GD-20 is an advanced resistivity tomography system manufactured by Geomative Inc. New Terra Technology LLC is the exclusive sales representative of Geomative Inc. in the US and Canada.  This product utilizes active electrodes so that it easily allows the deployment of hundreds of electrodes in the field. It also supports induced polarization (IP) and self-potential (SP) data collection. In SP tests, the system allows dual cable deployment to separate the current and potential electrode, which can significantly improve the IP data quality.

The cable can be connected by a special connector to include infinite electrodes in the field data collection.

Different type of external power supplies are available to meet your needs at different sites, from shallow conductive sediments to deep resistive crystalline rocks.