The cable system
The measuring method allows a full-surface and safe monitoring of the sealing. The measurements are fast and largely independent of the ballast or ongoing work above the geomembrane. The location of defects is very accurate.
The necessary cable technology is installed during the construction of the sealing. The measurement is carried out on these cables either with a mobile or permanently installed measuring device.
It is an electrical measuring method. An electrical signal is generated on one side of the geomembrane while a measurement is performed on the other side. Since the geomembrane is electrically insulating, the signal can only be detected if a damage occurs.
This measuring method allows a direct inspection of the geomembrane.
Simple and durable
The durability of the installed cable technology is very high. Measuring cables are extremely robust and adapted to the loads in civil engineering.
The cables have a high elongation capacity and can thus absorb local settlements without damage.
The main components of the system are the measuring cables. They are installed prior to the geomembrane. These cables are unrolled in parallel at distances of several meters.
Due to the complete prefabrication of the cables, this work can be carried out by the installer of the geomembrane or the construction company without hindering the construction process.
All cables are routed through the edge area of the liner into a cable cabinet, where they are connected.
Analysis and display
The results are clear-cut and can be readily displayed in understandable form. The locations of any leaks are identified conspicuously and precisely.
The entire extent of a membrane can be inspected for the slightest leak with the help of this electrical technique. Thanks to interpolation, accuracy of the detection of leaks is significantly better than the actual interval between electrodes.