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Horizontal geophone GH series

horizontal geophone
horizontal geophone
horizontal geophone
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HORIZONTAL 10 HTZ GEOPHONE Description Horizontal geophone 10 Hz with 1 m lead cable, land case, spike, Mueller clips connector General specifications • Manufacturer: RT CLARK • Typology: Vertical • Case: Land case • Connector: Mueller clips • Spike height: 7 cm • Cable lenght : 1 mt Physical specifications • Moving mass: 11 g • Maximum coil excursion: 1.5 mm • Diameter: 25.4 mm • Height: 33.3 mm • Weight: 86 g • Operative temperature range: -40°C to +100°C Frequency • Natural Frequency (fn): 10 Hz • Tolerance: +/- 5% • Max. tilt angle for specified fn: 20° • Typical Spurious frequency: >240 Hz Sensitivity • Sensitivity: 28 V/m/s • Tolerance: +/- 5% • Sensitivity with 1000 Ohm shunt resistor: 20.0 V/m/s Coil Resistance • Standard: 395 ohm • Tolerance: +/- 5% • Resistance with 1000 Ohm shunt resistor: 283 ohm Damping • Open circuit damping: 0.3 • Tolerance: +/- 5% • Resistance with 1000 Ohm shunt resistor: 0.7 Distortion • Distortion eith 0.7 in/s p.p. coil to case velocity: <0.3% • Distortion measurement frequency: 12 Hz The seismic exploration of refraction type is among the most diffused and used active seismic methods. This type of survey has the purpose to determine the thickness of the overburdens (aerated) above a rigid sub-layer and reconstruct a seismic stratigraphic sequence in terms of apparent longitudinal speed. If carried out according to more sophisticated calculation methods, it can be used to intercept, measure and characterize geo-structural profiles. Seismic exploration of refraction type is carried out by placing equidistant geophones in line on the ground, and generating seismic pulses through mechanical “inputs”.

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