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
