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Geobit - Model S-100 -Surface Type Wide Band Seismic Sensor
The S-100 is a three-component velocity equivalent output seismic sensor. The unit is ideal for local and regional seismicity and microseismicity monitoring as well as, for induced micro-seismicity monitoring.
- 3-axis Wide Band Response (10sec-98Hz) seismic sensor
- Designed according to the Force-Balance principle
- High Sensitivity 1500 V/m/sec
- Ultra-low power consumption.
- Surface Type.
- Velocity feedback design
- Build-in Self test function.
The design is based on the force-balance principle, Using three geophone elements, the bandwidth is extended to a lower frequency of the original geophone’s natural frequency. Actually three generations of the S-100 sensor have been implemented. Several low and upper corner frequencies provided through different senor configurations. Thus, 10s, 5s, 2s, and 1s low cut frequency corner is available as well as 50, 80 and 98 Hz high cut frequency corner. The sensitivity is 1000V/m/sec for the Mk1 version while it has been increased to 1500V/m/sec for the Mk2 and Mk3 versions.
The surface type has similar characteristics to the borehole type. No mass-lock or centering is required that makes easy the connection with the digitizer. The settling time of the unit is very short, only thirty seconds. Sensitivity is 1500V/m/sec (differentially) thus providing a very sensitive seismic unit. A test line is also provided for calibration and testing.