The handy and lightweight correlator for effortless work and listening to signals on the receiver suitable for use in all weather.
Correlation is computer-assisted leak detection in underground pressure line systems. Leaks emit a noise which is carried along the pipe material. This noise reaches two fittings (valves, hydrants, home shut-off valves etc.) at different times. The time delay depends on the distance of the leak from the two contact points. Highly sensitive microphones record the incoming noises on the fittings and a radio transmitter transmits these noises to the receiver where the run time difference of the signals is determined.
The exact position of the leak is then calculated from the information about the material, the diameter and the length of the measuring section.