3D Land Geophone -HVSR-MASW-Holisurface GEMINI 2 Hz

ZI 10008

Standards:

Specification:

Data acquisition board speifications:

  • Power supply: through USB port
  • Sampling rate: from 20Hz to 8000 Hz
  • A/D Sigma-Delta converter resolution: 24 real Bit
  • Record time: from 60’’ to 30’
  • Acquisition channels: No. 3
  • S/N ratio at fs=1KHz: 117 dB
  • S/N ratio at fs=8KHz: 109 dB
  • Passband at fs=1KHz: 110 Hz, proportional to sampling rate

Gemini-2 Sensors Specifications:

  • Nat. Frequency: 2 Hz +/-10%
  • Sensibility: 2 V/cm•S-1 +/- 5%
  • Internal Resistance: 5.8kO +/-5%
  • Damping: 0.7 +/-10%
  • Harmonic Distortion: = 0.2%
  • Insulating Resistance:= 10 MO
  • Working Temp.: from -25°C to + 55°C
  • Sensor clamping: automatic when not in use
  • Physical Dimensions: diam.128mm, h.175mm
  • Weight: 2.15 kg

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