Rotational seismometer METR-03

The METR-03/METR-01 rotational seismometers provide new measuring means and data channels in engineering geophysics, exploration seismology, rotational seismic surveys, seismic monitoring of high-rise buildings and constructions (bridges, hydroelectric dams and so on), security systems based on the seismic area control and many other applications. 

The sensors are very rugged, does not require any maintenance and well-suited for portable applications and field tests as well as for permanent installations. The one-component (METR-01) and three-component (METR-03) modifications are available.

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 -122 dB or 8*10^-7 rad/sec2√Hz
Sensitivity axes 3 orthogonal
Supply voltage 12 V Nominal (10.5 - 16 V permissible)
Power consumption 24 mA nominal
Temperature range -40...+55°C
Maximum installation tilt Any
Dimensions 120 х 120 х 110 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