WÄRTSILÄ LAZ 5100, Техническое руководство

Страница: 67 / 79

Technical Manual LAZ 5100 / ES 5100
INSTALLATION, CARE AND MAINTENANCE
TH 52 603 8001 EN Rev.: S Technical Manual LAZ 5100 / ES 5100 5-5
5.1.3 Transducer Types
The transducers, listed in the table are samples, further types are available and can
be connected to ELAC echo sounders.
Transducer
Type
Frequency Manufacturer
Electrical
Power
Maximum
Cable Length
(2x1.5mm
2
)
Maximum
Water Depth
LSE 131 30 kHz ELAC Nautik 1000 Watt 600 m 2000 m
LSE 132 30 kHz ELAC Nautik 450 Watt 600 m 1000 m
LSE 297 50 kHz ELAC Nautik 200 Watt 400 m 600 m
LSE 133 50 kHz ELAC Nautik 450 Watt 600 m 1000 m
LSE 328 100 kHz SAM 250 Watt 200 m 250 – 300 m
LSE 329 100 kHz ELAC Nautik 200 Watt 200 m 250 – 300 m
LSE 148 100 kHz ELAC Nautik 450 Watt 200 m 350 – 400 m
LSE 313 200 kHz ELAC Nautik 200 Watt 150 m 250 – 300 m
LSE 135 200 kHz ELAC Nautik 250 Watt 150 m 200 – 250 m
Tab. 9: Transducer type
The typical maximum water-depths are valid for transducer installation with
direct transmitting into the water.
For cable lengths longer than the ones mentioned in the table, the electrical
power of the echo sounder has to be increased according to manufacturer's
release.
If acoustic windows are installed, the performance can decrease drastically, due to the
losses in the passage of the acoustic beam through the fluid between transducer
surface and acoustic window and the acoustic window itself.
The losses are minimal, if the distance between transducer surface and acoustic
window is lambda/2 and the acoustic window is parallel to the transducer surface.
For frequencies higher than 50 kHz, acoustic windows generate high losses of
performance and should be avoided.