Simrad ES 18 - DATASHEET REV C, Руководство по установке

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52
404770/B
Mounting screws or bolts must not be extruding from the transducer or the plating
immediately around it.
Note
Obstructions on these surfaces will create problems with turbulent flow, and may cause
noise.
Related topics
Transducer installation principles, page 47
Transducer installation in a flush mounted
steel tank
The transducer can be flush mounted on large vessels, where the size of the hull prevents
air bubbles from reaching down to the transducer face. Flush mounting can also be
used on vessels operating in shallow harbours or waters, where a protruding blister
can not be accepted.
The standard method for flush mounting on a steel vessel is to weld a steel tank inside
the hull, and mount the transducer into this tank.
This can be accomplished by air release through a steel tube. This tube should be
extended either to open air 1.5 m above the water line, or to the water outside the hull at
a point higher than the tank interior.
If the tube is extended to open air, drainage must be provided with a controlled leak
through the transducer flange or by means of a separate hole in the tank bottom.
Example
A
Steel tank
B
Water
C Drainage hole
D
Cable service loop
E
Steel tube for air
outlet (must reach
above water line)
F
Bushing
G Cable in steel
conduit
H
Mounting ring (may
be part of the steel
tank)
Simrad ES18 Installation Manual