GD-05 Resistivity MeterGD-10 Resistivity and IP Imaging SystemGD-20 Resistivity and IP Imaging SystemBP Series PowerWells and Marine
  • GD-10 system

    Advanced Distributed Centralized System

    simple and flexible

    Video
  • GD-10 system

    Advanced Distributed Centralized System

    Flexible survey layout, convenient field operation

    Video
  • GD-10 system

    Advanced Distributed Centralized System

    Flexible survey layout, convenient field operation

    Video

Product Introduction

  • GD-10 is developed based on the latest digital and analog circuitry technique, making it the world leading multi-functional direct current (DC) method instrument. This equipment can be adopted in self-potential (SP), apparent resistivity and induced polarization (IP) surveys. Not only GD-10 supports regular ERT survey configurations, subsurface profiling using both 2D and 3D survey arrays are also supported. GD-10 is powerful in conventional surface ERT surveys, borehole testing, mining tunnels, marine and submarine surveys. Online monitoring mode is readily available for GD-10 to initiate remote automated survey and realize long-term unmanned field monitoring.

    As for high-powered IP survey, the transmission module of GD-10 can be connected to external DC power supply up to 1200V (peak-to-peak 2400V) and output current up to 6A. GD-10 is highly compatible with independent external transmitter and implemented in extremely high-powered IP survey (>7200W). The unique IP profiling functionality is similar to ERT method, in which the cross-section profiling can be performed through multi-channel acquisition within single electrodes layout, thus enhancing the overall field survey efficiency.

    In ERT survey, electrode placement impacts the overall survey efficiency. Field survey performance highly relies on the volume and weight of the cabling system, layout efficiency, module reliability and the robustness to adapt to environment and client 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 is either 12 or 24 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. Not only long 2D cross-section profiling survey can be performed, 3D cross-section profiling is also feasible using this system which can be laid out simply, robust, and of high reliability.

    GD-10 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-10 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.

    Main applications :

    - Energy resources exploration                                                     - Seawater intrusion detection and dam inspection

    - Metal and non-metal mining resources prospecting                 - Borehole/Cross-borehole investigation

    - Groundwater resources exploration                                            - Geological mapping

    - Underground contamination variation detection                       - Cavity exploration

    - Archeological studies                                                                     - Well electrical resistivity testing

    - Real-time monitoring of landslides                                              - Crosshole ERT

    - Sediment detection of river, lake and reservoir                         - Bedrock detection for pile foundation

    - Urban engineering exploration                                                   - Marine and submarine survey

     

Product function

  • 1D Resistivity or IP

    In 1D VES survey, transmission up to full power 7200W (1200V*6A) can be emitted to allow excited pulse signals to reach deeper strata. For small signals, up to 255 stacking amounts are allowed to enhance measurement accuracy. Prior to field testing, measurement array configurations and the electrode scanning parameters can be inputted into the monitoring host, thus reducing the time spent in field to enter the survey parameters and increase survey productivity.

  • Supported 1D arrays (click for details) :

    4P-VES
    Composite Profiling
    Dipole VES
    3P-VES
    Mid-grandient
    Customized arrays
  • 2D ERT or IP Profiling

    GD-10 ERT system is capable of conducting 2D cross-section profiling of ERT and IP in field. Through the array script management in Geomative Studio, clients can predefine survey parameters on PC prior to field surveys. Up to 3200W (800V*4A) transmission power can be deployed in field. GD-10 is equipped with both centralized cabling and distributed cabling system, to fulfill any complex field environment.



    More survey layout solutions:

    Conventional ERT(12 Takeouts Dual-Way Cable)
    Conventional ERT(24 Takeouts Cable)
    GD-10 Advanced 2D,Conventional ERT
    Conventional IP
    Dual-takeout ERT Survey
    Dual-takeout IP Survey
  • Supported array configurations (click for details)

    Wenner(α)
    Wenner(β)
    Wenner(γ)
    Pole-Dipole(AMN)
    Dipole-Pole(MNB)
    Pole-Pole(AM)
    Dipole-Dipole
    Schlumberger
    Wenner-Schlumberger
    Edge Gradient
    Double Side-3P
    Cross-Hole Dipole
    Bipole Up-Hole
    Customized arrays
  • 3D ERT or IP Profiling

    Using GD-10 ERT measurement system, the sectional centralized cabling layout can be deployed robustly in a snakelike layout pattern to perform 3D ERT and IP survey. Up to 3200W (800V*4A) can be transmitted under this mode. If ERT cabling is insufficient, limited cabling can be deployed in a dual-direction shifting combination or multiple paralleled 2D survey line data fusion method to cover a larger 3D region.

