Leak Detection Leak Detection Water pipe network monitoring and Underground leakage detection Services : Pipe Locator NPL – 100 from FUJI JapanPipe Locator NPL – 100 from FUJI Japan, Which is used for underground pipes weather metallic or non-metallic. Leak Noise Correlator LC-2500Leak Noise Correlator LC-2500 which is used for leakage detection on pipes Digital noise reduction DNR-1Digital noise reduction DNR-1 Which is used for leakage detection on water pipes.