GS201 Distributed Seismograph

Product Introduction

  • The GS-201 distributed high-precision terrestrial seismometer uses a 32-bit high-precision Σ-Δ ADC that supports 10,000-channel 2D and 3D seismic surveys and supports 4000 channels at 1ms sampling interval. The instrument adopts the topology of industrial notebook, main control station, cross station and collection station, portable and light; the exploration depth ranges from a few meters to several kilometers. It’s applicable to seismic work in the fields of reflection, refraction, surface wave exploration, pile foundation detection, ground motion measurement, seismic mapping, vibration measurement and wave velocity (shear wave) testing, and widely used in engineering geological exploration in fields of water conservancy, electricity, roads, railways, bridges, urban construction, transportation and groundwater, as well as seismic exploration for petroleum, coalfields, CBM, shale gas, metal and non-metallic mineral resources. After laboratory and field comparative tests, its main technical indicators have reached the international advanced level and some of the indicators are world-leading.

    GS-201 software interface

     

    Applications

    1. Foundation, subgrade and foundation

      investigation, foundation investigation, emptying investigation and lava exploration; classification of subsoil type and disease geological body investigation; subsoil investigation of physical properties of subsoil; reinforcement effect of foundation and quality inspection of backfill rolling compaction Depth and Concealed Bedrock Geological Structure Investigation.

    2. Project Tunneling

      Tunnel Inspection and Tunnel Surrounding Rock Classification; Concrete lining Quality Inspection; Tunnel bottom Inspection and Advanced Detection and Monitoring;. Vibration Monitoring

    3. Medium and Large-sized Reservoir Observation Operation

      Detection hidden Dangers' the DAMS; Reservoir Effect siltation siltation the Measurement and Inspection ;. Medium and Large-sized Water Conservancy Construction Dam, berms Detection

    4. Inspection Engineering Bridge

      Pier Foundation type Survey; abutment, Bridge, the Pile Concrete at Quality Inspection ;. Bridge Vibration Monitoring

    5. The Environmental and geological hazards detection and evaluation of

      landslides, karst, debris flow, goaf, active fault investigation.

    6. Metal, nonmetallic mineral exploration
    7. Coal, methane, shale gas, oil and other resources of two-dimensional and three-dimensional exploration

    Typical application

    •  24-channel, 48-channel and 96-channel distributed high resolution seismograph and refractometer
    •  96-channel and 480-channel 2D engineering seismic exploration and 2D resource seismic exploration

    • 3D exploration

Product function

  • Functions of GS201

    Mainframe
    ●Instrument parameters to configure performance indicators
    ●Real-time status monitoring of original cases
    ●Data storage, display, drawing and printing

    Main control station
    ●Issues orders
    ●Receives data uploaded by the cross station, and transmits to the mainframe through the network port
    ●Earthquake source interface
    ●Monitoring of station voltage, temperature, etc.

    Cross station
    ●2D and 3D measuring line gathers data and also serves as a collection station
    ●Monitoring of station voltage, temperature, etc.

    Collection station
    ●Supports 2-channel, 4-channel, 6- channel- and 8-channel configuration for single station
    ●32-bit analog-digital conversion
    ●Self-test indicators
    ●Monitoring of station voltage, temperature, etc.

Product features

32-bit analog-digital converter (adc) and low noise circuit design techniques

High-precision synchronization acquisition error less than 1μs

Good scalability

  • Multi-configuration preamplifier
  • Powerful self-test
  • Overall instrument performance meeting or exceeding the international advanced level
  • Stability and reliability
  • Support for 3D work
  • Professional customization and high efficiency

Specification

GS201 Mainframe

  • Operation platform: Industrial laptops with major indexes reaching standards of military products
  • Operation system: Windows XP
  • File format: Supports SEG-2, SEG-Y, SEG-D

Master Box

  • Interface functions: Industrial laptops with major indexes reaching standards of military products
  • Working voltage: 10~15V
  • Power consumption: 2W
  • Storage temperature: -40~85℃
  • dimension: 200*150*70 mm
  • Weight: 2.5KG

Cross Box

  • Working temperature: 10~15V
  • Working temperature: -40~70℃
  • Storage temperature: -40~85℃
  • dimension: 200*150*70 mm
  • Weight: 2.5KG
  • Interface functions: Monitoring of station voltage, temperature, etc.

Acquisition station

  • Analog-to-digital converter: 32-bit ∑-△ADC
  • Sampling: 4ms,2ms,1ms,0.5ms,0.25ms,0.125ms,62.5μs,31.25μs,15.625μs
  • Pre-release gain: 0, 6, 12, 18, 24, 30, 36 dB
  • Synchronous correction: <1μs
  • Noise: 1.20mv (sampling interval 1ms, pre-release gain 0dB); 0.11mv (sampling interval 1ms, pre- 36dB)
  • Single-channel power consumption: Operating mode 0.25W; standby mode 0.10W
  • Dynamic range: >124 dB
  • Harmonic distortion: <-112 dB
  • Gain accuracy: <0.1%
  • Common-mode rejection ratio: >110 dB
  • Differential input impedance: 20KΩ/50nF
  • Full amplitude input: 3.75 Vpp
  • Stopband attenuation: >140dB
  • Working voltage: 10~15V
  • Working temperature: -40~70℃
  • Storage temperature: -40~85℃
  • Common-mode input impedance: 100KΩ
  • Weight: 2.5kg
  • dimension: 200*150*70 mm
  • Interface functions: Monitoring of station voltage, temperature, etc.
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