Installation manual
Simrad38-7
STEELCONDUIT
Whyusesteelconduits?
Itisstronglyrecommendedtolayasteelconduitfromthe
transducer’scableglandtotheechosoundertransceiver,andto
pullthetransducercablethroughthisconduit.Thereareseveral
reasonsforthis.
•Itwillmakeiteasieratalaterstagetoreplacethetransducer.
•Noiseandinterferencefromotherelectricalequipmentis
greatlyreduced.
•Theriskofoodingisgreatlyreducedifthepipeisterminate
abovethewaterline.
WithasteelconduittheinstallationwillsatisfytheEU
regulationsforEMCinterference.Withoutasteelconduit,there
isariskofreducedechosounderperformance.
Steelconduitsqualitiesandshielding
Thesteelconduitmustbeunbrokenandwatertightfromthe
transducertoabovethewaterline.Fromthere,thecablecan
bepulledfurther,orajunctionboxcanbeinstalledtofacilitate
furtherconnections.Notethatthesteelconduitmustactasa
continuouselectricalscreenalltheway.
Steelconduitdimensions:
•minimum35mminnerdiameter
•minimum6mmwallthickness(4.5mmifgalvanised)
Morethatonetransducercable?
Iftwoormoretransducersareinstalledclosetoeachotheritis
possibletopulltheircablesinthesamesteelconduit,provided
theconduitdiameterisincreasedaccordingly.However,foreasy
replacementitisrecommendedthateachtransducerhasitsown
steelconduit.
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