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GL-OBS60-BT2
Core equipment leads
Wide bandwidth, large dynamic range Core seismometers have low noise
Intelligent control
The attitude of the seafloor seismometer can be monitored It can be unlocked remotely
The working state of seismograph on the seabed can be inspected and tested regularly
Design leads
Fishing net design Protection against ocean currents Anti-marine biofouling design Independent control, domestic materials and components
OVERVIEW
Description
The shallow-sea broadband seafloor seismometer is a novel device designed for monitoring coastal marine environments. Comprising a seismometer, battery compartment, anti-drop mechanism, hydrophone, data transmission unit, and drag-resistant cover, this modular system features detachable components for easy maintenance. Users can select battery compartments with varying capacities based on operational duration requirements. The instrument demonstrates exceptional resistance to fishing trawling, ocean currents, and marine organism attachment. During deployment, the core seismometer establishes soft contact with the seabed through a baseplate, while the baseplate isolates external disturbances to ensure stable seismic data acquisition.
Fishing nets
There are many shallow sea fishing boats. In view of this situation, the product is designed in a round table shape, which can effectively avoid being dragged by fishing nets
and thus protect the normal recording data of seismometer.
Intelligent control
The equipment is equipped with a water acoustic communication device, which can remotely monitor the operating state of the equipment on the seabed: the lock swing can be remotely controlled to send lock swing command before recovery to protect the safety of the seismometer.
Just hit bottom
After the whole machine is immersed in the sea floor, the bottom touching mechanism releases the seismograph to make it closely coupled with the seabed, which effectively improves the accuracy of seismic data monitoring by the seismograph.
flexibility
The core seismograph is equipped with a high precision leveling adjustment mechanism, which can automatically level within 40° and can adapt to various complex seabed topography.
Technical Parameter
Seismometer (digital circuit power controlled)
●Bandwidth: 0. 0167Hz~80Hz;
●Sensitivity: 1000V/ (m/s) (both ends);
●Sensitivity error: better than ±3%
●Observational components: three-in-one;
●Dynamic range: ≥145dB;
DA
●Sampling rate: 50,100,200,500sps;
●Digital filter: linear phase FIR/minimum phase FIR;
time service
● Timing: GNSS timing, PPS signal calibration;
●Timing accuracy: ≤1us;
● Accuracy: ≤1×10-8/day; ≤ 5×10-7/year;
Analog signal generator (power controlled)
● DAC: 16-bit;
●Analog signal: pulse, sine wave optional, parameters can be configured;
●Start mode: timing, instruction;
levelling
●Constantly adjusted range: ±40°;
●Automatic leveling: built-in posture monitoring function, tilt automatically leveling;
Positional specificity
●Seeking precision: ±0.6°
data logging
● Storage medium: 32G (can record more than 6 months), expandable (multiple backup storage);
●Recording method: continuous waveform recording;
● Recording format: support MiniSEED, SEED format conversion; data communication interface
● Interface: LAN Ethernet;
● Protocol: TCP/IP; Auxiliary observation component (hydrophone)
●Sensitivity: -195dB;
●Band: 0. 1Hz-20kHz;
Overall performance
● Network (power controllable): supports real-time data
flow, supports multiple connections, FTP data download;
● Monitoring (power control): unlock the seismometer, adjust the zero and calibration, query the tilt Angle of the seismometer, adjust the leveling, and set the parameters;
●Working depth: 300 meters;
●Working temperature: -20℃-+60℃;
●Power supply voltage: 9-18V DC;
●Power supply: lithium battery pack (customizable)
●Power consumption: 1.2W;
●Working time: 2 months (customized according to user needs);
● Size: 1 2 0 0mm*750mm;
●Seismograph weight: 52kg (including battery)
