We Invent to Prevent.
We Invent to Prevent.
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ALMA G4 for Heavy Drones
A powerful laser methane detector designed for heavy duty UAVs, providing fast and accurate detection of methane leaks in extensive areas of elevated and underground gas pipelines.
UAV-mounted laser methane detector
The ALMA G4 is a remote laser methane detector designed for use with heavy UAVs. It can detect gas leaks up to 150 meters away, even when flying at speeds up to 100 km/h. Designed to inspect gas pipelines, compressor stations, methane storage tanks and other potential sources of leaks, the ALMA G4 is finely tuned to detect methane and has virtually no false positives. Its accuracy and reliability make it a valuable tool for preventing infrastructure damage and helping to reduce the financial and environmental costs associated with gas leaks.
Key features and advantages
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Versatile mount - Full automation
- Detects faster than conventional methods
- Automatic report after inspection
- Real time measurement and alarm system
- Insensitive to other gases
- Video recording of the laser position and surrounding pipeline area
- Pilot camera and monitor for laser control
- GPS tracking with navigation map system
- Post processing software
How ALMA G4 works
ALMA G4 utilizes TDLAS technology
TDLAS (Tunable Diode Laser Absorption Spectroscopy) is a technology that enables precise gas detection using a tunable diode laser. The laser emits a narrow beam of light at a wavelength that matches the absorption profile of the target gas. As the beam passes through the gas, some of the light is absorbed by its molecules. A sensor then captures the reflected light, and by analyzing how much was absorbed, the system determines the gas concentration. The ALMA G4 is designed to operate from heavy UAVs, making it possible to quickly survey large stretches of gas pipelines.
Operating principle of the laser methane detector
ALMA G4 features a laser scanning system where the laser beam follows a specific path, as shown in the figure. The black line represents the drone’s flight projected onto the ground, while the red line illustrates how the laser moves across the surface. Red dots indicate the beam’s position at 10-millisecond intervals. This scanning pattern is recorded during flight at an altitude of 100 meters and a speed of 100 km/h. Under these conditions, the system covers an area approximately 25 meters wide.
Where ALMA G4 applies
ALMA G4 is designed for a wide range of UAV-based inspections of methane infrastructure
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Underground Gas Storage
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Gas Distribution Station
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Gas Processing Plant
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Gas Compression Station
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Transportation Gas Pipeline
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Gas Storage
Where ALMA G4 applies
ALMA G4 is designed for a wide range of UAV-based inspections of methane infrastructure
Underground
Gas Storage
Gas Storage
Transportation Gas Pipeline
Gas Distribution
Station
Station
Gas Processing
Plant
Plant
Gas Compression
Station
Station
Gas
Storage
Storage
FAQ
Honest answers to important questions
No, each device is designed to detect a specific gas. This provides a 100% probability of leak detection of methane and not any other gas.
Laser radiation is completely safe, it corresponds to class 1.
Yes. It is an active device, it emits at a certain narrow wavelength, so it does not need additional signal sources.
No, there is no impact.
No. The detector contains a reference container with methane inside and calibration is performed at each start-up and during operation.
The detector does not need to be verified because it is not a measuring tool.
It works remotely. There is no direct contact with the hazardous environment.
Yes, because glass transmits the near infrared radiation well.
Our company specializes in methane detectors, but at your request we can supply a fully ready-to-use complex. Due to our partnership with UAV manufacturers, we can fully integrate the detector into the UAV design.
Contact us
You can order the equipment or ask questions here