Nexus 21 Depth TH 52 Manuel D’Utilisation

 

DEPTH TH52 

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. 
 

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). 

P17, Retractable 

200mm (8”)

51mm (2”) 

60mm (2-3/8”) 

 
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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