Seismometer CME-4311

The compact broadband low-noise 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.

Characteristics Delivery and warranty

Frequency range 0.016 Hz (60 sec) - 50 Hz
Sensitivity 2000 V / (m/sec)
Clip level ± 10V (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 -12°C - +55°C - standard range
-40°C - +55°C - extended range
Maximum installation tilt ±15°
Dimensions 180 x 140 mm (dimensions including handle, diameter x height)
Weight 4.6 kg
Case material Aluminum
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 pigtail cable, bubble level, handle, three feet