Silva TH52 installation manual Mounting Location, Acoustic Noise, Placement

3 Mounting Location

3.1Acoustic Noise

Acoustic noise is always present and these sound waves can interfere with the operation of the transducer. Background noise from sources such as: waves, fish, and other vessels cannot be controlled. However, carefully selecting the transducer mounting location can minimize the affect of vessel generated noise from the propeller(s) and shaft(s), other machinery, and other echosounders. The lower the noise level, the higher the echosounder gain that can be used.

3.2Placement

Choose a location where:

•The water flowing across the hull is smoothest with a minimum of bubbles and turbulence (especially at high speeds).

•The transducer will be continuously immersed in water.

•The transducer beam is unobstructed by the keel or propeller shaft(s).

•There is a minimum deadrise angle.

•There is adequate headroom inside the vessel for the height of the housing, tightening the nuts, and removing any insert (see table below).

Caution: Do not mount the sensor:

Near water intake or discharge openings, Behind strakes, fittings, or hull irregularities, Behind eroding paint (an indication of turbulence)

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