Purway UAV TDLAS Model III
5 ms ultra-fast burst response finds leaks before gas and revenue escape.
300 m stand-off range keeps crews safely outside fenced or hazardous zones.
True 4K video overlay pairs ppm·m data with crystal-clear visual evidence.
Plug-and-fly DJI X-Port mount snaps onto Matrice drones—no custom wiring.
IP54 rugged housing shrugs off dust, drizzle, and windy pad sites.
10 Hz real-time streaming feeds live dashboards or AI analytics in the cloud.
1. Performance
Parameter
Value
Response Time
100 ms (burst mode 5 ms)
Sampling Rate
10 Hz continuous
Detection Range
≤ 300 m open-path
Detection Principle
Tunable Diode Laser Absorption Spectroscopy (TDLAS)
Measurement Output
Path-integrated CH₄ (ppm·m) + HD video overlay
2. Optics & Imaging
Feature
Detail
Visible-Light Camera
4 K UHD — 3840 × 2160 @ 30 fps
Laser Class
Class I eye-safe IR
Data Fusion
Synchronized video + gas reading stamped with GPS/IMU metadata
3. Mechanical & Environmental
Feature
Detail
Ingress Protection
IP54 (dust- and splash-resistant)
Operating Temp
–10 °C to +50 °C
Weight (incl. gimbal)
≈ 800 g
Shock / Vibration
Designed for UAV flight loads and rough landings
4. Integration & Connectivity
Feature
Detail
Mounting
DJI X-Port included; brackets for 3rd-party UAVs
Power Input
12–16 V DC via drone payload rail
Telemetry
UART & Ethernet; compatible with DJI Pilot, M300, M30
API / SDK
Open JSON protocol for third-party GCS and cloud platforms
Leverage the Model III to turn any Matrice-class drone into a fast, quantified methane-inspection robot—reducing emissions, downtime, and compliance headaches in one flight.
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
