Low-noise force-balance broadband digital seismometer CME-6111RT
CME-6111RT is a low-noise force-balance broadband digital seismometer.
The SeedLink v4 protocol with a 100 msec package is used for telemetry.
The data are stored in a file on a local memory card in the miniSEED v3, binary and text formats.
The system is clocked with a high precision quartz that is being corrected with the use of external sources of GPS/GLONASS accurate time signals as well as via Ethernet over NTP and PTP protocols.
Characteristics Delivery and warranty
| 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, 3 leveling feet, technical passport |
| 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 | 2.0 W nominal / 4.0 W peak |
| Temperature range | -40...+55°C |
| Gain coefficients | 1, 2, 4, 8, 12 |
| Case connectors | 7-pin power connector, USB-B high-speed USB port, RJ45 – Ethernet |
| Maximum installation tilt | ±15° |
| ADC sampling rate | 1, 5, 10, 25, 50, 100, 125, 250, 500, 1000 Hz |
| ADC resolution | 24 bit |
| ADC noise performance | 22 bits noise-free resolution at 100 sps |
| Data recording mode | continuous, schedule |
| Data recording format | binary, ASCII, miniSEED v3 |
| Data storage | microSD 32 GB, option of up to 512 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 |
| GNSS receiver | GPS / GLONASS |
| GNSS timing accuracy | < 1µs |
| Case material | Aluminum, stainless steel |
| Dimensions | 204 x 250 mm (diameter x height with handle) |
| Weight | 9.2 kg |