Rotational seismometer METR-11
The METR-13 and METR-11 models are quite similar to METR-01 and METR-03 but they are optimized for operation in the seismic exploration frequency range (1-150 Hz).
Characteristics Delivery and warranty
| Frequency range | 1 Гц - 50 Гц |
| Sensitivity | 50 V/(rad/sec) |
| Clip level | 0.1 rad/sec |
| Self noise at 1 Hz | 2*10^-7 rad/sec in 10–150 Hz passband |
| Sensitivity axes | 3 rotational orthogonal |
| Supply voltage | 12 V Nominal (10.5-16 V permissible) |
| Power consumption | 12 mA nominal |
| Temperature range | -40...+55°C |
| Maximum installation tilt | Any |
| Dimensions | 80 x 82 x 55 mm |
| Weight | 0.28 kg |
| Case material | Enduring plastic |
| Output impedance | 500 Ohm |
| Cold-start time | ~15 min depending on low-frequency cut-off |
| Maximum output swing | ±5 V, single-ended output |