Correlating noise loggers for automatic leak location

The Enigma3m correlating noise loggers utilise 3G / GPRS communications to provide remote location of leaks in water distribution networks. Enigma3m is deployed in underground chambers and requires no costly above ground technology.


  • Correlation processing for accurate leak positions
  • Daily transmission for improved efficiency and reduced leak run time
  • Simple installation – no above ground radio repeaters required
  • Data available at any location via PrimeWeb on a web browser
  • Leak listening for confirmation of leak noise
  • Logger GPS location stored
  • Embedded roaming SIM for optimum network communication

Correlation thumbnails displayed with logger and leak positions

Rapid leak location

The Enigma3m correlating loggers transmit daily leak noise data via the 3G or GPRS communication networks. This data is sent to a server. The data provides leak alarms and also enables the user an opportunity to listen to the noise thus helping to confirm it is leak noise. Furthermore, correlation can be performed from many loggers to accurately locate leak positions. To enable accurate correlations a daily logger time synchronisation is carried out.