Simrad ES70 - INSTALLATION REV A Installation Manual page 137

Use mounting and clamping rings whenever provided
Circular transducers may be provided with mounting and clamping rings, or with
drawings to allow for local production of these. The mounting ring is welded to the
hole in the towed array, while the clamping ring fits around the edge of the transducer
body. Bolts through the clamping ring into the mounting ring will then secure the
transducer between them. Note that all split-beam transducers use direction guides to
allow correct mounting.
Smooth surface is important
Mounting screws or bolts must not be extruding from the vehicle. Ensure that the surface
of the transducer face, the vehicle, the vehicle plating and putty around the transducer
is as even and smooth as possible. Obstructions on these surfaces will create problems
with the water flow.
Small transducer
The illustration below shows the installation principle of a small circular transducer
using clamping and mounting rings.
Figure 36 Installation principle, small transducer
A Mounting ring
B Hull plating on towed body
Transducer
C
Clamping ring
D
Bolt
E
343522/A
Transducer Installation
135