4HRUHULLTRIDUCER
Frequency: 50/200 kHz
Beamwidth: 45°/15°
Cable length: 10m (32’)
Speed, temperature + depth
information.
Ref. No. 179.0401.009
Housing: Bronze
Ref. No. 179.0401.010
Housing: Stainless steel
$ETERMININGTHEPOSITIONFORTHETRANSDUCER
The performance of the echosounder under actual operating conditions
will be largely dependent upon the location of the transducer and how it
has been installed. Careful consideration, therefore, must be given to se-
lecting the mounting location and on deciding the method of installation
that best suits the vessel.
Air bubbles and turbulence caused by the vessel’s movement through the
water will seriously degrade the transducer’s performance. Therefore the
transducer should be located well clear of any water intake or discharge
line and also clear of any projection along the hull line which might dis-
turb the smooth flow of water. It is of profound importance for good per-
formance that the water flowing over the transducer be free of bubbles
and aeration. If the transducer face is clean but the performance degrades
with increasing vessel speed, then aeration of the water flowing under
the transducer may be the cause of the poor performance. Due to the
varying design of ship’s hulls and different operating speeds, there can
be great variation in the amount of air bubbles which are carried beneath
the hull. The bubbles tend to be carried close to the hull as they pass aft.
#%-+)))NSTALLATIONANDSERVICE #HAPTER
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