BLV GasVision TD1 — OGI + TDLAS System for Drone-Based Methane/VOC Leak Detection

The BLV GasVision TD1 is a next-generation drone-based methane and VOC leak detection system, developed by BLV Tech and distributed by DroneBase as an official reseller. The payload combines two gas detection technologies in a single compact body: Optical Gas Imaging (OGI) and Tunable Diode Laser Absorption Spectroscopy (TDLAS). This dual-technology configuration allows the operator to “see the gas and measure the gas” in the same mission: the OGI thermal image visually highlights the escaping gas plume, while the TDLAS sensor quantifies in real time the methane (CH₄) concentration in ppm·m with ±10% accuracy (in the 100~50000 ppm·m range). The OGI sensor uses a HOT MWIR (High Operating Temperature Mid-Wave InfraRed) detector with 320×256 array format, 30 μm pixel pitch, 50 mm F/1.2 optics, response band 3.2-3.4 μm — the spectral window that allows visualizing CH₄ and over 20 VOC family gases (ethane, butane, propane, octane, pentane, heptane, hexane, ethylene, propylene, benzene, toluene, ethylbenzene, xylene, ethanol, methanol, isoprene, MEK, MIBK, 1-pentene and others). The sensor reaches thermal sensitivity NETD ≤12 mK @25°C, 50 Hz frame rate and 8× digital zoom, with 8 selectable color palettes to optimize visualization according to scenario. The TDLAS sensor employs a Class 3R infrared laser at 1.65 μm with <25 mW power, sensitivity of 5 ppm·m, 20 ms response time and measurement range from 1 to 99,999 ppm·m. The telemetry distance reaches up to 70 m under optimal conditions (30% diffuse reflectivity target, 10,000 ppm·m CH₄ concentration, static measurement). The payload also integrates a laser ranging up to 1200 m, useful for precise geolocation of measurement points and georeferenced mapping of leaks. Integration with DJI Matrice 400 is native via X-Port 3-axis gimbal stabilized on pitch, roll and yaw, with software support for DJI Pilot, BLV CH4 App and CH Cloud for the complete workflow of collection, analysis and reporting. The system weighs 1900 g with gimbal, dimensions 189.2 × 168 × 213.6 mm, with IP55 protection rating and operating temperature from -20 °C to +50 °C. The GasVision TD1 is designed in compliance with EU Regulation 2024/1787 on methane emissions (LDAR and inspection documentation), with the OGMP 2.0 Oil & Gas Methane Partnership framework for emissions reporting, and with GDPR for secure data management. Main applications: petroleum refining and processing, industrial chemical parks, hydrocarbon storage and transportation, landfills, offshore, wastewater treatment. Distributed by DroneBase, DJI Gold 5 Dealer ISO 9001:2015 certified, with dedicated technical support, operational training, ENAC/EASA consulting for operational authorizations and integration with existing fleet.