Installation manual

Simrad PI54

851-165187 / Rev.A

Transducer blister

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 sixe and hull shape.

Mounting and clamping rings

Circular transducers may be provided with mounting a nd

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 t ransducer between them.

Note that several transducers use direction guides to allow

correct mounting.

Inclination of the transducer face

Incline the transducer face approximately 1-2 degrees, so that

the flowing water meets it directly. This assures laminar water

flow.

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.