Furuno TZTL12F, Installation Manual

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1. MOUNTING
1-6
1.5 Installation of Transducers
1.5.1 How to mount a transducer through the hull
Transducer mounting location
The thru-hull mount transducer provides the best performance of all, since the
transducer protrudes from the hull and the effect of air bubbles and turbulence near
the hull skin is reduced. If your boat has a keel, the transducer should be at least 30
cm away from it.
The performance of this fish finder is directly related to the mounting location of the
transducer, especially for high-speed cruising. The installation should be planned in
advance, keeping the length of the transducer cable and the following factors in mind:
• Air bubbles and turbulence caused by movement of the boat seriously degrade the
sounding capability of the transducer. The transducer should, therefore, be located
in a position where water flow is the smoothest. Noise from the propellers also
adversely affects performance and the transducer should not be mounted nearby.
The lifting strakes are notorious for creating acoustic noise, and these must be
avoided by keeping the transducer inboard of them.
• The transducer must always remain submerged, even when the boat is rolling,
pitching or up on a plane at high speed.
• A practical choice would be somewhere between 1/3 and 1/2 of your boat's length
from the stern. For planing hulls, a practical location is generally rather far astern,
so that the transducer is always in water regardless of the planing attitude.
●
Within the wetted bottom area
●
Deadrise angle within 15°
●
Position 1/2 to 1/3 of the hull from stern.
●
15 to 30 cm off center line (inside first lifting
strakes.)
DEEP V
HULL
HIGH SPEED
V HULL
28
22
120
68
30
24
120
68
87
Unit: mm
520-5PSD
520-5MSD
BOW