Japan, Tokyo Sokushin
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.