Low-noise force-balance broadband digital seismometer CME-6111ND
CME-6111ND is a low-noise force-balance broadband digital seismometer.
A bandwidth of up to 60 sec provides recording of the most remote seismic events.
This seismometer combines the low-noise molecular-electronic sensing element (transducer) and the electrodynamic force-balance that result in a very flat response over a wide frequency range, a high dynamic range and a greatly improved time and temperature stability of the parameters.
This model is very rugged and does not require any special means or procedures for transportation and installation. The only procedure to start the operation is to place the seismometer on a rigid horizontal surface, turn the power on and wait for several minutes.
This seismometer can be used in various applications such as seismic observatories, seismological surveys, seismic microzoning and passive broadband seismic exploration.
Click here for available downloads to operate CME-6111ND. If the FTP-connection fails, right-click to copy the link and open it with Windows Explorer.
Characteristics Delivery and warranty
| Frequency range | 0.016 Hz (60 sec) - 50 Hz |
| Sensitivity | 2000 V/(m/sec) |
| Clip level | ±20 V or ±10 mm/sec |
| Self noise at 1 Hz | 1.4 nm/sec (2.8 µV) |
| Dynamic range | 137 dB at 1 Hz |
| Nonlinearity | 0.2 % |
| Sensitivity axes | Vertical, North, East |
| Supply voltage | 12 - 24 V Nominal (9 - 36 V permissible) |
| Power consumption | 1200 mW nominal / 3250 mW peak |
| Temperature range | -40...+55°C |
| Maximum installation tilt | ±15° |
| Case connectors | MS-3102 10-pin multipurpose male connector, SMA-M for an active/passive GPS antenna, SMA-M for Wi-Fi antenna, USB-B high-speed USB port |
| Gain coefficients | 1, 2, 4, 8, 12 |
| ADC sampling rate | 1, 5, 10, 25, 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 | Main supply voltage, temperature, compass, tilt |
| Cold-start time | 5-15 min |
| Leveling, mass locking | none required |
| Delivery set | 1.5 meter 10-pin connector power cable with pigtails, 1.5 meter 10-pin/USB-A+power pigtails connectors digital cable, digital USB A/B cable, Wi-Fi SMA-M antenna for installation on the case, 5 m cable GPS antenna, 3 leveling feet, technical passport |
| GNSS receiver | GPS / GLONASS |
| GNSS timing accuracy | < 1µs |
| Case material | Aluminum, stainless steel |
| Dimensions | 204 x 238 mm (diameter x height with handle) |
| Weight | 8.9 kg |