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+7 812 339-94-84
info@mtcgeo.com
info@mtcgeo.com
CRAB OBN System
About complex
Mobile seismic system for marine surveys and monitoring based on 4C OBN CRAB, which are controlled by the system’s lab containers.
Specialized laboratories based on standard shipping containers are used for OBN maintenance (battery charging, control and data downloading).
Can be operated onshore or at depth up to 500 meters
Complex features
Preparation is 20 hours max
Operating temperature from -10° to +50° C
OBN CRAB
Composition of the CRAB OBN
Autonomous operation during 45 days
Features
Advanced self-diagnostic system
Battery recharging time is 20 hours
Dimensions 273 X 245 X 132 mm
Characteristics
Weight in air 12,5 kg
Technical Specifications CRAB
4 channels:
- 3 Orthogonal oriented Geophones GS-One OMNI
- 1 Hydrophone
- 3 Orthogonal oriented Geophones GS-One OMNI
- 1 Hydrophone
Recording channels
0, 6, 12, 18, 24, 30, 36 дБ
Gain
2500 mV
Max input signal
0.87 mV (rms)
Equivalent input noise (2ms, 0dB)
125 dB
Dynamic Range
>92 dB
CMRR
>110 dB
Crossfeed
< -100 dB
THD
Self-noise test
SELF-DIAGNOSTIC
Gain accuracy
Hydrophone capacitance
Geophone impedance
Geophone impulse test
Crossfeed
Impulse test of the recording channels
Common-mode rejection ratio
Internal total harmonic distortion
24 bit, delta-sigma with sample interval 0.0625*, 0.125*, 0.25, 0.5, 1, 2, 4 ms
ADC
* For high-frequency modification (for engineering seismic)
Lab container
Composition of the CRAB OBN
Charging batteries
Objectives
Controlling
Downloading recorded data
Capacity up to 240 OBN (for 20-ft)
Characteristics
Different supply voltage (380V, 415V, 440V)
Download our solutions catalog for free
The catalog provides detailed, information about the company and our equipment
Ready to answer your questions
Contacts
Phone
E-mail
198035, St. Petersburg, st. Dvinskaya, 14A, room 1, office 70
Address
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