The СМЕ-4211-WP10/СМЕ-4311-WP10 are off-shore versions of the СМЕ-4211/СМЕ-4311 broadband seismometers.
The seismometers are supplied with waterproof cases made of strong plastic and a stainless steel bottom that allow their underwater installations at depths of up to 10 meters without a waterproof sphere. The heavy stainless bottom ensures the certain orientation of the sensor at the ocean bottom. The seismometers are very rugged and can be used both on an ocean bottom and on land.
Characteristics Delivery and warranty
|Frequency range||0.016 Hz (60 sec) - 50 Hz|
|Self noise at 1 Hz||2.8 nm/sec (5.6 µV)|
|Sensitivity axes||Vertical, North, East|
|Supply voltage||12-24 V Nominal (10.5-30 V permissible)
12 V Nominal (9-16 V permissible)
|Power consumption||27 mA
8 mA - low power
|Maximum installation tilt||±15°|
|Dimensions||178 x 172 mm (diameter x height, including lifting ring)|
|Case material||Plastic and stainless steel, waterproof|
|Max. underwater depth||10 m|
|Cross-axes sensitivity||-60 dB|
|Cold-start time||15 - 30 min|