User’s Manual INNOMAR Parametric Sub-Bottom Profilers / SESWIN 27
Innomar Technologie GmbH (2023-01) 27
3.2.3 Pole-Mount Transducer Installation
Usually, the transducers of the INNOMAR shallow-water models SBP are installed over-the-side
using a pole. Forward direction is shown by an arrow on top of the transducer. There are six studs
on the transducer placed on a circle for the transducer mounting, see appendix for details.
For proper operation the transducer has to be fixed firmly and vertically because of the narrow
sound beam. Do not use long pipes with small diameters that are vibrating when the ship is
moving. It is important to decouple the transducer mechanically from the mounting structure by
elastic materials like rubber to avoid vibrations going to the transducer. The whole transducer
must be covered by water all the time, even during rough sea!
Protect the transducer cable against damages, take care on the bending radius.
Protect the transducer connector against damages and water to avoid corrosion.
The connector is not water proof! For transport and storage, the connector should be
sealed by the provided covers.
Protect the active area against damages (mechanics or chemicals).
Protect the active area against sunlight; UV-light may affect the materials used.
Do not use a transducer with damaged face or damaged cable!
The transducer face (active area) needs to be clean; no paint, oil or grease should be
on the active area of the transducer.
Avoid thermal stress (e.g. putting sun-heated transducers into cold water).
After usage rinse the transducer with fresh water and dry the transducer before storage.
If a transducer is placed into water for a longer period of time, use zinc anodes to
prevent corrosion.
If a transducer is used in tropic waters for a longer period, it is strongly recommended to
use an anti-fouling paint (also on mobile transducer installations) to prevent biofouling,
see section on hull-mounted transducers below.
For proper operation the transducer has to be fixed firmly and vertically because of the narrow
sound beam. Do not use long pipes with small diameters that are vibrating when the ship is
moving. It is important to decouple the transducer mechanically from the mounting structure by
rubber to avoid noise produced by vibrations going to the transducer, see figure below. The whole
transducer must be covered by water all the time, even during rough sea!
Acoustic decoupling of the transducer from the vessel using elastic material between all steel-to-steel connections.
Rubber washers (provided by INNOMAR) to be used at the transducer. Note also the ropes to stabilize the pole.
Please note the arrow on top of the transducer that points to forward direction.
!
After the mounting of the transducer, measure the exact draught of the transducer. This
value (distance from the water level to the bottom of the transducer) has to be adjusted
in the SESWIN control software (“System Setup – Settings – General – System”).
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