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    Remote Real-time Intelligent Micro Seismograph
  • Model:GN209

    GN209 remotereal-time intelligent micro-seismograph is one high precision 32-bit ADCwireless node acquisition box.GN209 use the method of natural source surfacewave (micro motion) detection and triple circular array observationsystem.GN209 boxes are arranged on the circumference. When using the SPAC(Spatical Auto Correction Method)method, the radius of the circle array iscalled observation radius R, and the detection depth is H. There is usually thefollowing relationship between the detection depth H and observationradius R: H=(3~5)R. The purpose of microdynamic single-point detection isto obtain the shear wave velocity and interface depth of the formationmedium below the detection point. Also known as micro motion detection.

    The data can be stored in acquisition box locally. Asa new natural source surface wave method,our micro node seismograph use theinnovative design ideas of separation of geophone and acquisition box.This canfully meet the demands on the replacement of geophones with different low frequenciesfor different seismic exploration targets, such as 10Hz,5Hz,2Hz, 1Hz,0.5Hz or0.1Hz.

    Each GN209 micro node seismograph can support max 3channels surface wave geophones or 1 unit three-component signal geophone. Itis very flexible in the projects. About the power supply, we can choose theinternal lithium battery or external battery power supply to realize the longtime continuous work without manual intervention.

    Now our GN209 micro node seismograph is widely usedin different seismic projects such as urban geophysical seismic, geothermal,exploration in goaf (collapse, karst, etc.),active fault investigation,earthquake disaster

    prevention, civil engineering (groundinvestigation),evaluation of site stability etc.

    Product Photos:

                          

                                       Acquisition Box                                                                            1Hz Geophone

     

    Advantages&Features:                  

    1) Based on 4G network, wireless remote real-time datatransmission to a portable computer or data monitoring center, real-timeMonitor and evaluate the effect of micro-movement data (real-time calculationand display of dispersion curve) with high efficiency.

    2) According to data quality, real-time intelligentoptimization, remote modification configuration instrument operatingparameters, to achieve the best exploration effect. 3)High precision 32-bit ADconverter; Ultra-low electronics noise, less than 1.2 microvolts (0dB, 1mssampling);The precision synchronization error of each station is less than10ns. 

    4)Highsensitivity (> 200V/m/s), low frequency detector (0.1hz).

    5)Theexploration depth depends on the radius of the acquisition platform array, andthe exploration depth can be from a few meters to 5,000m.

    6)It is widely applied to urban underground space exploration, geothermal oil,gas and coal resource exploration and karst cave exploration without artificialseismic source,goaf exploration, mineral resources exploration, and variousshallow or deep geological exploration.

     

    TechnicalParameters:

    Channel per Box

    Max 3 channels surface wave geophones or   three-component geophone

    Data Storage

    Standard 16GB(Continuous storage can reach more than 30 days.)

    ADC Converter

    Σ-Δ 32-bit

    Gain Gears

    0dB、6dB、12dB、18dB、24dB、30dB、36dB

    Sampling Frequency

    125、250、500、1k、2k、4k、8k、16k、32k SPS

    Maximum Input

    ±2.5V (0dB gain)

    Dynamic Range(dB )

    123dB

    Noise Level

    0.06μV RMS(@250SPS,×16 gain)

    Common Mode Rejection(dB )

    125dB

    Rated Input impedance

    20K Ohms

    Working Temperature

    -40~85℃

    Rated Power Consumption

    2W (acquisition and data transmission)

    Dimension(MM)

    200×150×70

    Weight(KG)

    2.5KG(including battery)