CME-4211-OBS

The CME-4211-OBS seismometer are specially adapted for ocean bottom applications and are versions of the CME-4211 models correspondingly.

These model share main technical parameters with corresponding regular versions but have a specially designed compact lightweight case, a flat flexible signal cable and consume less power. Specially designed hardware allows the seismometer to be installed inside titanium or glass waterproof sphere usually used in ocean bottom installations.

Brochure

Characteristics:

Frequency range	0.033 Hz (30 sec) - 50 Hz
Sensitivity	2000 V / (m/sec)
Self noise at 1 Hz	8.9 nm/sec (17.8 µV)
Sensitivity axes	Vertical, North, East
Supply voltage	12 V Nominal (9-16 V permissible)
Power consumption	8 mA
Temperature range	-12°C - +55°C - standard range
Maximum installation tilt	±15°
Dimensions	162 x 115 mm (diameter x height)
Weight	2.2 kg
Case material	Stainless steel, aluminum
Max. underwater depth	determined by the external housing
Cross-axes sensitivity	-60 dB
Cold-start time	10 - 30 min