Digital seismometer CME-6111ND
CME-6111ND is a digital 3-component low-noise broadband seismometer with a force feedback. 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 feedback 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.
Characteristics Delivery and warranty
| Frequency range | 0.016 Hz (60 sec) - 50 Hz |
| Sensitivity | 2000 V / (m/sec) |
| Clip level | 7.5 mm/sec |
| Self noise at 1 Hz | 1.4 nm/sec (2.8 µV) |
| Dynamic range | 137 dB at 1 Hz |
| Sensitivity axes | Vertical, North, East |
| Supply voltage | 12 V Nominal (9-16 V permissible) |
| Power consumption | < 1 W |
| Temperature range | -40°C - +85°C - industrial SD-card |
| Maximum installation tilt | ±15° |
| Case connectors | 10-pin PC-10 multipurpose Amphenol Mil std connector, SMA-A for active/passive GPS/GLONASS antenna, SMA-A for Wi-Fi antenna, Amphenol Straight Panel Mount USB-B |
| ADC sampling rate | 1, 10, 50, 100, 125, 250, 500, 1000 Hz |
| ADC resolution | 24 bit |
| Dimensions | 204 x 238 mm (diameter x height with handle) |
| ADC noise performance | 22 bits noise-free resolution at 100 sps |
| Weight | 7.8 kg |
| Gain coefficients | 1, 2, 4, 8, 12 |
| Case material | Aluminum, stainless steel |
| 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 | -50 dB |
| Cold-start time | 5-15 min |
| Leveling, mass locking | none required |
| 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 |
| GNSS receiver | GPS / GLONASS |
| GNSS timing accuracy | < 1µs |