Transducer installation in a flush mounted steel tank
The transducer can be flush mounted on large vessels, where the size of the hull prevents air bubbles from reaching down to the transducer face. Flush mounting can also be used on vessels operating in shallow harbours or waters, where a protruding blister can not be accepted.
The standard method for flush mounting on a steel vessel is to weld a steel tank inside the hull, and mount the transducer into this tank.
This can be accomplished by air release through a steel tube. This tube should be extended either to open air 1.5 m above the water line, or to the water outside the hull at a point higher than the tank interior.
If the tube is extended to open air, drainage must be provided with a controlled leak through the transducer flange or by means of a separate hole in the tank bottom.
Example
Image
A Steel tank
B Water
C Drainage hole
D Cable service loop
E Steel tube for air outlet (must reach above water line)
F Bushing
G Cable in steel conduit
H Mounting ring (may be part of the steel tank)
Using the mounting ring
This large circular is transducer is designed to be mounted using the integrated flange and a mounting ring.The mounting ring is welded to the hole prepared for the transducer. Bolts through the transducer flange into the mounting ring will secure the transducer in place.
Note
Make sure that the "Forward" direction on transducer points in the forward direction of the vessel.
A suitable mounting ring can be provided by Kongsberg Maritime. A drawing is available for local manufacturing. End user manuals and source drawings (normally in AutoCad format) can be downloaded from our website.
Smooth surface is important
Make sure that the surface of the transducer face, as well as the plating and putty around the transducer is as even and smooth as possible.Obstructions on these surfaces will create problems with turbulent flow, and may cause noise.
Mounting screws or bolts must not be extruding from the transducer or the plating immediately around it.
Note
Obstructions on these surfaces will create problems with turbulent flow, and may cause noise.