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New Online Leak Mapping For PermaNet Through Your Web Browser

Posted: Wednesday 17th March 2010

The PermaNet system from Halma Water Management (HWM) receives data from Permalog+ noise loggers deployed on water pipes to listen for leaks, and transmits this information wirelessly to an office computer. A new development called ALMOS (Acoustic Leak Monitoring Online System) now enables live, onscreen display of PermaNet data tracking from the PermaNet system from any internet-connected PC with using a new graphical interface and the latest digital mapping technology – without the need for any specialist software.

Users of the system simply have to visit the website ( and log in to see the precise location, condition and noise levels of their deployed Permalog+ loggers. This information can be displayed either in a list form, or overlaid onto a detailed map, terrain or satellite view of the area. Loggers in a non-leak state appear in blue on the map, those transmitting a leak alert are shown in red, and those with anomalous readings display a yellow warning sign. Each logger can be individually highlighted to view more detailed information, including its serial number, noise level, signal strength and acoustic spread. This enables problem areas to be quickly and accurately identified, and offers the potential for in-depth analysis of the leak situation. The list view allows loggers to be sorted by a number of variables, and historical leak data for each one is available at the click of a mouse.

Users can be set up to have different levels of access to data and administrative functions, so several people can view the data simultaneously but only administrators will be able to make changes to it. A demonstration of the system is available at, which shows a district of Copenhagen where the system has been used for several months successfully to achieve and maintain a 10% reduction in leakage.

The ALMOS system can be used to view and manage integrated data from several sources, including PermaNet and Automatic Meter Reading Readers (AMR’s) systems, with all data running through an extensive web server-based algorithm analysis post processing function (patent pending). This offers currently unparalleled water management functionality to save time, water and money.

Water suppliers can now monitor 100% of their distribution system confidently and effectively, knowing that the combination of Permalog® technology, PermaNet data communication and ALMOS online data presentation enables them to identify potential leak sites quickly, accurately, conveniently and automatically.

Tel: +44 (0)1633 489 479
Fax: +44 (0)1633 877 857

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