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 |