunable Diode Laser Absorption Spectroscopy for precise methane detection.
300-Meter Range: Upgraded to detect methane leaks within a 300-meter radius, with a rapid 10ms response time.
High-Precision Measurement: Offers ±10% accuracy in the 100~50000 ppm*m range, ensuring reliable readings.
Intelligent Gimbal Stabilization: Features YAW, PITCH, and ROLL stabilization for accurate and steady data collection.
UAV Compatibility: Designed to seamlessly integrate with DJI Matrice 300 series or similar drones.
Safety-Centric Design: Equipped with Class I infrared and Class 3R green indicator lasers for eye safety.
The Purway CH4 Laser Methane Leak Detector Model II is a state-of-the-art UAV payload, expertly engineered for detecting methane gas leaks. It combines advanced laser technology with real-time data feedback and high-definition visualization. The CH-4 is tailored for the safe maintenance of natural gas pipelines, featuring intelligent gimbal stabilization to provide precise, visually-enhanced methane inspections. This device is an essential tool for infrastructure companies concerned with gas transmission safety, streamlining the traditionally tedious process of pipeline tightness control.
Specifications Overview:
Sensor Accuracy: ±10% (100~50000 ppm*m)
Response Speed: 10ms
Telemetry Distance: Up to 300 meters
Gimbal Stabilization: YAW+PITCH+ROLL
Video Transmission: 1080P 30
Housing: Aluminum alloy
Instrument Weight: 766g
Protection Level: IP54
Laser Safety Level: Class I and 3R
The Purway UAV Laser Methane Leak Detector Model II is not just a tool but a comprehensive solution for ensuring the integrity and safety of natural gas infrastructure.
Comparison table of the three major methane detection technologies used in field inspections:
Feature / Metric
OGI (Optical Gas Imaging)
TDLAS (Laser Absorption)
Gas Sniffers (PID, FID, etc.)
Detection
Infrared plume image
Methane-specific laser absorption
Chemical/electrical gas sensing
Output
Visual
Quantitative (ppm / ppm-m)
Quantitative (ppm)
Sensitivity
Moderate (<100 ppm)
High (ppb–ppm)
High (varies by sensor)
Methane Selectivity
Moderate (others detected too)
High (methane-tuned)
Variable
Quantification
No
Yes (with path length)
Yes
Range / Coverage
Moderate to wide
Long (10–250 m)
Point only
Real-Time
Yes
Yes
Yes
Conditions
Needs thermal contrast
Stable in most environments
Affected by weather
Automation
High (UAVs, robots)
High (UAVs, fixed units)
Low–Medium (handheld)
Remote Use
Excellent (standoff)
Excellent (remote possible)
Poor (manual, close-up)
Speed
Fast (area scan)
Fast (drones, long path)
Slow (point by point)
Cost
High ($80K–150K)
Medium ($10K–60K)
Low–Medium ($2K–20K)
Best Use
Visual leaks, LDAR, complex sites
Quantifying, monitoring, drones
Localized, indoor leaks
Regulatory Use
Accepted (OGI/Method 21 alt.)
Gaining approval for quantification
Standard Method 21
