Vehicles set up for Gas Leak Detection

The Gastech DEDALO LASER LGD-8000 CP is a vehicle-mounted gas leak detection system combining a Laser Gas Detection unit (LGD-8000) with a high-capacity dual-mode automatic sampling system — a bottom carpet array and forward-facing anterior sampling tubes. The LGD-8000 detection unit operates on laser absorption technology with a measurement range of 1 ppm to 10,000 ppm, calibrated to CH4 methane. Operating temperature range spans -10°C to +40°C for the sensor unit and -40°C to +60°C for the sampling system. The sampling array consists of 12 individual sampling points with a total aspiration flow rate of 3 x 20 Nl/min, fitted with hydrophobic filters for pump and sensor protection. Power is supplied by two 12V batteries connected in parallel — vehicle battery plus a dedicated system battery — with automatic recharge during vehicle operation and automatic disconnection at shutdown. The system is CE certified under declaration of conformity.

The microprocessor-controlled detection unit features digital zero-reset, adjustable alarm threshold, and automatic alarm activation. An auto shutoff function cuts gas flow automatically on malfunction or system shutdown. The vehicle kit includes a dual-lamp roof flash bar, single roof flasher, lateral retroreflective bands, and a magnetic removable “Slow Vehicle” sign for rear placement during active survey operations. Internal testing confirms methane trace detection at vehicle speeds up to 40 km/h, subject to pipe type, terrain, atmospheric conditions, and probe-to-ground distance. Optional GPS Logger software and GPS Logger Map software with full cartographic management are available for data logging and route management.

Gastech DEDALO LASER LGD-8000 CP is deployed by gas network operators conducting mandatory pipeline survey operations under AEEG (Italian Regulatory Authority for Energy) directives — covering urban road-level gas leak surveys across buried methane and LPG distribution networks. It is mounted on compact vehicles or tricycles to access narrow urban streets, residential zones, and pedestrianized areas where full-size survey vehicles cannot operate. The system simultaneously surveys road surface gas concentrations via carpet sampling and detects leaks from anterior pipe positions in a single pass.

Leader Infra supplies this AEEG-compliant, laser-based vehicle gas leak detection system for gas network operators and utility maintenance contractors — delivering simultaneous dual-mode sampling, microprocessor-controlled detection, and integrated GPS data management in a single compact vehicle-mounted platform.

FAQ — What is the difference between the carpet sampling array and the anterior tube sampling on the LGD-8000 CP? The carpet array samples gas concentrations across the road surface directly beneath the vehicle as it moves, detecting diffuse leaks from buried pipelines below the road. The anterior tubes sample ahead of and along the front of the vehicle, targeting gas accumulations rising from pipe joints and connections at road level. Operating both simultaneously in a single pass maximises coverage without requiring a second survey run on the same route.