Kongsberg Simrad SN90, Installation Manual

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Installation summary
The installation of the transducer is a key task for successful installation of the SN90
Purse Seine and Trawl Sonar. Not only will you need to penetrate the vessel’s hull, you
must also to select a physical location for maximum performance and minimum acoustic
and electric noise.
Prerequisites
To get a full overview of the installation, you need all relevant vessel drawings. You
also need the drawings provided for the SN90 transducer.
Context
The outline dimensions of the SN90 transducer and the relevant installation items are
found in the
Drawing file chapter in this manual. The source drawings (normally in
AutoCad format) can be downloaded from our website.
• http://www.simrad.com/sn90
A transducer must always be handled as a delicate item. Wrongful actions may damage
the transducer beyond repair. Observe these transducer handling rules:
• Do not activate the transducer when it is out of the water.
•
Do not
handle the transducer roughly, avoid impacts.
• Do not expose the transducer to direct sunlight or excessive heat.
• Do not use high pressure water, sand blasting, metal tools or strong solvents to clean
the transducer face.
• Do not damage the outer protective skin on the transducer face.
• Do not lift the transducer by the cables.
• Do not step on the transducer cables.
•
Do not
damage the transducer cables, avoid sharp objects.
Procedure
1 Based on the intended use of the SN90 system, determine the physical location of
the transducer, and the required installation angles.
Observe the installation principles.
2 Decide which method to be used for the transducer cables:
• "Wet" conduit
• "Dry" conduit
• Sealing plate
Installing the transducer