Low-noise broadband seismometer CME-4311
The three-component low-noise broadband seismometer CME-4311 is well suited both for permanent and portable installations.
This easy-to-install, very reliable instrument does not require any maintenance, mass locking and centering. The instrument offers the cost-effective solution for installations with the noise level close to a Low-Noise Model.
1-component (vertical or horizontal) version of the CME-4311 model is available.
The CME-4311 frequency characteristic with the poles and zeros presentation is available at the link on the website of Incorporated Research Institutions for Seismology (IRIS).
Characteristics Delivery and warranty
| Frequency range | 0.016 Hz (60 sec) - 50 Hz |
| Sensitivity | 2000 V/(m/sec) |
| Clip level | ±10 V (5 mm/sec) |
| Self noise at 1 Hz | 2.8 nm/sec (5.6 µV) |
| Dynamic range | 122 dB |
| Nonlinearity | 0.5 % |
| Sensitivity axes | Vertical, North, East |
| Supply voltage | 12 - 24 V Nominal (10.5 - 30 V permissible) 12 V Nominal (9 - 16 V permissible) |
| Power consumption | 28 mA 8 mA (low power) |
| Temperature range | -40...+55°C |
| Maximum installation tilt | ±15° |
| Output impedance | 1000 Ohm |
| Cold-start time | 15-45 min. |
| Leveling, mass locking | none required |
| Case connectors | Russian PC-10TB type, 10 pin |
| Delivery set | 1.5 meter cable, bubble level, handle, three feet |
| Case material | Aluminum |
| Dimensions | 180 x 140 mm (dimensions including handle, diameter x height) |
| Weight | 4.6 kg |