NDAS-8224 is a 24-bit autonomous submerged digital seismic station. It contains a high-sensitive 3-component MTSS-2003 seismic sensor and a digital system NDAS. The station has a high dynamic range, low self-noise and low power consumption.
The system is mostly designed for seismic exploration and surveys under water down to 100 meters. The housing-free version – ADC module NDAS – is designed for integration into another system for underwater applications.
The main advantage of this seismic station is its ability to operate in any orientation. Standard recording endurance is 15 - 30 days.
Characteristics Delivery and warranty
|Frequency range||1 Hz - 300 Hz|
|Sensitivity||250 V / (m/sec)|
|Clip level||30 mm/sec|
|Dynamic range||110 dB at 1 Hz|
|Sensitivity axes||Vertical, North, East|
|Supply voltage||12 V Nominal (10.5-16 V permissible)|
|Power consumption||<1200 mW|
|Maximum installation tilt||Any|
|ADC sampling rate||1, 10, 50, 100, 125, 250, 500, 1000 Hz|
|Dimensions||Dual housing: diameter 108 mm, height 380 mm each|
|ADC resolution||24 bit|
|Reference generator stability||5 ppb - OCXO underwater version|
|ADC noise performance||20.4 ENOB at gain = 1|
|Number of channels||4|
|Data recording mode||Continuous, Schedule|
|Data recording format||Internal binary, miniSeed, SEG converters provided|
|Data storage||microSD 32 GB|
|Data transfer||USB 2.0, Wi-Fi|
|Inbuilt sensors for orientation determination||3-axis MEMS accelerometer, 3-axis magnetic sensor|