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.
ALMA G4 mini — is the solution for aerial pipeline inspections and offers a vital contribution to safety of transmission pipelines. Our product is based on the latest generation of laser spectroscopy and utilizes the most advanced technology, experienced pilots and operators for a dependable pipeline inspection.
The principle of ALMA is based on a pulsed beam from a diode laser, which is pointed at the location to be inspected. The laser wavelength of 1,65 μm corresponds to the first absorption band of methane.
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.
|Maximum detection range||up to 984 feet (300 meters)|
|Measurement time||0.04 sec|
|Minimum gas detection time||0.08 sec|
|from a distance of 98 feet (30 m)||5 ppm×m|
|from a distance of 164 feet (50 m)||10 ppm×m|
|from a distance of 328 feet (100 m)||40 ppm×m|
|from a distance of 492 feet (150 m)||80 ppm×m|
|Maximum measured concentration||20,000 ppm×m|
|Relative measurement error||1%|
|Laser operating mode:|
|Average power||60 mW|
|Power supply voltage||12 V|
|with camera||80 W|
|without camera||70 W|
|Operating temperature||14 ... 122 °F (–10 ... +50 °C)|