Geophone
Geophones are mainly used for active and passive seismic exploration & monitoring. It can be uniaxial & triaxial; Vertical & Horizontal type with desired spikes, cable and clips to connect the Sismic cables. The geophoines are available in the frequencies of 2Hz, 4.5 Hz, 10Hz, 28Hz, 40Hz & 100Hz etc. Typically Vertical & Horizontal Geophones 4.5 Hz with Natural Frequency (Hz) : 4,5 ± 10%, Open Circuit Damping: 0,6 ± 5% and Armonic distorsion (%) < 0.20 wich is mostly useful for MASW (Multi acquisition Surface Wave) Analysis.