Simrad ES70 - INSTALLATION REV A Installation Manual page 127

Example: Medium sized circular transducer without clamping ring
The illustration below shows a transducer blister designed for a medium sized
transducers. The same blister design principles apply. Note that the transducer is
mounted without a clamping ring, which makes it necessary to use a different mounting
ring design.
Figure 30 Medium sized circular transducer without clamping ring
Streamlined
A
blister
B Mounting ring
C Bolt
Self-locking
D
threads
E Air outlet
F Forward
G Transducer
cable
H Transducer
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 to each side
of the blister.
Common guidelines
The best performance is obtained with a blister height of 40 cm or more. A streamlined
shape and rounded edges reduce the flow noise. A vertical leading edge or front will
guide the aerated water to the sides of the blister. The orientation of the blister should
follow the water flow.
343522/A
Transducer Installation
125