Rotational seismometer METR-13
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 | 0.033 Hz (30 sec) - 100 Hz 1 Hz - 150 Hz or by customer specification |
| 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 orthogonal |
| Supply voltage | 12 V Nominal (10.5-16 V permissible) |
| Power consumption | 24 mA nominal |
| Temperature range | -12°C - +55°C - standard range -40°C - +55°C - extended range |
| Maximum installation tilt | Any |
| Dimensions | 120 x 120 x 102 mm |
| Weight | 1.5 kg |
| Case material | Aluminum |
| Output impedance | 500 Ohm |
| Cold-start time | ~15 min depending on low-frequency cut-off |
| Maximum output swing | ±5 V, single-ended output |