Simrad Simrad SP70, Руководство по установке

Страница: 42 / 230

Simrad SP70
26
851-164336 / D
2.3 Sonar room requirements
Size
The sonar room must be dimensioned to house both the Hull and
the Transceiver Unit. This is due to the limited length of the
flexible hose protected cabling (approximately 3.5 m) connecting
the two.
A well designed sonar room reduces the risk of corrosion and
simplifies maintenance increasing system reliability. The sonar
room should not be unnecessarily obstructed by girders, pipes etc.
which might cause installation problems or impede maintenance.
→
Refer to figure 3 on page 28 for an example of a sonar room
arrangement.
Access hatches
The sonar room must be accessible under all conditions at sea or
at a berth. All doors or hatches should be designed so that the
equipment can be removed without being disassembled.
Lifting
An attachment point, rated at a minimum of two tons, for
supporting a lifting device should be located above the Hull Unit.
This permanently installed fixture will facilitate Trunk and Hull
Unit mounting and also may be used for service of the equipment
in the future.
Heating
The sonar room should be equipped with heater, dimensioned to
maintain the equipment within its environmental tolerances (at
least 1000 W), installed close to the deck. Heating is also an
effective method for reducing humidity.
→
Refer to page 157 for more information concerning environmental
tolerances.
Insulation
Bulkheads must be insulated and provided with an interior wall to
the deck. The insulation should be the minimum equivalent of 50
mm of rock-wool. In addition, piping passing through the space
prone to condensation must be insulated.
Ventilation
The sonar room should be connected to the vessel’s ventilation
system. If this is not possible, two 3-inch vents must be provided
from the sonar room to the main deck.