Kongsberg EM 122, Installation Manual

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EM 122
Casings
While the transducer elements are mounted into the frames, the frames require casings.
One casing is required for each frame.
The casings are not a part of the system delivery. They must therefore both be provided
(or manufactured) and installed by the installation shipyard.
Logistics and references
• Logistics and references safety - Refer to the general safety procedures. Note that
the units are heavy!
•
Personnel
- Trained mechanical workers/welders
•
Ship location
- Dry dock
•
Special tools
- None
• Drawings - Refer to the following drawings in the Drawing file on page 109.
Procedure
How to mount the casings
1 Manufacture the casings according the production drawings.
2 Alter the drawings and the design as required to fit the vessel and the chosen
installation method.
3
Install the casings under the hull in either the blister, the gondola or into the hull.
Mounting frames
The mounting frames are designed to house the individual transmit and receive
transducer elements. The elements are mounted next to each other to make up the arrays.
The following mounting frames are available
• TX mounting frame for a 0.5 degree system
• TX mounting frame for a 1 degree system
• TX mounting frame for a 2 degrees system
– These TX frames are basically identical, but they differ in physical length.
• RX mounting frame for a 1 degree system
• RX mounting frame for a 2 degrees system
• RX mounting frame for a 4 degrees system
– These RX frames are also basically identical, but they differ in physical length
The RX frames are additionally equipped with baffle plates. The baffle plates are
used to deaden noise attenuation on bottom side of the RX mounting frames.
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