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Tokyo Sokushin TOBS-24N Ocean Bottom Seismograph

Product: made in Japan
Manufacturer: Tokyo Sokushin
Model: TOBS-24N

Self-floating ocean bottom seismograph suitable for the observation of ocean crust structure and natural earthquake


3 Months of Operation at the 6000m deep Seabed
24bit: 4CH AD Converter, 40Gbyte H.D.
Tri-axial Velocity Sensor and Hydro-phone

Specification

Super Sonic Controlled   TOBS-24N

High Pressure Vessel Radio beacon
Out-side dimension 43.2cm Form A1
Inner dimension 40.4cm Power 0.1 to 0.2W
Maximum pressure 6700m Frequency 41 to 44MHz
Hard-hat 55.9cm (W), 48.3cm (H) Cover range 20km
Seismometers Recorder
Component Tri-axial Input CH 4CH
Function Velocity Full scale ±4.2V (0dB)
Sensibility 0.41V / (cm/s) Sampling 50, 100, 200, 400Hz
Resonant frequency 4.5Hz Resolution 24bit
Hydro-phone Triggering Threshold, Time window, Ext.
Sensibility &Response 2 to 15kHz (-168dB)1V / μPa 10 to 5kHz (-168 ± 1dB) Timing accuracy ±5×10-8 / sec.
Pre-Amp (4ch each) Gain 0, 20, 40, 60dB
Anchor & Stand Low Bass fc: 220Hz,

Cut off.18dB / Oct

Dimension 65cm (W), 25cm (H)
Weight Approx.35kg Media 40Gbyte Hard Disk
Acoustic Trans-ponder Power consumption

(DC: 6V~8V)

3mA at Stand-by 80mA at working
Receiver 8.0 to 11.0kHz
Channels 3channels Internal Battery
Transmitter 8.3 to 10.7kHz Battery type Lithium Battery
Flash-light Capacity 30Ah
Light power 0.1joule Voltage / Quantity 3.9V / 20batteries
Light source Arc of xenon Release System of Anchor
Light interval 2sec. System Electro-corrosion method

Onboard Instruments

TMC-8200 GPS Precision
Clock Calibrator

OBP-02 OBS Parameter
Setting Unit

MODEL-LC Control Unit

Constitution

The specification may change without notification because of the proved product.

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