Seismometer CME-4311-BH150

The CME4311-BH150 model, a 3-component broadband low-noise seismometer, is designed for permanent or long term installation in boreholes down to 250 meters depth both dry and flooded. The sensor is equipped with a hermetic connector and a lifting ring for going in hole and subsequent surfacing. The instrument is very rugged and does not require any adjustment or mass-centering.

Characteristics Delivery and warranty

Sensitivity axes Vertical, North, East
Sensitivity 2000 V / (m/sec)
Clip level 5 mm/sec
Frequency range 0.016 (60 sec) - 50 Hz
or by customer specification
Maximum output swing ±10 V, differential output
Temperature range -12°C - +55°C - standard range
-40°C - +55°C - extended range
Supply voltage 10.5-30 V DC, single-ended. Nominal value – 12 V
Power consumption 27mA – standard version
Cold-start time 20 - 120 min depending on low-frequency cut-off
Maximum installation tilt ±15°
Noise performance -155 dB (relative to 1 m/sec2√Hz)
Weight 7.5 kg
Dimensions 105 x 505 mm (diameter x height including lifting ring)
Case Stainless steel, waterproof, depth down to 250 m