Instruction Manual
33
4.2 Transducer Installation
The IS12 Combi is supplied with 50mm (2in) diameter plastic
speed and depth sensors, or transducers. The speed unit
includes an Aortic Sea Valve, which allows the transducer to be
removed for cleaning without seawater flooding the bilges
through the hull fitting.
WARNING Plastic transducers are suitable for GRP, ferrous, ferrocement or
wooden ply hulled boats. They are not suitable for boats with
a solid, planked wooden hull as swelling can damage the trans-
ducers. For this application, a bronze transducer will be neces-
sary - contact your local Simrad agent for more details.
WARNING As transducer installation involves drilling a hole in the bottom
of the boat, please read these installation instructions thorough-
ly before attempting installation. If in doubt, employ a quali-
fied marine electronics engineer to install the transducer.
NOTE Simrad cannot accept any responsibility for the cost of haul-
ing the boat out of the water in the event of the transducer not
functioning - it is recommended that the transducer is tested by
connecting it to the powered instrument and spinning the pad-
dlewheel before attempting permanent installation.
4.2.1 Selecting a Suitable Location
For optimum performance, the transducers must be located in
positions that are clear from any turbulence caused by hull pro-
trusions, keels, skin fittings etc (Fig 4.7) -
Fig 4.7 - Suitable Location For Transducers
Sailboat Planing Vessel Displacement Vessel
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