PermaNET SU is an innovative correlating noise logger that contains a leak noise sensor with our advanced modem (capable of connecting via LTE-M or NBIoT with 2G fallback, 3G or 2G) for reliable and low-powered network monitoring.

Designed specifically for smaller and more challenging installation areas, PermaNET SU is robust and durable.

PermaNET SU is fully compatible with PermaNET Web, the online data viewing and analysis platform, combining to provide map-based display, GIS interface and full audio and correlation facilities.


Once installed, leak data is calculated using the proven Permalog algorithm, with all information transmitted via low cost cellular telemetry. This removes the requirement for expensive site visits and “drive by” data retrieval.

PermaNET SU transmits data through an integral modem with 2G, 3G, 4G, LTE-M (Cat-1) and other NBIoT cellular options available.

PermaNET SU allows leakage teams to monitor the status of each logger deployed from map based host software any internet enabled device using PermaNET Web.

Once the presence of a leak has been identified, secondary measures can be used to check and remove ‘false positives’, as well as localising leak position.


Key Features and Benefits

  • Telemetry: NBIoT/LTE-M based cellular communication standard with fallback 2G capability
  • Sensor detection indicator: daily check to confirm no sensor movement; alarm if a movement is detected
  • Single compact unit: combines leak noise sensor and telemetry into a single compact unit
  • Robust and durable: designed specifically for smaller and more challenging installation areas
  • Quick response: enables leakage teams to respond quickly to specific locations when a leak is detected
  • Secondary validation: 
    • Aqualog - detailed noise histogram to reduce 'false positives'
    • Audio - remotely listen to the noise
    • Remote correlation to localise leak position
  • Fully waterproof: the IP68 rating has been tested at 10m depth over a 24 hour period
  • PermaNET Web: software supports: -
    • Correlation
    • Map view
    • Aqualog
    • Select GIS file formats
    • Remote configuration
    • Filtering
  • Easy to use: compatible with HWM Deployment app. Select features can be programmed through PermaNET Web
  • External antennas: support improved signal strength (contact HWM for more information)
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HWM-Water Ltd
Ty Coch House
Llantarnam Park Way
Cwmbran, NP44 3AW
T: +44 (0) 1633 489 479 F: +44 (0) 1633 877 857 E: [email protected]
The Queen's Award for Enterprise: Innovation 2017
A Halma company
ISO 9001 ISO 14001 ISO 18001 ISO 27001