17-297-01 re
v.
01
4/03
CAUTION
:
NEVER USE SOLVENTS
Cleaners, fuel, paint, sealants, and other products may
contain strong solvents, such as acetone, which attack
many plastics greatly reducing their strength.
Transom Mount Transducer
or
TRIDUCER
®
Multisensor
with Integral Release Bracket
Model P39
U. S. Patents: 4,555,938; 4,644,787; 5,606,253; Des. 334,335
Canadian Patent 1,233,341
Applications
•
Not
recommended for boats with large or twin screw inboard
engine(s).
• Good operation up to 44kn (50MPH)
• Vertically orients sound beam on hull with deadrise angle up to 30°
• Adjusts to transom angles from 2
°
–22
°
• Bracket protects sensor from frontal impact only
Tools and Materials
Pencil
Safety goggles
Dust mask
Electric drill
Drill bits:
Bracket holes
4mm, #23,
or
9/64"
Fiberglass hull
chamfer, countersink, 6mm,
or
1/4"
Transom hole (optional) 20mm
or
13/16"
Cable clamp holes
3mm
or
1/8"
Masking tape
Marine sealant
Screwdrivers
Straight edge
Zip-ties
Water-based antifouling paint (
mandatory in salt water
)
Pretest
Connect the sensor to the instrument and spin the paddlewheel.
Check for a speed reading (and the approximate air temperature if
applicable). If there is no reading or it is inaccurate, return the
instrument to your place of purchase.
Mounting Location
To ensure the best performance, the sensor
must
be in contact
with aeration-free and turbulence-free water. Mount the sensor on
the transom as close to the centerline (keel) of the boat as
possible. On slower heavier displacement hulls, positioning it
farther from the centerline is acceptable.
Headroom
—Allow adequate space above the bracket for it to
release and rotate the sensor upward (see Figure 1).
Caution
: Do not mount in an area of turbulence or bubbles:
Near water intake or discharge openings;
Behind strakes, struts, fittings, or hull irregularities;
Behind eroding paint (an indication of turbulence).
Caution
: Avoid mounting the sensor where the boat may be
supported during trailering, launching, hauling, or storage.
•
Single drive
boat
—Mount
the sensor on
the starboard
side at least
75mm (3")
beyond the
swing radius of
the propeller
(see Figure 2).
•
Twin drive
boat
—Mount
the sensor
between the
drives.
OWNER’S GUIDE & INSTALLATION INSTRUCTIONS
IMPORTANT
: Please read the instructions completely
before proceeding with the installation. These
instructions supersede any other instructions in your
instrument manual if they differ.
Record the information found on the cable tag for future reference.
Part No._________________Date___________Frequency________kHz
Figure 1. Headroom required at mounting location
headroom
Headroom without
speed sensor
109mm (4-5/16")
Headroom with
speed sensor
130mm (5-1/8")
Figure 2. Mounting location
75 mm (3")
minimum beyond
swing radius
on single drive boat
TRIDUCER®
multisensor
P39
