Instruction manual

Chapter 5 Installation CVS-128
5-6 0093112802-00
5.3 Installation of Transducer
The standard installation of this echo sounder is shown in figure 5.6.
Figure 5.6 Installation of Transducer
In case of Inner-hull
Using the optional inner-hull kit (MFB-04), install the transducer to the inner side of ship’s bottom.
Caution on installation
(1) Select the location where no bubble is
generated during navigation.
(2) Select the relatively thin location of ship’s
bottom.
(3) Be sure to remove oil on the contact
surface. File the contact surface with sand
paper (#400) so that the adhesive strength will
increase.
(4) The adhered surface will dry in about two
hours.
(5) Leave the unit for a whole day and fill in
the coolant. More than 80 % of the transducer
should be submerged in the coolant.
Caution: Confirm a place of the installation of inner-hull in the manufacturer of the ship
and so on. The inner-hull device is for more effective performance method. The gain
falls in comparison with the through-hull performance dramatically. Low frequency (50
kHz) may not be used due to large signal attenuation. Depth range performance using
200 kHz Transducer in case of inner-hull will also be less about 50% than that of
through-hull.
Caution: In the case of fishing boats, FRP contained air bubbles and foarmed materials
that would prevent ultrasound from penetration have been likely used. Therefore, even
locations that are convenient for installation may be locations where attenuation of
ultrasound is not low enough.
Figure 5.7 Inner-Hull installation