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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

  • 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 utilize 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
  • Underground Gas Storage

  • Gas Distribution Station

  • Gas Processing Plant

  • Gas Compression Station

  • Transportation Gas Pipeline

  • Gas Storage

Where ALMA G4 applies

ALMA G4 is designed for a wide range of UAV-based inspections of methane infrastructure
Underground
Gas Storage
Transportation Gas Pipeline
Gas Distribution
Station
Gas Processing
Plant
Gas Compression
Station
Gas
Storage

FAQ

Honest answers to important questions

Contact us

You can order the equipment or ask questions here