« Acoustically mark an object or an underwater site, so as to be able to locate it »
The marker is a system that emits ultra-sonic waves continuously and at a given frequency, fixed on the object or site to be located. The recurrence as well as the duration of the emission is constant.
The acoustic marker is composed of : - An acoustic head - A hydrostatic sensor enabling automatic activation in relation to immersion level - Adapted electronics - Battery container.
Applications
- Oceanography - Marine transport - Dredging - Seismology - Offshore - Following polluting spills, etc.
Advantages
- Easy to use - Sturdy - Low purchase cost
Characteristics
Dimensions
L=180mm et Diam = 45 mm
Weight
< 500 g
Sound level
> 150 dB
Autonomy Supply
30 days minimum 4 AA or LR06 type batteries
Transmission frequency Transmission duration Recurrence
38 kHz +/- 1 kHz 30 ms +/- 6 ms 2 s +/- 0.5 s
Maximum submersion
120 m
Functions automatically at a depth of > 6 m Stops automatically when out of water
A subsidiary of Thales Underwater Systems