GD-20 is a brand new multichannel geo-electrical system, designed with 5 or 12 channels and up to maximum 10 survey points can be measured concurrently for ERT survey, highly enhancing field survey efficiency. GD-20 can be used in SP, ERT and IP surveys. Comparing to single channel instruments, GD-20 boosts ERT survey efficiency up to 2-3 times in average and lowering working duration of field survey.
GD-20 is portable and equipped with internal storage for data recording. Multichannel switch box. GD-20 is capable of performing VES, ERT and For VES, 12 depths can be measured concurrently. For ERT surveys, data acquisition can record up to 10 concurrent channels. mode satisfies the need for arrays with infinite far electrodes of N terminal, with 10 individual acquisition channel for the best data collection efficiency.
|Main applications : |
-Energy resources exploration -Seawater intrusion detection
-Metallic and nonmetallic mineral resources investigation -Drilling / cross-hole detection
-Groundwater resources exploration -Geological mapping
-Underground pollutant change detection -Archeological research
-Resistivity logging -Real-time monitoring of landslides, tailings dams.
-Interwell tomography -Sediment detection of river, lake& reservoir
-Urban engineering exploration -Surface or underwater surveys in the ocean
-Cave exploration& pile foundation bedrock
In ERT surveys, the major influencing factors to survey efficiency and operation cost are the switching device and multi-takeout cabling, overall size and weight of measurement system, layout efficiency, module reliability and the robustness to adapt to environment and clients’ demand. Geomative integrated the advantages of both conventional centralized cabling system and distributed cabling system, incorporating the low-cost and high reliability of the former with the high efficiency and infinitely extensible cable sections of the latter system. A distributed-centralized compacted cabling technique is hence developed, the Geomative. Each cable section has either 10 or 20 takeouts and is controlled through a centralized exchange control at the either end of the cabling heads, while the communication between the cabling heads and the measurement host adopted a distributed controlling approach. Both long cross-section ERT profiling survey and IP profiling can be performed by this system, in which the electrode placement is simple and robust, and the cabling system is highly reliable and low cost.
GD-20 adopted modularized design and fully upgradable scheme, lowering the hardware maintenance and replacement cost. When clients intend to upgrade the purchased instrument, clients will only need to purchase corresponding license authorization and modules. Subsequent upgrades can be performed online through Geomative Studio directly and pre-purchased hardware resources are fully utilized. Furthermore, Geomative Studio software facilitates GD-20 geo-electrical measurement system to realize two major features:
- Engineering management mode enables client to manage complicated task particulars and measurement data from field surveys.
- Array configuration management function saves client the field operation time and enhance survey efficiency.