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IStandard features include
a Safe Working Load of 2,500Kg and a spring-assisted release
mechanism. This type of release mechanism was originally
developed by Sonardyne for navigation transponders supplied
to the offshore industry of which there are now many thousands
reliably in service around the world.
Excellent corrosion resistance
is achieved by using Super Duplex stainless steel, Ferralium
255. In addition, the Heavy Load DORT is available in different
housing lengths and is mechanically compatible with other
standard release transponders on the market thus simplifying
mechanical integration.
Heavy Load DORTs are controlled
using frequency band specific Lightweight Command Units
(LCU) which comprise of a dunking transducer connected to
either a splash-proof PSION, PC running supplied software
or terminal program. For security of operation, a special
coding system provides protection against accidental release
by noise and acoustic transmissions from other vessels.
Technical Specifications
:-
| Feature |
Type 7835 |
| Depth Rating |
7,000 Metres |
| Operating Frequency |
LF (7.5–15kHz)
|
| Transducer Beamshape |
Hemispherical |
| Transmit Source Level (dB
re 1µPa @1m) |
190dB Alkaline, 184dB Lithium |
| Receive Threshold (dB re
1µPa) |
85dB |
| Safe Working Load (4:1) |
2,500kg |
Max Safe Release Load
|
2,500kg |
| Breaking Load |
10,000kg |
| Battery Life (Listening) |
Alkaline
Lithium Long-life
Lithium Extra Long-life
Lithium
9 months 24 months 36
months 108
months |
Shelf Life (Battery Disconnected)
Stored at 25ºC |
Alkaline Lithium
Long-life Lithium Extra
Long-life Lithium
24 months 84 months
120 months -
|
| Mechanical Construction |
Ferralium 255 |
| Dimensions (LxDia) |
Standard Housing 832mm
(32.75”) x 145mm (5.7”)
Short Housing 693mm
(27.3”) x 145mm (5.7”)
|
| Weight in Air
Standard Housing
Short Housing |
27kg
24kg |
| Deck Unit |
Type 7667 LF Lightweight Command Unit
|
Features:-
- Safe Working Load of 2½ Tonnes
- 7,000 Metre depth rated
- Highly reliable, proven release mechanism
- Up to 9 years deployment with extra
long life lithium battery
- Excellent corrosion resistance - Ferralium
255
- Compact and rugged design
- Mechanically compatible with other release
transponders
- Choice of housing lengths to suit deployment
scenario
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