82
381298/C
Transducer cables installation principles
Topics
Three suggested methods, page 82
Installing the transducer cables in "wet" conduit, page 83
Installing the transducer cables in a "dry" conduit, page 85
Installing the transducer cables using a sealing plate, page 87
Three suggested methods
The physical installation of the SN90 transducer cables is basically made in the same
way as for normal echo sounder transducers.
Independent of which way the transducer is facing, and which installation angles that
have been chosen, the transducer cables must penetrate the hull plating. How to do this
in a safe manner must be determined by the installation shipyard. We suggest using
one of the following methods.
•
"Wet" conduit
A steel conduit is welded to the hull plating immediately over the transducer. The
conduit must maintain the watertight integrity of the hull. The steel conduit is
terminated above the freeboard deck, and the opening is secured with multi-diameter
cable sealing.
This "wet conduit" installation principle allows you to use an SN90 or SN91
transducer with the transceiver connector readily mounted to the cable.
•
"Dry" conduit
A sealing plate is welded to the hull plating, or to a small trunk. This sealing plate
(and trunk) must maintain the watertight integrity of the hull. A steel conduit is
welded to the top of the sealing plate, and terminated above the freeboard deck.
This installation principle requires that you use a SN92 or SN93 transducer without
the transceiver connector readily mounted. On these transducers, each cable is fitted
with a cable gland designed for the sealing plate.
•
Sealing plate
A sealing plate is welded to the hull plating, or to a small trunk. This sealing plate
(and trunk) must maintain the watertight integrity of the hull. The Transceiver Unit
can now be placed closed to the sealing plate. Both the transceiver and the sealing
plate must be placed in a watertight compartment.
This installation principle requires that you use a SN92 or SN93 transducer without
the transceiver connector readily mounted. On these transducers, each cable is fitted
with a cable gland designed for the sealing plate.
Simrad SN90
Содержание Simrad SN90
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