cias ERMO 482 - Page 31

 CIAS Elettronica S.r.l. Ed. 2.2
Installation Handbook page 30 to 43 ERMO 482
2.6 Length of the Dead Zones near the equipment
The length of the Dead Zones near the equipment is based on the distance of the equipment
from ground, on the sensitivity set on the receiver and on the type of antenna used.
With regard to the considerations stated above, and based on plant requirements, the
equipment must be installed at a certain height from ground. In mean plant the height must
be 80 cm. (90cm for 50m barriers), from the ground and the centre of the equipment.
With medium sensitivity setting, the suggested crossing overlap is 5 m., for the 80-120-
200 m. versions and 3,5 m. for the 50 m. version.
Minimum
Sensitivity
Length of the
Dead Zone
Installation
Height (cm)
Maximum
Sensitivity
Figure 5 ERMO 482 -50: Dead zone length near the equipment versus installation height.
Installation
Height (cm)
Minimum
Sensitivity
Maximum
Sensitivity
Length of the
Dead Zone (m)
Figure 6 ERMO 482. 80-120-200: Dead zone length near the equipment versus
installation height.
5 M
80-85 cm
Dead Zone
Dead Zone