AquaLeak 400 – Water leak detector

The Gastech AquaLeak 400 is a professional electronic water leak detector for fast and accurate leak location on both buried water distribution networks and internal domestic and commercial piping systems. The unit weighs 700 grams with dimensions of 220 x 150 x 200 mm, powered by three AA alkaline batteries for full field autonomy without charging requirements. The LED display panel shows signal strength as the operator moves probe contact points along the pipe route, with noise level increasing as the probe approaches the leak source. The system is CE marked and compliant with the 2004/22/CE directive. Three supply configurations are available — SC (Bell probe + HiFi headphones + carry case), SP (Tip probe + stabilized tripod + HiFi headphones + carry case), and PRO SC/SP (Bell probe + Tip probe + HiFi headphones + carry case) — covering all standard network and indoor survey requirements from a single instrument body.

The high-sensitivity sensor electronics amplify structure-borne and water-borne acoustic noise generated by pressurized leaks and transmit the amplified output to HiFi capsule headphones worn by the operator during the survey. Digital filters eliminate ambient background noise that would otherwise mask the leak signal during urban or indoor surveys. Two distinct probe types cover different survey scenarios: the geophone Bell probe detects leak noise conducted through the ground surface at depth, suited to buried road pipes and deep installations; and the piezo-resistive Tip probe with stabilized tripod makes direct contact with valve caps, hydrant couplings, and service fittings for surface-level contact point surveys. Both probe types connect to the same instrument body, allowing a single operator to switch between ground-surface and contact-point detection modes without changing instruments.

The Gastech AquaLeak 400 is deployed by water network operators, plumbing contractors, leak detection specialists, and insurance assessors for locating leaks on buried water mains, house service connections, underfloor heating pipes, concealed domestic pipework, and commercial building water systems — wherever the leak position is not visible and excavation or structural intervention must be minimized by confirming the precise leak point before opening floors, walls, or road surfaces.

Leader Infra supplies this multi-probe, CE-certified electronic water leak detector for water network operators and plumbing contractors — delivering high-sensitivity amplified acoustic leak location with geophone and contact probe options in a single 700-gram field instrument suited for both network surveys and indoor domestic investigations.

FAQ — What is the operational difference between the Bell probe geophone and the Tip probe piezo-resistive sensor on the AquaLeak 400? The Bell probe geophone is placed on the ground surface above the buried pipe — it detects leak noise transmitted upward through the soil from the pipe to the surface, making it suited for buried road pipes and deeper installations where no above-ground access point is present. The Tip probe piezo-resistive sensor makes direct rigid contact with a valve, hydrant, or fitting on the pipe — detecting noise conducted directly through the metal or plastic fitting body, giving a stronger and more direct signal at accessible network contact points than a ground-surface geophone reading.