Simrad 38-200 COMBI C -  REV D Installation Manual Download Page 21

How to install the transducer

Use mounting and clamping rings
whenever provided

Circular transducers may be provided with mounting and
clamping rings, or with drawings to allow for local production
of these. The mounting ring is welded to the hole prepared for
the transducer, while the clamping ring fits around the edge of
the transducer body. Bolts through the clamping ring into the
mounting ring will secure the transducer between them. Note
that several transducers use direction guides to allow correct
mounting.

Smooth surface is important

Mounting screws or bolts must not be extruding from the
transducer or the area immediately around it. Make sure that the
surface of the transducer face, the installation hardware used to
mount it, the hull plating and the putty around the transducer is
as even and smooth as possible. Obstructions on these surfaces
will create problems with turbulent flow.

Example: Mounting inside the hull

The transducer shown in the figure below is mounted inside the
hull. The tank is filled with oil.

Figure 9

Mounting inside the hull

A

Steel tank

B

Oil

C

Hull plating

D

Cable service

loop

E

Stuffing tube

F

Cable in steel

conduit

G

Hole for oil

filling

H

Air outlet

(CD017012C)

B

A

C

D

E

F

G

H

164986/D

19

Summary of Contents for 38-200 COMBI C - REV D

Page 1: ...Installation manual Simrad 38 200 Combi W Dual frequency echo sounder transducer T E C H N O L O G Y F O R S U S T A I N A B L E F I S H E R I E S www simrad com...

Page 2: ......

Page 3: ...i W Dual frequency transducer The information must be regarded as general guidelines and recommendations only The installation shipyard must design and manufacture installation hardware to fit the 38...

Page 4: ...s document is correct and fairly stated but does not accept liability for any errors or omissions Warning The equipment to which this manual applies must only be used for the purpose for which it was...

Page 5: ...k 15 Use mounting and clamping rings whenever provided 15 Smooth surface is important 16 Water filled 16 Example Flush mounting in a steel tank 16 Transducer with acoustic window 17 Use mounting and c...

Page 6: ...elf lock taps provided by Simrad 32 Supplier and manufacturer 32 DRAWING FILE 33 Echo sounder connections 33 Splicing the transducer cable 33 General Purpose Transceiver GPT wiring 34 Transducer cable...

Page 7: ...amage the transducer About the information provided in this document The information in this document must be regarded as general guidelines and recommendations only The installation shipyard must des...

Page 8: ...final drawings required to fit the transducer to each individual vessel Also when applicable the installation shipyard must have the drawings and installation approved by the proper maritime authoriti...

Page 9: ...local pressure becoming negative during parts of the acoustic pressure cycles The cavitation threshold increases with the hydrostatic pressure 3 The transducer must never be lifted free of the water s...

Page 10: ...ess when the flow goes from laminar to turbulent The figure below illustrates the boundary layer of a vessel moving through the water Figure 1 Boundary water layer A Turbulent flow B Laminar flow C Ai...

Page 11: ...be filled with air or aerated water in the upper position and release this in the lower position In general all transducers must be therefore placed well away from the bow thruster However this is no...

Page 12: ...one third of the total length of the hull at the water line Figure 2 General recommendation for transducer location A Transducer B Inclination angle C Hull length at water line D Maximum 1 3 of the hu...

Page 13: ...or with drawings to allow for local production of these The mounting ring is welded to the hole prepared for the transducer while the clamping ring fits around the edge of the transducer body Bolts t...

Page 14: ...sducer cable E E A C G D F B CD017010B Note that the transducer cable must be provided with a cable loop inside the blister Observe the vertical forward edge of the blister This will guide the water t...

Page 15: ...by designing the blister in parallel with the keel However if the blister is located close to the bow the front of the blister may have a few degrees toe in towards the bow Figure 5 Toe in principle A...

Page 16: ...cer installation The box keel is already the deepest part of the vessel If the box keel is too narrow to accommodate the transducer it can be widened either symmetrically or to one side only In the la...

Page 17: ...D Cable in steel conduit E Cable service loop CD1701 1A A B D C E Transducer flush mounted in a steel tank Flush mounting is used on very large vessels with a hull so deep that no air bubbles are fou...

Page 18: ...flow Water filled As for a blister the interior of the tank must be filled with water This can be accomplished by air release through a steel tube which is extended either to open air 1 5 m above the...

Page 19: ...welded to the hole prepared for the transducer while the clamping ring fits around the edge of the transducer body Bolts through the clamping ring into the mounting ring will secure the transducer bet...

Page 20: ...contact between the transducer face and the hull Build a tank around the transducer and fill it with a liquid Oil used in hydraulic systems is a well suited liquid for this purpose It contains no gas...

Page 21: ...Smooth surface is important Mounting screws or bolts must not be extruding from the transducer or the area immediately around it Make sure that the surface of the transducer face the installation hard...

Page 22: ...ransducers Such instrument keels have been built mainly on research vessels often protruding as far as three meters below the hull At that depth the water is free of air bubbles up to very high sea st...

