CIAS Elettronica S.r.l.
Ed. 2.2
Installation Handbook
page
27
to
43
ERMO 482
2.2 Number of Sections
Having to design protection with volumetric barriers of a closed perimeter, besides having to
split the perimeter within a certain number of sections that take into account the management
need of the entire plant, it must be remembered that it is always preferable to install an even
number of sections. This consideration is bound to the fact that the likely reciprocal
interferences between adjacent sections are annulled should at the vertices of the polygon
(cross), resulting from the installation of the various sections, be installed two equipment with
the same name, two transmitters or two receivers. It is evident that this might occur only if the
number of sections is even. Should it not be possible to have an even number of sections then
some careful considerations must be made on interferences that might likely occur in order to
find the vertex point where retained best to place the transmitter near the receiver. The
following pictures show some typical cases for which the most correct solution is given.
RIGHT
RIGHT
WRONG
WRONG
RIGHT
RIGHT
Figure 1
Summary of Contents for ERMO 482
Page 47: ...NOTE...
