Installation Accuracy Of Frames; Installing The Transducer Modules - Kongsberg EM 710 Installation Manual

4.6 Installing the transducer modules

164851/C
2 Alter the drawings and the design as required to fit the vessel
and the chosen installation method.
Mount the casings in the blister or integrated into the hull.
3
4 The mounting frames must be bolted onto the flat bars inside
the casing.
The number of flat bars depends on the length of the array.
Note
The mounting frames must be installed with correct
orientation!
5 The mounting frames must be bolted properly to the bars.
The frames are fastened by M12 hex cap screws. Use a
torque of approximately 74 Nm.
6 Check that the frames are mounted completely flat.
No point on the frames may deviate from the horizontal
plane with more than ± 0.2 mm.
Refer alignment on page 96 chapter for a proposed
measuring method.
7 Repeat the previous step until the alignment procedure has
been performed successfully.

4.5.3 Installation accuracy of frames

Check that the frames are mounted completely flat. This is very
important for the calibration of the system and the results of the
data information in SIS.
No point on the frames may deviate from the horizontal plane
with more than
± 0.2 mm. This is very important to follow.
To make the installation of the transducers easier, they are built
with standard modules
TX modules (type TX1 or TX2)
1
2 RX modules (type RX1 or RX2)
The two transducer module types are identified by their unique
registration numbers, which are moulded into the rear of the
element.
The transducer modules are assembled in the mounting frames
especially designed for this purpose. The modules are secured
with steel brackets, while the cables are pulled out on the side
of each array.
Transducer arrays
39