EFT® / FGM® Technology

The EFT^® technology is a method used to investigate sealing systems in buildings and in civil engineering. An electrical tracer detects and outlines the tightness of the sealing system.

The EFT^® measurements are done pointwise with a measuring stick and touch panel computer with integrated data-logger. The measuring grid varies between 0.3 m and 2-5 m.

The EFT^® technology was patented 2006 at the European Patent Office with the No. P1387156B1. The utility model for EFT^® was issued 2005 under No. 203 20 677.0 / IPC: G01M 3/40 by the German Patent & Trademark Office; since 2004 in Austria under the No. 8088. EFT^® was registered in 2002 as a trademark under No. 302 58 184 by the German Patent and Trademark Office.

EFT measurements in a cellar

EFT measurements on a flat roof

The FGM^® Multi Sensor telemetric system consists of fast-measuring data acquisition units combined with unpolarized, high-resolution sensors.

We use the FGM^® technology for measuring larger areas under difficult conditions, e.g. in building pits, railway areas or industrial plants. Measurements can also be performed under water - in aqueducts, tunnels and metro stations, for example.

The measuring grid is adjusted to the measuring area.

The FGM® technology was patented in 1994 – Europ. Patent No. 94 914 506.4. The development of the FGM^® System was supported by the Ministry of Commerce of Brandenburg and the EU.

FGM measurement in a building pit.

Range of application for investigation of sealing systems in building constructions:

Subsurface building structures, exterior walls, bottom plates, building joints, underground car parks, liners, landfills
Flat roofs, terraces, parking decks
Wet areas, e.g. sanitary facilities
Basins, e.g. swimming pools, ponds, sprinkler tanks, etc.

In civil engineering:

Investigation of sealing systems of deep building pits in groundwater
Concrete or steel structures
Localization of groundwater flows in the underground and in dams
Permeability control of liners
Detection of pollution in the underground
In the petrochemical industry
Joint control
Underground water pipes, sewage pipes
Sealings of bridge constructions

Please find reference projects of EFT^® / FGM® technology here.