Transducer Blister - Simrad TRANSDUCER - INSTALLATION GENERIC REV H Installation Manual

Simrad Echo sounder transducers

Transducer blister

16
With a transducer with circular housing, one recommended
installation method is by using a blister. The transducer blister
must be designed and manufactured by the installation shipyard
to fit the vessel's size and hull shape.
Mounting and clamping rings
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
transducer blister, 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 several transducers use direction guides to allow correct
mounting.
Smooth surface
Mounting screws or bolts must not be extruding from the
transducer blister. Ensure that the surface of the transducer face,
the blister, the hull plating and putty around the transducer is as
even and smooth as possible. Obstructions on these surfaces will
create problems with turbulant flow.
Horizontal support bar
Large diameter transducers must be fitted with a horizontal
support bar. This bar can be secured to the mounting ring using
threaded rods.
851-160164/H