Simrad TRANSDUCER - INSTALLATION GENERIC REV H Manuale di Installazione Pagina 24
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SimradMS70
Wheretomountthetransducer
Asingleanswertothequestionwheretolocatethetransducercannotbegiven.It
dependsverymuchonthevessel’sconstruction,howthehullisshapedandhowthe
waterrunsalongthehull.Therearehoweveranumberofimportantguidelines,and
someoftheseareevenconicting.
Mountthetransducerdeep
Mountthetransduceratadeeppositiononthehull.Considerthesituationswhenthe
vesselisunloaded,andwhenitispitchinginheavyseas.
Thereareseveralreasonsforthis.
1Theupperwaterlayersoftheseacontainamyriadofsmallairbubblescreatedbythe
breakingwaves.Inheavyseastheupper5to10metresmaybelledwithair,and
thehighestconcentrationswillbenearthesurface.Airbubblesabsorbandreectthe
soundenergy,andtheymayinworstcasesblockthesoundtransmissionaltogether.
2Anotherreasontogodeepisthecavitationinfrontofhighpowertransducers.
Cavitationistheformationofsmallbubblesinthewaterduetotheresultinglocal
pressurebecomingnegativeduringpartsoftheacousticpressurecycles.The
cavitationthresholdincreaseswiththehydrostaticpressure.
3Thetransducermustneverbeliftedfreeofthewatersurface.Transmittinginto
openairmaydamagethetransducerbeyondrepair.Mountingthetransducerata
deeppositiononthehullpreventsthis.
4Ifthetransducerisliftedupfromthewaterduringheavyseas,itmaybedamaged
whenthehullstrikesbackattheseasurface.Thisisespeciallyimportantforlow
frequencytransducerswithlargefaces.
Mountthetransducermidway
Mountthetransducermidwaybetweenthebowandthesterntoavoidheaveeffects
Heaveistheverticalmovementofthevessel.Itdisturbstheechotracesintheechogram,
makingaatbottomappearasawave.Atransducerlocationinthemiddleofthevessel
minimisestheinuenceofthevessel’srollandpitch.
Avoidprotrudingobjects
Mountthetransducerwellawayfromprotrudingobjectsonthehull.
Objectsprotrudingfromthehull,suchaszincanodes,sonartransducersoreventhe
vessel’skeel,generateturbulenceandownoise.Holesandpipeoutletsarealso
importantnoisesources.Theymayactasresonantcavitiesamplifyingtheownoiseat
certainfrequencies.
Donotplaceanechosoundertransducerinthevicinityofsuchobjects,andespecially
notclosebehindthem.
22
331549/B
- Installation manual 1
- Revisionstatus 4
- Copyright 4
- Disclaimer 4
- Tableofcontents 5
- SimradMS70 10
- Aboutthismanual 11
- Systemdescription 15
- Systemdiagram 15
- Systemunits 16
- PowerSupplyUnit 17
- Transducer 17
- UninterruptedPowerSupply(UPS) 17
- Generalsafetyrules 18
- Generalsupplyconditions 19
- Supplypower 20
- Compassdeviation 20
- Noisesources 20
- Drydocking 20
- Supportinformation 21
- Telephone:+14257121136 22
- Telefax:+14257121193 22
- E-mailaddress:s 22
- Installationplanning 23
- Wheretomountthetransducer 24
- Avoidtheboundarywaterlayer 25
- Avoidallpropellers 26
- Avoidallbowthrusters 26
- Sonarroomrequirements 27
- Cablingrequirements 28
- Transducerinstallation 30
- Transducerdescription 31
- Transducerunpacking 31
- Handlingrules 32
- (CD016012B) 32
- Installationprinciples 33
- Preparations 34
- Mountingthearray 35
- Transducercablesandconduit 37
- Transduceralignment 38
- Vesselcoordinatesystem 39
- Sensorlocations 40
- Measurementaccuracy 41
- Transducerorientation 43
- Coordinatesystems 44
