Simrad ES70-7C - INSTALLATION REV B Manuel utilisateur

Installation manual

Simrad ES70-7C

70 kHz split-beam transducer

TECHNOLOGY FOR SUSTAINABLE FISHERIES

www.simrad.com

SimradES70-7C

Installationmanual

Thisdocumentprovidesageneraldescriptionofhowto

installtheSimradES70-7CSplit-beamtransducer.The

informationmustberegardedasgeneralguidelinesand

recommendationsonly.Theinstallationshipyardmust

designandmanufactureinstallationhardwaretotthe

ES70-7Ctransduceroneachindividualvessel.

307324/B

20January2009

Documenthistory

Documentnumber:307324/ISBN-10:-/ISBN-13:978-82-8066-080-0

Rev.ANovember2006Firstversion.

Rev.BJanuary2009

Minorchangestothedocumentstructure.Mountingarrangement

drawingchanged,seeRecommendedarrangement[204678]on

page41.

TheinformationcontainedinthisdocumentremainsthesolepropertyofKongsbergMaritimeAS.Nopart

ofthisdocumentmaybecopiedorreproducedinanyformorbyanymeans,andtheinformationcontained

withinitisnottobecommunicatedtoathirdparty,withoutthepriorwrittenconsentofKongsberg

MaritimeAS.Thedocument,oranypartofit,maynotbetranslatedtoanyotherlanguagewithoutthe

writtenapprovalfromKongsbergMaritimeAS.

Disclaimer

KongsbergMaritimeASendeavourstoensurethatallinformationinthisdocumentiscorrectandfairly

stated,butdoesnotacceptliabilityforanyerrorsoromissions.

Warning

Theequipmenttowhichthismanualappliesmustonlybeusedforthepurposeforwhichit

wasdesigned.Improperuseormaintenancemaycausedamagetotheequipmentand/orinjury

topersonnel.Theusermustbefamiliarwiththecontentsoftheappropriatemanualsbefore

attemptingtoinstall,operateorworkontheequipment.

KongsbergMaritimeASdisclaimsanyresponsibilityfordamageorinjurycausedbyimproper

installation,useormaintenanceoftheequipment.

Support

IfyourequiremaintenanceonyourSimradproductcontactyourlocaldealer.Youcanalsocontactususing

thefollowingaddress:s

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Installationmanual

Tableofcontents

ABOUTTHISMANUAL.......................................................5

SIMRADES70-7C..............................................................6

WHERETOMOUNTTHETRANSDUCER...............................7

HOWTOINSTALLTHETRANSDUCER..............................12

Transducerinstallationinblister............................................................................12

Transducerinstallationinboxkeel.........................................................................17

Transducerushmountedinasteeltank...............................................................19

Transducerwithacousticwindow..........................................................................20

Transducermountedinsidethehull.......................................................................21

Transducermountedonadropkeel.......................................................................23

Retractabletransducer............................................................................................24

TRANSDUCERCABLEGLANDSANDSPLICING.................25

Aboutcableglands.................................................................................................25

Cableglandforsteelhulls......................................................................................26

CableglandforwoodenandGRPhulls.................................................................27

Cableglandsforsmallhulls...................................................................................28

Transducercablesplicing.......................................................................................29

Ordernumbers........................................................................................................29

STEELCONDUIT..............................................................30

TRANSDUCERHANDLINGANDMAINTENANCE................31

Rulesfortransducerhandling.................................................................................31

Approvedanti-foulingpaints..................................................................................31

Usingself-lockingtaps...........................................................................................32

DRAWINGFILE...............................................................36

Echosounderconnections......................................................................................36

Splicingthetransducercable.......................................................................36

GeneralPurposeTransceiver(GPT)wiring...................................................37

GeneralPurposeTransceiver(GPT)transducerplugassembly.......................38

Outlinedimensionsandinstallationdrawings........................................................39

Outlinedimensions[204603].......................................................................40

Recommendedarrangement[204678]..........................................................41

Mountingring[204716]..............................................................................43

Clampingring[204718]..............................................................................45

307324/B3

SimradES70-7C

4307324/B

Aboutthismanual

ABOUTTHISMANUAL

Purpose

Thepurposeofthisinstallationmanualistoprovidegeneric

descriptionsandillustrationsallowingthereadertounderstand

thebasicprinciplesforechosoundertransducerinstallation.

Abouttheinformationprovidedinthisdocument

Theinformationinthisdocumentmustberegardedasgeneral

guidelinesandrecommendationsonly.Theinstallationshipyard

mustdesignandmanufactureinstallationhardwaretoteach

individualtransducerandvessel.

Approvalbymaritimeauthorities

Wheneverrequired,theinstallationshipyardmustalsohavethe

installationapprovedbytheapplicablemaritimeauthorities.

Additionalinformation

Foradditionaldetailedinformationaboutthetransducerto

beinstalled,refertothedocumentationprovidedwiththe

transducer.Drawingsanddescriptionscanalsobeobtainedfrom

t t p : / / w w w . s i m r a d . c o m .

307324/B5

SimradES70-7C

SIMRADES70-7C

Thepurposeofthismanualistheprovidethebasicinformation

requiredtoinstalltheSimradES70-7CSplit-beamtransducer.

