Single Seismic Geophone 4.5Hz

Single Seismic Geophone 4.5Hz:

Equipped in Land Case with Steel Soil Spike and 1Meter Leader Cable(Custom Lead Distance optional) and Terminated with Clips( Split Spring Clips,Mueller Clips,KCK Connector or Kooter Connector optional). With Vertical Direction, Horizontal Direction and 3 Component Structure available.

Type: 4.5Hz-I
Natural Frequency ( Hz ): 4.5 ± 10%
Coil resistance(Ω): 375 ± 5%
Damping: 0.6 ± 5%
Open circuit intrinsic voltage sensitivity ( v/m/s ):28.8 v/m/s ± 5%
Harmonic distortion( % ):≦0.2%
Typical Spurious Frequency (Hz ):≧150Hz
Moving Mass ( g ):11.3g
Typical case to coil motion p-p ( mm ):4mm

Type: 4.5Hz-II
Natural Frequency ( Hz ): 4.5± 5%
Coil resistance(Ω): 375± 5%
Damping: 0.56± 5%
Open circuit intrinsic voltage sensitivity ( v/m/s ):28.8 v/m/s ± 5%
Harmonic distortion( % ):≦0.3%
Typical Spurious Frequency (Hz ):≧140Hz
Moving Mass ( g ):11.1g
Typical case to coil motion p-p ( mm ):3mm