Eagle Magna - SPEED;TEMPERATURE SENSOR INSTALLATION - Magna Plus Only

The
temperature
of water in the lake is seldom constant from
top
to
bottom.
Layers
of different
temperatures
form,
and the
junction
of a
warm and cool
layer
of water is called a thermocline. The
depth
and
thickness of the thermocline can
vary
with the season
or time of
day.
In
deep
lakes there
may
be two or more at different
depths.
Thermoclines are
important
to fishermen because
they
are areas
where fish are active.
Many
times bait fish will be above the
thermocline while
larger game
fish will
suspend
in or
just
below it.
The
Magna
can detect this invisible
layer
in the
water,
but the
sensitiv-
ity
will
probably
have to be turned
up
to see it.
These units have reverse
polarity protection.
No
damage
will occur if
the
power
wires are reversed.
However,
the unit
will not work until the
wires are attached
correctly.
SPEEDITEMPERATURE
SENSOR INSTALLATION
-
Magna
Plus
Only
Mount the
speed/temp
sensor on the boat's transom in a location
where the
flow of water is the smoothest. There should be a minimum
of turbulence
and air bubbles in the chosen location. The
port (left)
side of the transom is
preferred,
however,
the starboard
(right)
side
can be used if
necessary.
Do not mount the
speed
sensor behind
strakes,
ribs,
or thru-hull
fittings.
These
will
disturb
the flow of water to
the
speed
sensor. In a
typical
installation,
the
speed
sensor
is
mounted six to twelve inches from the centerline of the hull. The
sensor must
always
be in the water to
function
properly.
Make certain
the chosen location is in the water even
at
high speed
or when the
boat is on
plane.
Once
you
determine the
proper
location,
place
the sensor
on the
transom. Make certain the sensor's bottom is
flush with the bottom of
the hull. Mark the transom in four
places,
two
in
each
slot. Drill a 5/
32"
mounting
hole at each location. Mount the sensor to the hull
with
four #10 stainless steel screws. Use a
good grade
of
caulking
com-
pound
to seal the screws.
Adjust
the sensor so it is flush with the
bottom of the hull and
tighten
the screws.
If the base of the transom has a
radius,
fill the
gap
between the
transom and the sensor with
caulking compound.
This
will
help
insure
a smooth water flow.
Route the sensor cable to the in-line connector on the
Magna
Plus'
power
cable. The
speed/temp
sensor is now
ready
for use.
SURFACE LAYER
ABSORBS HEAT
FROM THE SUN
EPILIMNION
760
e
at
750
THE RMOCLINE
MOST
pRoDucTivE
ZONE FOR FISHING
680
660
500
470
22
3
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