CME-4311-BH150  is an analog, 2 component, low noise broadband borehole seismometer. It permits installations to boreholes under water or in dry conditions up to 250 m depth and is suitable for permanent and long term measurements. It comes with a hermetic connector and lifting ring. The unit does not require maintenance, locking and centering after installation.

• Frequency Range: 0.016 Hz (60 Sec) – 50 Hz
• Sensitivity: 2000 V / (m/sec)
• Clip Level: 5 mm / Sec
• Noise Level (1 Hz): 2.8 nm/Sec (5.6 uV)
• Dynamic Range: 122 dB 
• High Performance
• Works Up To 250 m Depth