  • Supported 3D arrays(click for details)

    Wenner(α)
    Wenner(β)
    Schlunmberger
    Dipole-Dipole
    Pole-Dipole
    Pole-Pole
    Mid gradient
  • High-powered IP Mid-gradient Profiling

    Geomative is the first in the industry to adopt ERT modules in the high-powered IP mid-gradient cross-sectional profiling. Similar to the ERT method, clients can deploy a pair of AB electrodes and multiple sets of non-polarizable electrodes. AB transmitting electrode is connected to the AB terminal port on the monitoring host, while the non-polarizable electrodes are connected to the ERT cables takeouts. During IP survey, the host instrument emits electrical signal simultaneously and sequentially select MN electrodes in automated mode. Under sufficient amount of cabling and electrodes, the whole lateral cross-sectional profiling can be accomplished in one run, with a significant enhancement in survey efficiency. If signal emission is performed using external transmitter, clients can simply connect the AB terminal port of GD-10 host to the emission circuit in series. GD-10 will automatically monitor and detect the transmitted electrical signals, triggering and synchronizing the MN acquisition channels simultaneously.

  • Features

    GD-20 system has rich and powerful software functionalities, assisting clients to resolve multiple complications during field survey, enhancing survey efficiency and data quality. Detailed functionality is introduced below (click for details):

    Set the start/end electrodes
    Skip takeouts
    Ignore take-out
    Set the start/end layers
    Contact resistance
    Multi-dimensional data display
    Roll-along testing
    Stacking
    Sampling interval
  • Software upgrading and scalability

    GD-10  adopted upgradable design where the embedded software is fully upgradable. All clients are entitled to lifetime software upgrade service and enjoy the following benefits!

    -Gather demands and suggestions from clients worldwide and develop new functionalities, which would be implemented in new software versions to share these whole new global experiences.

    -Apart from software upgrades, GD-10 also provides high, medium, entry class level hardware, enabling every client to find models suited to their budget and requirements. As our clients’ business expands, when they have sufficient budget and demands for more advanced model, they can easily upgrade their instruments through license upgrading and purchasing relevant accessories.

    GD-10 monitoring host models are comprised of Senior、Advance、Supreme 2D/3D、Supreme 2D+/3D+. Detailed introductions to all the models are as follows:

    GD-10 Senior
    GD-10 Advanced
    GD-10 Supreme 2D/3D
    GD-10 Supreme 2D+/3D+

Product features

Automated stacking for data quality enhancement

During the data measurement process, GD-10 automatically analyzes signal strength and data quality to determine whether long measurement period and stacking mode should be activated. For sites with strong signal and good data quality, measurement system continuously sweep and scans in high efficiency mode until bad data quality is detected, in which long measurement period or stacking mode would be elaborated to enhance data quality to the maximum extent. Clients can also set stacking amount according to any survey points, survey layers or individual tasks.

Unique sectional centralized mode of GD-10 measurement system

GD-10 series is designed with unique sectional centralized survey layout mode. This technique fully integrated the advantages of both conventional centralized cabling system and distributed cabling system, incorporating the advantages of simple cabling placement and long profiling survey from distributed system, and the simple, reliable and low-cost characteristic from centralized cabling system.

Multidimensional data display, Discover and deal with all issues on-the-spot, instant positioning

Monitoring host instrument provides extremely rich software functionality, to assist clients in handling issues and adjusting settings under different field applications. This allows the data recording of various ambient data and survey procedures in a fashion as real, complete, objective as possible. Detailed functionalities are as follow:

  • Scatter plot illustrates the R0 oscillation degree of each layers to directly determine data quality
  • Voltage-current plot of each survey points can be examined. Attenuation curves are shown for IP surveys and evaluate data quality through the curves.
  • R0 profiles is shown and markers can be manually edited for easy observation.
  • Main interface displays I, V, R0, η, M, the electrode locations of A, B, M and N. The bottom greyed interface shows the grayscale bar of V, I, R0, standard deviation at any specific survey locations. Total survey points, remaining survey points and estimated time remaining are also displayed during data acquisition.

Rich array database and customized array scripts

Different geophysical exploration may encounter vast difference in their survey objective, environment, approach, response signal and so on. Survey methods should hence be robust and flexible enough to tackle all possible scenarios. Based on programmable and customizable survey concept, Geomative introduced survey scripting method, enabling clients to plan detailed survey configurations, electrode location and stacking amount, prior to their field surveys.

