Seismometer CME-3211

The short-period seismometer CME-3211 is designed for portable applications as well as for permanent installations in locations with the background noise being higher than the Low Noise Model.

The seismometer is very rugged, does not require any maintenance or mass locking and centering. Its dynamic range is 108 dB at 1 Hz, maximum installation tilt is ±15°.

3-component and 1-component (vertical, horizontal) versions are available.

The CME-3211 frequency characteristic with poles and zeros presentation is available at the link on the website of Incorporated Research Institutions for Seismology (IRIS).

Characteristics Delivery and warranty

Frequency range 1 Гц - 50 Гц
Sensitivity 2000 V / (m/sec)
Clip level 5 mm/sec
Integral noise in passband 15.8 nm/sec (31.5 µV)
Dynamic range 108 dB at 1 Hz
Nonlinearity 1% at 10 Hz
Sensitivity axes 3 orthogonal
Supply voltage 12 V Nominal (10.5-16 V permissible)
Power consumption 25 mA for 3-component version; 12 mA for 1-component version
Temperature range -12°C - +55°C - standard range
-40°C - +55°C - extended range
Maximum installation tilt ±15°
Dimensions 150 х 150 х 110 mm (3-component) / 120 х 120 х 110 mm (1-component)
Weight 3 kg (3-component) / 1.6 kg (1-component)
Case material Aluminum, waterproof
Output impedance 1000 Ohm
Cross-axes sensitivity -60 dB for 3-component version
Cold-start time 10 - 30 min
Leveling, mass locking none required
Case connectors 10-pin RS-10 Russian type connector (for 1-component version)
Delivery set 1.5 m open-ended cable (for 3-component version), 3 feet
Maximum output swing ±10 Ohm