cias ERMO 482 - Page 30

 CIAS Elettronica S.r.l. Ed. 2.2
Installation Handbook page 29 to 43 ERMO 482
2.5 Amplitude of the Sensitive Beam
The amplitude of the Sensitive Beam depends on the distance between the transmitter and the
receiver, and on the sensitivity adjustment set. The figures below state the diameter half-way of
the sensitive beam section (based on the length of the section) in case of maximum and
minimum sensitivity (figure 3 and 4). With a medium sensibility, the minimun space recomend
for corner crossing is 3,5 m. For wall installation, the minimum distance from the wall to the
centre head are 30 cm.
Diameter
Half-Way (m)
Maximum
Sensitivity
Minimum
Sensitivity
Lenght of
the Section (m)
Figure 3 Diameter of sensitive beam at the half-section length (ERMO 482/ 50) (Free
space)
Diameter
Half-Way (m)
Maximum
Sensitivity
Minimum
Sensitivity
Lenght of
the Section (m)
Figure 4 Diameter of sensitive beam at the half-section length (ERMO 482/ 80-120-200)
(Free space)
Remark:
that for the ERMO 482 equipment, the Sensitivity regulation to be considered for obtaining the
dimensions of the sensitivity beams half-way of the section, is that of the alarm threshold.
The higher the threshold the lower the sensitivity, and vice versa.