Digital Seismometer CME-4211ND

CME-4211ND is a digital 3-component broadband seismometer. The rugged case includes a broadband seismometer and a 24-bit autonomous data acquisition system.

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.

Brochure

Characteristics:

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	12/24 V Nominal (9-36 V permissible)
Power consumption	800 mW
Temperature range	-12°C - +55°C - standard range -40°C - +55°C - extended range
Maximum installation tilt	±15°
Case connectors	PC-10TB (russian made), USB-B, 2хSMA-F for Wi-Fi and GPS
ADC sampling rate	1, 10, 50, 100, 125, 250, 500, 1000 Hz
ADC resolution	24 bit
Dimensions	180 x 195 mm (diameter x height, including handle)
ADC noise performance	22 bits noise-free resolution at 100 sps
Weight	5.0 kg
Gain coefficients	1, 2, 4, 8, 12
Case material	Aluminum
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
Inbuilt sensors for device health monitoring	temperature, main supply voltage
Cross-axes sensitivity	-60 dB
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 receiver	GPS / GLONASS
GNSS timing accuracy	< 1µs