The CME4211-BH150 model is a 3-component broadband low-noise seismometer.
It is designed for permanent or long-term installations in dry or flooded boreholes at depths of up to 250 meters.
The seismometer has a hermetic connector and a lifting ring for installation into boreholes and subsequent surfacing.
The instrument is rugged and does not require any adjustment or mass-centering.
Characteristics Delivery and warranty
|Frequency range||0.033 Hz (30 sec) - 50 Hz|
|Sensitivity||2000 V / (m/sec)|
|Clip level||5 mm/sec|
|Self noise at 1 Hz||8.9 nm/sec (17.8 µV)|
|Dynamic range||112 dB|
|Sensitivity axes||Vertical, North, East|
|Supply voltage||12 V Nominal (10.5-16 V permissible)|
|Power consumption||25 mA|
|Temperature range||-12°C - +55°C - standard range
-40°C - +55°C - extended range
|Maximum installation tilt||±15°|
|Dimensions||105 x 303 mm (diameter x height including lifting ring)|
|Case material||Stainless steel, waterproof, depth down to 15 m|
|Max. underwater depth||250 m|
|Output impedance||1000 Ohm|
|Cross-axes sensitivity||-60 dB|
|Cold-start time||10 - 30 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|