Pump unit for use with two Laser HUNTERs for separate intake and analysis of the gas flow via the left and right side of the vehicle. Possibility to clean the suction system by backwashing using an integrated compressor. Additional components are required for a functioning system for vehicle-based pipe network inspection and must be ordered separately: - 2x Laser HUNTER (item 251220). - intake unit & probes - accessories, e.g. hoses - test system - notebook, notebook holder & software - GIS software (Esders Pi NOTE) - GPS receiver