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.

Characteristics Delivery and warranty

Sensitivity axes Vertical, North, East
Clip level 5 mm/sec
Frequency range 0.033 (30 sec) - 50 Hz
or by customer specification
Dynamic range at 1 Hz 121 dB
Cross-axes sensitivity -60 dB
Non-linearity at 1 Hz1 0.5 V / (m/sec)
Temperature range -40°C - +55°C - extended range
Supply voltage 12 V Nominal (9-36 V Optional) or 5 V from USB
Power consumption < 600 mW
Cold-start time 10 - 30 min
Maximum installation tilt ±15°
Leveling, mass locking Not required
Noise performance -145 dB (relative to 1 m/sec2√Hz)
Intrinsic noise 76 nm/sec (152 µV) for 0.033 – 50 Hz bandwidth
Connector type 10-pin PC-10 multipurpose connector SMA-A for active/passive GPS/GLONASS antenna SMA-A for Wi-Fi antenna Amphenol Straight Panel Mount USB-B
Delivery set 1.5 m USB A-B cable 3 m GPS antenna Wi-Fi antenna SMA A/B adapter 32 GB microSD card installed 0.6 m PC-10 USB cable 1.5 m Analogue cable
Weight 5.3 kg
Dimensions 180 x 195 mm (diameter x height, including handle)
Case Aluminum
Data transfer USB 2.0, Wi-Fi
Data storage 32 Gb (flash)
Inbuilt sensors for device health monitoring Temperature, supply voltage
ADC noise performance 20.4 ENOB at gain = 1
GNSS timing accuracy < 1µs
ADC sampling rate 1, 10, 50, 100, 250, 500, 1000 Hz
GNSS receiver GPS / GLONASS
Data recording mode Continuous, Schedule
Gain coefficients 1, 2, 4, 8, 12
Data recording format Internal binary, miniSeed, SEG converters provided
ADC sampling rate 24 bit