BEN Marine ANTHEA Notice D'utilisation Et D'installation page 19

10-B
The line joining the electrodes of the sensor must be perpendicular to the vessels longitudinal
axis.
ATTENTION: It is mandatory to install the sensor in a dry area. In case of sustained
immersion, it is strongly advised to use a special watertight sensor.
For vessels with a bulge bow, the area located within distance equal to twice the height of the
bulge can be disturbed. The sensor must be preferably located in the bulge. When it is not
possible to install the sensor up front, it is recommended to fix it on a streamlined bulge.
For special installation cases (bow thruster...), please contact an AMESYS/BEN Marine
certified agent.
When the sensor is to be retracted from inside the hull, which is the general case, make sure
that the sensor location is easily accessible, avoiding costly and long operations. Cargo holds,
for instance, cannot be considered as accessible; in this case, an AMESYS/BEN Marine
certified agent will advise you.
General rules for sensor installation
Before proceeding or drilling, etc. make sure that there is room enough for retraction of the
sensor and vital service work. If the hull plating is not flat enough at the selected area, it is
necessary to flatten the hull or fit a flattened hull reinforcement.
Welding the hull casing to the hull requires special care. For welding to a carbon steel hull,
use electrodes in austenitic alloy: 24 Cr, 12 Ni, 3 Mo or 20 Cr, 12 Ni, 3 Mo". Welding will be
preferably made in argon atmosphere.
All BEN hull-fittings are fitted with a plastic outer cap (part n°16 on drawing D0343). This
part is vital and shall be carefully put in place and stick using tightness cement during
installation. If broken, replace it immediately. A spare outer cap is always supplied either
with the fitting or with the spares.
Fibered plastic or sandwich hulls: plastic hulls are not as resistant to screw pressure as
metallic ones. Concerning sandwich hulls, the sandwiched materials must be replaced by a
solid wooden ring or the equivalent. On standard plastic hulls, a large surface metallic washer
can be placed inside and outside, under the condition that it is covered with plastic material
joined smoothly to the hull surface. Tightness between hull and washer must be assured. For
this type of hull, the inner part of the drilling must be covered for tightness by self
polymerizing polyester.
97MU001-F
ANTHEA OPERATION AND INSTALLATION MANUAL
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