This is a 3-component broadband low-noise borehole seismometer.
It is used for permanent or long-term installation in dry or flooded boreholes at depths of up to 250 meters.
The seismometer has a hermetic connector and a lifting ring for borehole installations and subsequent surfacing.
The instrument is rugged and does not require any adjustment or mass-centering.
Characteristics Delivery and warranty
|Frequency range||0.016 Hz (60 sec) - 50 Hz|
|Clip level||5 mm/sec|
|Self noise at 1 Hz||2.8 nm/sec (5.6 µV)|
|Dynamic range||122 dB|
|Sensitivity axes||Vertical, North, East|
|Supply voltage||12 V Nominal (10.5-16 V permissible)|
|Power consumption||25 mA|
|Maximum installation tilt||±15°|
|Dimensions||105 x 505 mm (diameter x height including lifting ring)|
|Case material||Stainless steel, waterproof, depth down to 250 m|
|Max. underwater depth||250 m|
|Output impedance||1000 Ohm|
|Cross-axes sensitivity||-60 dB|
|Cold-start time||15 - 45 min|
|Leveling, mass locking||none required|
|Case connectors||Russian RS-10 type 10-pin connector with additional hermetic sealing|
|Delivery set||Lifting ring, 3 feet, pin|
|Maximum output swing||±10 V, differential output|