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Geotomographie - Model BGK5 -Borehole Geophone
The borehole geophone BGK5 is used to receive P- and S-waves in dry or water-filled boreholes. The geophone can be mainly applied for crosshole tests using the BIS-SH-DS seismic source and the generator IPG800 and downhole tests with e.g. a Sledge Hammer. This borehole geophone BGK5 consists of four horizontal sensors, separated by 45° intervals, and one vertical sensor. The geophone is coupled to the borehole wall by a pneumatic clamping system (inflatable bladder). Air is supplied to the BGK5 through an electro-pneumatic hybrid cable with a Kevlar tension string. A connector terminates the cable to the seismograph.Most popular related searches
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- Natural sensor frequency: 10 Hz (others on request)
- Sensor arrangement: 4 horizontal (45°)/1 vertical
- Operational depth: Up to 100 m
- Receiver length: 600 mm
- Receiver diameter: 51 mm
- Receiver weight: 2.8 kg
- Cable weight per metre: 145 g
- Cable strength: 2150 N
- Borehole diameter: 75 mm (or larger if spacers are used)
- Clamping system: Inflatable bladder
- Depth indicator: Cable marking every 2 m
- Connector: To any seismograph
- Storage: On drum