After array configuration is selected, Geomative Studio automatically generates survey script according to array required electrode location relationship. Clients can preset filter conditions to pinpoint the targeted region. Monitoring host skips trivial survey points during field survey and only measures data points within the targeted region, which would effectively shorten the overall measurement duration efficiently.

Stacking amount can be defined in the scripts by survey points or layers. Measurement can be conducted faster for stronger signals at shallow layers without any data stackings. As for deeper layers with weaker signals, data stacking amount is required to enhance survey accuracy. Survey point measurement sequence adjustment to increase the survey interval between neighboring survey points can reduce the noise interferences between the neighboring points. If customized survey configuration is required, the array relationship of electrode locations can be fully defined by clients by using Microsoft® Excel to edit survey point configuration and  perform customized measurements.

  • Support self-defined scripts and script cropping
  • Support three types of array survey method, including survey by layer, roll-along survey, survey by interval skipping.
  • Comprehensive standard array database, including Wenner, Schlumberger, Wenner-Schlumberger, Pole-Pole, Pole-Dipole, Dipole-Dipole, Crosshole Dipole-Dipole, Bipole-dipole arrays and so forth.

Powerful roll-along survey, 3D and pseudo-3D profiling

  • Roll-along testing, no repeated survey points, robust roll-along approach and highly efficient.
  • Efficient pseudo 3D mid-gradient profiling.
  • Distributed 3D survey , separated transmitter and receiver to achieve high current survey.

Takeout skipping at equal intervals, empty multiple arbitrary takeouts, automatically remove defined survey points, achieve large-spacing survey using small-spacing cabling layout

  • Takeout skipping function can be used to increase survey spacing, up to four takeout spacing skipping is supported.
  • When arbitrary takeouts cannot be connected to electrodes or is broken, takeout skipping function can be activated to resolve this issue to prevent anomalies in measured dataset.

Robust, efficient, simple cabling placement, dual-takeout mode doubles up current threshold value

  • Rapid cabling placement, flexible monitoring host placement location and can be placed arbitrarily at any cable connectors.
  • In dual-takeout mode, the upper limit of the varying current increases from 2A to 4A, enhancing signal and data quality simultaneously.

Direct stacking of electrical resistivity, satisfying clients’ needs for data quality and survey efficiency enhancement

  • Monitoring host intelligently identify data quality, automatically activate data stacking for survey points with bad data quality to reduce random noise interference to dataset.

Perfect DC resolution

  • BP-450 power supply, lithium battery, compact and high C/P value, supports three voltage level of 150V, 300V and 450V with current limitation function.
  • GP-5000 current rectifier supports maximum power of 5kW, established on the latest digital power supply technique with adjustable output voltage range of 50-1000V, maximum current of 5A and conversion efficiency over 90%.
  • BP145 power supply supports three voltage level testing of 48V, 96V and 144V. Supports up to 2A current output and multiple host series connection. High stability and reliability with high C/P value.

Product Accessories

  • GD-10 mainframe
  • CA-12 ERT cable
  • CL-10 cable leader
  • L type cable
  • BP-145 power
  • BP-450 power
  • Electrodes
  • Mainframe accessories
  • GP-5000 rectifier
  • CA24 ERT cable
  • CA30 ERT cable
  • CS60
  • 12 pin communication cable

Specification

Transmitter

  • Maximum Tx power: 3200W
  • Maximum Tx Voltage: 800V
  • Maximum Tx Voltage: 4A
  • Current accuracy: 0.3%±1uA
  • Pulse type: square wave
  • Protection: IP65, over-current, over-voltage, short circuit
  • Pulse width: 0.5、2、4、8、16s
  • Input impedance: ≥200MΩ

Receiver

  • Stacking: 1-255
  • Voltage range: ±24V
  • SP compensation: ±10V
  • Noise rejection: ≥120dB
  • Accuracy: 0.3%±1uV
  • Dynamic Averaging: 24bit

Others

  • Weight: 8KG
  • Size: 39cm*20cm*29cm
  • Working temperature: -10℃~50℃
  • Storage temperature: -20℃~+60℃
  • Operating humidity: ≤95%
  • Memory capacity: 8GB
  • Charging voltage: 120~250VAC(50HZ/60HZ)
  • Display screen: 5.7-inch full-color LCD screen, 640*480
  • External power: DC24~60V
  • Built-in battery: 16.8V lithium battery
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