- Makingthemeasurements 44
- Headingsensorcalibration 45
- Alignmentsummary 45
- Rulesfortransducerhandling 46
- Rulesfortransducermaintenance 47
- TransceiverUnitinstallation 49
- TransceiverUnitpreparations 51
- Forwardview 53
- Rearview 54
- AboutthePowerSupplyUnit 56
- PowerSupplyUnitpreparations 56
- Steelconduitsforpowercables 58
- PowerSupplyUnitpopulation 59
- MultibeamOperatorStation 61
- Operatorstation 62
- Installationprocedure 63
- UPSinstallation 65
- TransceiverUnitassembly 66
- AbouttheTransceiverUnit 67
- MountingtheTRXUracks 70
- MountingtheEthernetswitch 75
- Important 76
- SupplyUnits 78
- Connectingthetransducercables 80
- Cablelayoutand 82
- Readthisrst! 83
- Cableplans 84
- Ethernetswitchconnectors 85
- Systeminterconnectioncables 86
- Ethernetcables;TRCcomputers 87
- Powercables;TransceiverUnit 90
- Powercables;PowerSupplyUnits 91
- (CD016008D) 94
- Computer 96
- Detailedlistofcables 98
- Cat6Ethernetcablesmustbeused 103
- 331549/B 104
- [K]Externaltrigger 107
- (CD016022-003) 113
- [W]OperatorStationcables 115
- Transducercables 117
- Elementorganisation 118
- (CD016010A) 118
- (CD016010B) 119
- Seriallinesupport 127
- JumperandDIPswitchsettings 128
- Adaptercable 129
- Cablespecications 131
- GenericRS-232Serialline 132
- RS-232asexternaltrigger 133
- Conductors:9x2x0.5mm² 134
- Voltage:60V 134
- CoaxtoRS-232cableandadapter 135
- GenericRS-422Serialline 136
- MoxaCP134U-ISeriallineadapter 137
- PowerSupplyUnitwiring 139
- Conductors:16mm² 140
- Screen:Separateconductor 140
- Voltage:600V 140
- -75V +75V 141
- -12V -12V 141
- -6V -6V +6V +6V 141
- Neutral GroundLive 141
- +12V +12V 141
- PowerConnectorPanel 142
- +6and+12VdctotheTRXUbackplane 143
- TransceiverUnitwiring 145
- ACmains(IEC60320) 147
- Circuitbreaker 148
- RJ45Ethernet,straight 149
- RJ45Ethernet,crossover 151
- VGA/SVGADisplay 152
- Keyboardcable 153
- Mousecable 154
- DVI–IDisplay 155
- Seriallineadapter 156
- SeriallinetoUSBadapter 157
- 17 18 19 20 21 160
- 9 10 11 12 13 161
- 0 1 2 3 4 5 6 7 8 162
- Settingtowork 163
- Technicalspecications 164
- Systemcomponents 165
- Operationandperformance 166
- Congurationsettings 167
- •Numberofsectors:1to20 168
- Operationalperformance 169
- Performance,TransceiverUnit 170
- Performance,PowerSupplyUnit 170
- Performance,Transducerarray 170
- Interfacespecications 171
- Outputs: 172
- Weightsandoutlinedimensions 173
- Powerrequirements 175
- Environmentalrequirements 176
- Drawingle 177
- Allmeasurementsinmm 179
- Thedrawingisnotinscale 179
- [281020]Rev .A 179
- CD01601 1-001 179
- CD01601 1-002 180
- Bottomview 182
- Frontview 183
- Sideview 184
- CD016025BPage1of1 185
- 308337Rev .A 185
- Topview 186
- Clampingring(208465) 188
- Mountingring(208461) 190
- AppendixA 192
- Equipmenthandling 192
- Inspection 194
- Unpacking 194
- Storageafterunpacking 196
- Storageafteruse 197
- Re-packaging 198
- Temperatureprotection 199
- Electro-StaticDischarge(ESD) 200
- Disposal 201
- AppendixB 202
- Basiccable 202
- RadioFrequencyinterference 203
- Physicalprotection 203
- Grounding 204
- Cableconnections 204
- Cableterminations 204
- Cableidentication 205
- 2011KongsbergMaritimeAS 210
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