For a Cost-Effective Sewer Inspection

A rapid sewer line assessment tool based on a patented acoustic technology, SL-RAT optimizes your time and budget.

SL-RAT improves the performance of your networks, limits the risk of overflows, and minimizes the budget spent on cleaning and inspecting of your network.

Thanks to its ease of use and the rapid assessment of the condition of pipes, SL-RAT makes it possible to limit cleaning and camera inspection operations to only those sections of the network that are very problematic.


  • Rapid detection of blockages in unfilled (gravity) sewer pipes
  • Diameters from 6'' to 12'' (150 to 300 mm); larger diameters are possible, depending on conditions.
  • Inspection of network segments between 2 manholes
  • Segment length from 6 m to 240 m
  • Manhole depth: up to 12 m

Main benefits

  • Easy to use and quick inspection (measurements in 1.5 to 3 min)
  • Minimal inspection budget: 1/10th to 1/20th of the camera inspection budget
  • Allows you to inspect a larger portion of networks and reduces the need for cleaning and detailed inspection by CCTV camera
  • Works on networks with curves and bypasses obstacles
  • No need to interrupt or reduce the flow rate
  • Operator safety: no confined space entry, no contact
  • Robust, light, easy to transport equipment
  • Built-in GPS location for tracking inspection results on maps
  • Logging capacity of the device (500 time-stamped measurement points, with location)
  • Direct operation via PC (USB recovery) or via the associated web portal SLDOG
  • Can be imported into mapping software such as Google Earth or ArcGIS.
  • Patented and proven technology worldwide (on the market since 2010)


  • Receiver (RX) and Transmitter (TX) Dimensions: 14 cm X 35 cm X 84 cm
  • Weight: 5 kg (RX) / 8 kg (TX)
  • Operating Temperatures: -20°C to +70°C
  • Materials: Stainless Steel 301, Aluminum 6061, Composite Resin
  • Rechargeable battery: autonomy 1 week (RX) / 2 days (TX)
  • 122 x 32 pixel graphic display; 3 control buttons
  • Logging capacity: 500 measurements (more than 3 days)
  • Communication and synchronization of RX and TX by wireless XBee link
  • GPS localization compatible with GNSS, GLONASS and GALILEO. Nominal accuracy +/- 5 m


SL-RAT screen
SL-RAT pipe diagram
SL-RAT Google Earth
SL-RAT Google Earth
SL-RAT Google Earth
SL-RAT in action
SL-RAT in action
SL-RAT in action
SL-RAT Dog User
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