Broadband digital seismometer CME-4211ND

CME-4211ND is a broadband digital seismometer. The rugged case includes a broadband seismometer and a 24-bit autonomous data logger. 

With its small size and light weight, easiness in operation, mechanical reliability and low energy consumption, this seismometer can be an irreplaceable instrument for field geophysical surveys. While equipping permanent seismic stations, a reasonable price combined with recordings of broadband signals of long-distance earthquakes will be attractive. 

CME-4211ND is excellent for structural health monitoring as a part of timely or permanent deployment systems. In addition to the standard version designed for field surveys, the seismometer is also available for boreholes of over 108-mm diameter.

Click here for available downloads to operate CME-4211ND. If the FTP-connection fails, right-click to copy the link and open it with Windows Explorer.

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
Nonlinearity 0.5 %
Sensitivity axes Vertical, North, East
Supply voltage 12 - 24 V Nominal (9 - 36 V permissible)
Power consumption 800 mW
Temperature range -40...+55°C
Maximum installation tilt ±15°
Case connectors PC-10TB (russian made), USB-B, 2хSMA-F for Wi-Fi and GPS
Gain coefficients 1, 2, 4, 8, 12
ADC sampling rate 1, 10, 50, 100, 125, 250, 500, 1000 Hz
ADC resolution 24 bit
ADC noise performance 21.6 bits noise-free resolution at 100 sps
Data recording mode continuous, schedule
Data recording format internal binary; miniSEED, SEG converters provided
Data storage microSD 32 GB
Data transfer USB 2.0, Wi-Fi
Cross-axes sensitivity -60 dB
Inbuilt sensors for device health monitoring temperature, main supply voltage
Cold-start time 5 - 15 min
Leveling, mass locking none required
Delivery set GPS antenna, Wi-Fi antenna, set of cables, bubble level, three legs
GNSS timing accuracy < 1µs
Case material Aluminum
Dimensions 180 x 195 mm (diameter x height, including handle)
Weight 5.0 kg