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Aircraft laser detectors for operational inspection of extended aboveground and underground gas pipelines for methane leaks
ALMA (Aerial Laser Methane Assessment) is designed for operational diagnostics of extended gas transmission and gas distribution facilities for leaks. Is used for exploration of gas fields. Can be installed on a helicopter or light-engine aircraft.

useful for
Gas Storage
Transportation Gas Pipeline
Gas Distribution
Gas Processing
Gas Compression
Transportation Gas Pipeline

Underground Gas Storage

Gas Distribution Station

Gas Compression Station

Gas Processing Plant

Gas Storage

ALMA advantages
New airborne inspection capabilities
Works where land inspection is impossible
With ALMA, you can thoroughly survey a section of a gas pipeline or other extended gas infrastructure facility in places, access to which from the ground is impossible or restricted.
Faster than
on the ground
ALMA diagnostics is carries out at an average speed of 62 mph (100 km/h) allowing to survey gas pipeline sections with a length of up to 373 miles (600 kilometers) per day.
Cheaper than on the ground
Improved efficiency of remote ALMA inspection compared to conventional land-based gas pipeline diagnostic methods makes this process as economical as possible.
How It Works?
ALMA is a system of airborne surveying of natural gas pipelines and storage facilities. The detector operation principle is based on diode-laser spectroscopy, which provides high reliability, accuracy and selectivity.

The device is fully automated and can continuously work without an operator, while storing the results in computer memory. The detector includes a GPS system that determines the flight route coordinates and leak points. Upon leak detection, the operator receives a light and sound signal, and the monitor displays a photo and a Google map of the leak site.

The detectors are designed for operation in temperate and cold climates; they comprise an optical unit and an electronics case.
any type of aircraft
for Bell 206
Accurate, fast, compact
ALMA G4 is the latest generation of remote airborne laser spectroscopy-based detectors.

ALMA G4 features
  • Real-time measurements;
  • Insensitive to other gases (water vapors, propane, etc.);
  • Detection distance is increased up to 984 feet (300 meters);
  • Advanced capabilities of aircraft installation;
  • GPS tracking using a map navigation system;
  • Post-processing program with automatic report generation;
  • Compact design.
Time-tested quality
Reliable and low-maintenance remote methane detectors. Designed to work in temperate and cold climates.

ALMA G2 features
  • Standalone operation (results are saved to computer memory);
  • High gas selectivity;
  • STC and FAA Certificates of Conformity;
  • Operating voltage: from 19 to 36 V;
  • Measurement accuracy regardless of the type of reflective surface.
Compare ALMA G2 vs. ALMA G4
Dozens of completed projects around the world
Honest answers to important questions
Can a methane detector detect other gases?
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.
Is laser radiation hazardous to the eyes?
Laser radiation is completely safe, it corresponds to class 1.
Does the remote laser detector work at night, in rain, fog and snowfall?
Yes. It is an active device, it emits at a certain narrow wavelength, so it does not need additional signal sources.
Is there impact of water vapor on the measurements?
No, there is no impact.
Do I need to calibrate detectors before commissioning?
No. The detector contains a reference container with methane inside and calibration is performed at each start-up and during operation.
How often do detectors need to be verified?
The detector does not need to be verified because it is not a measuring tool.
Why is a laser detector better than a common sniffer?
It works remotely. There is no direct contact with the hazardous environment.
How many miles can I survey in a helicopter in one working day?
According to our experience, in one working day, our experts survey up to 500 miles of a pipeline on average. This is about 5,000 miles in two weeks of flights.
Does the device have permits for installation on aircrafts?
Yes, for R44 and B206 helicopter models.
Your opinion matters!
Missing some functionality? Do you know how to improve the equipment? Please share your thoughts!