Transduceranddocuments

•SimradES70–7C:KSV-203678

•Productspecication:855–164385

•Drawings:

–Outlinedimensions:834–204603

–Mountingring:871–204716

–Clampingring:871–204718

–Mountingarrangement:820-204678

Note

Althoughdrawingsareprovidedtoexplaintheinstallation

principles,theinstallationshipyardmustprovidethenal

drawingsrequiredtotthetransducertoeachindividual

vessel.Also,whenapplicable,theinstallationshipyard

musthavethedrawingsandinstallationapprovedbythe

propermaritimeauthorities.Thedrawingsspecicfor

theES70-7CtransducerarelocatedintheDrawingle

onpage36.

Technicalspecications

RefertotheES70-7Cproductspecication.

Additionalpartsprovidedforinstallation

ThefollowingitemscanbesuppliedbySimradtofacilitate

installation:

•Mountingring:ES7–203680

•Clampingring:ES7–203679

•Transducercable(forextension):642–078215

6307324/B

Wheretomountthetransducer

WHERETOMOUNTTHETRANSDUCER

Asingleanswertothequestionwheretolocatethetransducer

cannotbegiven.Itdependsverymuchonthevessel’s

construction,howthehullisshapedandhowthewaterruns

alongthehull.Therearehoweveranumberofimportantguide

lines,andsomeoftheseareevenconicting.

Mountthetransducerdeep

Mountthetransduceratadeeppositiononthehull.Considerthe

situationswhenthevesselisunloaded,andwhenitispitching

inheavyseas.

Thereareseveralreasonsforthis.

1Theupperwaterlayersoftheseacontainamyriadofsmall

airbubblescreatedbythebreakingwaves.Inheavyseasthe

upper5to10metresmaybelledwithair,andthehighest

concentrationswillbenearthesurface.Airbubblesabsorb

andreectthesoundenergy,andtheymayinworstcases

blockthesoundtransmissionaltogether.

2Anotherreasontogodeepisthecavitationinfrontof

highpowertransducers.Cavitationistheformationof

smallbubblesinthewaterduetotheresultinglocal

pressurebecomingnegativeduringpartsoftheacoustic

pressurecycles.Thecavitationthresholdincreaseswiththe

hydrostaticpressure.

3Thetransducermustneverbeliftedfreeofthewatersurface.

Transmittingintoopenairmaydamagethetransducer

beyondrepair.Mountingthetransduceratadeepposition

onthehullpreventsthis.

4Ifthetransducerisliftedupfromthewaterduringheavy

seas,itmaybedamagedwhenthehullstrikesbackatthe

seasurface.Thisisespeciallyimportantforlowfrequency

transducerswithlargefaces.

Mountthetransducermidwaybetweenthebow

andthesterntoavoidheaveeffects

Heaveistheupanddownmovementofthevessel.Itdisturbsthe

echotracesintheechogram,sothataatbottomisdisplayed

asawave.Atransducerlocationinthemiddleofthevessel

minimisestheinuenceofvesselrollandpitch.

Mountthetransducerawayfromprotruding

objectsonthehull

Objectsprotrudingfromthehull,suchaszincanodes,sonar

transducersoreventhevessel’skeel,generateturbulenceand

ownoise.Holesandpipeoutletsarealsoimportantnoise

sources.Theymayactasresonantcavitiesamplifyingtheow

307324/B7

SimradES70-7C

noiseatcertainfrequencies.Donotplaceanechosounder

transducerinthevicinityofsuchobjects,andespeciallynot

closebehindthem.Forthesamereason,itisveryimportant

thatthehullareaaroundthetransducerfaceisassmoothand

levelaspossible.Eventracesofsealingcompound,sharpedges,

protrudingboltsorboltholeswithoutllingcompoundwill

createnoise.

Mountthetransducerattheforwardpartofthe

hulltominimisetheeffectsfromtheboundary

waterlayer

Whenthevesselforcesitswaythroughthesea,thefriction

betweenthehullandthewatercreatesaboundarylayer.The

thicknessoftheboundarylayerdependsuponvesselspeedand

theroughnessofthehull.Objectsprotrudingfromthehull,and

dentsinthehull,disturbtheowandincreasethethicknessof

theboundarylayer.Theowinthisboundarylayermaybe

laminarorturbulent.Alaminarowisanicelyordered,parallel

movementofthewater.Aturbulentowhasadisorderlypattern,

fullofeddies.Theboundarylayerincreasesinthicknesswhenthe

owgoesfromlaminartoturbulent.Thegurebelowillustrates

theboundarylayerofavesselmovingthroughthewater.

Figure1Boundarywaterlayer

ATurbulentow

BLaminarow

CAirbubblesinthewater

Furthermore,airbubblesintheseawaterarepresseddownbelow

thehullandmixedintotheboundarylayer.Theboundarylayer

isthinunderneaththeforwardpartofthevessel,andincreasesin

thicknessasitmovestowardsaft.Ifthesidesofthehullaresteep,

someoftheairbubblesintheboundarylayermayescapetothe

seasurfacealongthevesselsides.Itisourexperiencethatawide

8307324/B

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