The Seba KMT HL5000 H2 is designed to detect water leaks with a ground microphone, and with the use of tracer gas.
To find a leak, the pipe to be investigated is filled with tracer gas (forming gas - 5% hydrogen and 95% nitrogen) through a hydrant or house connection. This escapes from the leak and is precisely located at the surface. Owing to its low specific density and molecular structure, tracer gas has the particular characteristic of quickly penetrating all materials (concrete, tiles, tarmac etc.) and rising vertically, where it can then be detected using the HL 5000 H2.