Page 23: ...on vessels with a hull where it is difficult or impossible to install a blister it may still be worth while The principles of a hull unit with a retractable transducer is shown below Vessels without a...

Page 24: ...anger of flooding in the event of gland failure and transducers installed in this manner are also easier to replace Some vessels may experience difficulties finding suitable areas of the hull for moun...

Page 25: ...e sure that you do not damage the transducer cable by tightening the packing nipple too hard F Cable to the echo sounder or a junction box The cable gland kit includes all of the necessary parts neede...

Page 26: ...C Rubber gaskets D Hole diameter 28 mm E Steel conduit F Cable to the echo sounder or a junction box The cable gland kit includes all of the necessary parts needed to install the unit except screws S...

Page 27: ...er gasket C Plastic disk D Rubber gasket E Stuffing tube F Backing nut bronze G Backing washer plastic H O ring 42 5 x 3 0 N I O ring 39 5 x 3 0 N J Cable to the echo sounder or a junction box Stuffin...

Page 28: ...onnected to the junction box chassis using the EMC cable glands but if you do this the junction box chassis must not be connected to vessel s ground Note Do not solder the wires together with only ele...

Page 29: ...there is a risk of reduced echo sounder performance Steel conduits qualities and shielding The steel conduit must be unbroken and watertight from the transducer to above the water line From there the...

Page 30: ...sducer face An anti fouling paint may be applied to the transducer face Because some paint types may be aggressive to the polyurethane in the transducer face please consult Simrad s list of approved p...

Page 31: ...Yellow Mix BXA386 BXA390 and BXA391 first then apply When dry mix HKA563 HKA570 and HKA571 apply 2 Intersmooth 360 Ecoloflex SPC 3 Micron Extra Hempel IFA Coatings Head office address Hempel A S Lundt...

Page 32: ...thread length The assembly is just as easy as with a normal metric thread There is no general applicable standard e g DIN standard for the Emuge self lock thread Figure 10 Example internal and extern...

Page 33: ...rd Whenever self locking threads are required this is shown on the technical drawing In the case of tapping through holes the arrow at the end of the center line illustrates the screw in direction of...

Page 34: ...correct direction Self lock taps provided by Simrad The following self lock taps are on stock at Simrad and can be ordered from us Threads Drill diameter for threads Part no M6 5 2 700 078838 M8 7 0 7...

Page 35: ...ad Topics Echo sounder connections on page 33 Outline dimensions and installation drawings on page 36 Echo sounder connections Observe the following information related to electrical connection of the...

Page 36: ...Black Black Black Black White White White White Connect to plug housing 4 17 Auxiliary 25 pin D connector on GPT Thermistor Thermistor Not used Low frequency Low frequency High frequency High frequen...

Page 37: ...tom cap and cable clamp Washers Heat shrinkable tubing Lower plug case Outer screen together with inner screen Drain wire fold back over jacket and temporary fastened with tape Outer screen and inner...

Page 38: ...ounted using the mounting and clamping rings Observe the 17 Nm maximum torque when the transducer is mounted using the threaded inserts on the transducer body Topics Outline dimensions 208889 on page...

Page 39: ...nsions 208889 All measurements in mm The drawing is not in scale 834 208889 Rev B CD017000 004 Page 1 of 1 130 180 152 80 100 2 85 2 Use 12 mm M8 bolts Weight without cable 2 4 kg Threaded inserts for...

Page 40: ...Simrad 38 200 Combi W Mounting ring 208846 198 60 degrees M10 Six holes 0 2 30 degrees All measurements in mm The drawing is not in scale 499 208846 Rev A CD017000 009 Page 1 of 2 38 164986 D...

Page 41: ...max 20 2 2 30 1 1 6 3 181 0 5 0 222 0 5 0 226 1 1 109 3 1 1 240 1 1 122 1 1 84 3 0 1 0 0 075 Chamfer 3 x 45 degrees 45 degrees All measurements in mm The drawing is not in scale 499 208846 Rev B CD01...

Page 42: ...Simrad 38 200 Combi W Clamping ring 204677 40 164986 D...

Page 43: ...Drawing file 164986 D 41...

Page 44: ...Simrad 38 200 Combi W Recommended arrangement 204678 42 164986 D...

Page 45: ...Drawing file 164986 D 43...

Page 46: ...erence 27 Emuge 30 Example Acoustic window 18 box keel 15 flush mounting 16 Inside the hull 19 F Flush mounting example 16 steel tanl 15 G General Purpose Transceiver transducer plug 35 wiring 34 Glas...

Page 47: ...1 15 17 19 Splicing transducer cable 26 33 Steel conduit diameter 27 qualities 27 shielding 27 why 27 Steel hull cable gland 23 Steel tank flush mounting 15 water filled 16 Sunlight do NOT expose 28 S...

Page 48: ...ritime AS Kon g s b e rg M a rit im e A S S t ra n d p rom e n a d e n 5 0 P O Box 1 1 1 N 3 1 9 1 H ort e n N orwa y S im r a d Te le p h on e 4 7 3 3 0 3 4 0 0 0 Te le fa x 4 7 3 3 0 4 2 9 8 7 con t...

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