Main characteristics of Marine seismic nodes:

Work normally at any Angle; 45 days of normal work; Charging is completed within 24 hours;

Size of L-OBN: diameter 245 mm * height 132 mm; Weight: 12kg;

Lucky-OBN system composition and technical specifications:

Collector: 4 channels;

Universal type seismometer: BH-20MT-OMNI or GS-ONE OMNI;

Hydrophone: self-made;

ADC resolution: 24 bits;

ADC conversion mode: Delta-Sigma conversion;

Sampling interval: 0.25, 0.5, 1, 2, 4 ms;

Gain: 0, 6, 12, 18, 24, 30, 36 dB;

Maximum input signal: 1.8V (RMS);

Equivalent input noise: 0.08-3 μV (RMS);

Gain accuracy: ≤ 1%;

Real-time dynamic range: 126-0dB gain;

Flash memory: 32 GB;

Continuous working time: 45 days;

Seismometer technical specifications:

Natural frequency: 20 Hz;

Distortion (in any direction) < 0.5%;

Coil resistance: 2720Ω;

Open-loop sensitivity: 28 V/M/S;

Sensitivity (70% damping) : 15 v/m/s

Trini: 0.7;

Hydrophone technical specifications:

Capacity (at 25°C temperature, pressure 1 atm) ≥9000pf;

Sensitivity: 6 v/bar

(2) Control containers

Main function

Recharging batteries at Marine seismic nodes;

Set parameters for Marine seismic nodes;

Download recorded data from the Marine seismic node;

Technical specification

Up to 512 Marine seismic nodes are used together;

Different types of power supply (220V, 380V, 440V) can be charged;

Key features of the Lucky OBN system:

The Marine seismic node can operate onshore and underwater, with a maximum operating water depth of 500 meters;

Complete the repreparation within a maximum of 24 hours;

Operating temperature between -10℃ and +50℃;