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TRANSDUCERS MODELS

TYPES OF TRANSDUCERS

Transom transducers
Transom transducers are installed on the stern of the vessel in the water.
They are made of plastic and are generally less expensive than other transducers.
Today, compared to a few years ago, we have a multitude of transducers, based on the required functionality.
from the depth sounder.
We can therefore divide them into standard and all-in-one fishfinder transducers.
The first ones are both dual frequency and Chirp, with power up to 1kW (not to underestimate the considerable size...); while
the all in one, in addition to having the eco fishfinder function, also have Down Vision (high definition view of the seabed)
and Side Vision (always a lateral view of the seabed).
Transom transducers are recommended for planing vessels under 30 feet (9 meters), such as small boats
and motorboats with outboard and inboard jet engines.
It is NOT recommended for large inboard boats or boats with twin propellers because propeller noise can decrease performance.
Furthermore, it is not recommended to use it for high-speed operation.
Particular attention must be paid to the installation, so always install them flush with the hull, if not better a centimetre or two below the hull and
especially to the right if the propeller is right-handed or to the left if it is left-handed.
       










Internal transducers
The internal transducer is fixed directly (via epoxy resin) inside the hull.
The internal transducer is recommended for fiberglass hulls and should not be used on boats
made of wood, aluminum or sandwich hulls (with balsa, termanto, expanded core) in which they could be
air bubbles are present, as some parts of the fiberglass hulls are often reinforced with a balsa core or
expanded, they are poor conductors of signals.
Any wood, metal, or balsa reinforcing material must be removed from inside the hull.
Since the hull absorbs acoustic energy, the passage of the signal through the fiberglass reduces the performance of the
sensor.

In other words, depth reading or fish detection with internal transducers is not as effective as with through-hull transducers or
from the stern. Also make sure there is no reinforcing or buoyant material, or air pockets between the inner and outer skin of the hull.

Advantages
No holes in the hull
No obstruction in the water
Excellent performance at high speeds
Minimal maintenance
Disadvantages
Reduced fish detection
Used only on fiberglass hulls








Through-beam transducers
Thru-hull transducers are mounted through a hole drilled in the bottom of the hull and extend directly into the water.
They generally provide the best performance.
Recommended for displacement hulls and boats with inboard shaft engines.
To ensure proper alignment these transducers must be installed with a fairing block
which in addition to improving the performance of the fishfinder
all speeds, allows for better adhesion to the hull and significantly reduces the possibility of water infiltration.
Thru-hull transducers should be installed in front of the propeller, keel, or anything that might cause turbulence.

They must always be covered by water and with the minimum keel angle.





Transducers with inclined sensor
Tilt-sensor transducers are mounted through a hole drilled in the bottom of the vessel and protrude
directly into the water. They offer performance similar to through-hull transducers.
They are mounted directly on the hull and, unlike thru-hull transducers, do not require a fairing block.
The sensor inside the transducer acts as a leveler and, working with the keel angle of the hull, ensures
that the transducer beam is directed downwards.
These transducers are available in two versions: with sensor inclined at 12° and 20°. The version with sensor
inclined at 12º is used when the keel angle of the hull is between 8º and 15º. The version with
20º tilt sensor is used when the hull keel angle is between 16º and 24º.

Transducers with tilted sensors must be installed in front of the propeller, keel or anything that can cause turbulence.
They must always be covered by water and with the correct keel angle.



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50-200KHZ TRANSDUCERS

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CHIRP TRANSDUCERS
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