CIAS Elettronica S.r.l. ERMUSA 30, Руководство по установке

Страница: 27 / 44

CIAS Elettronica S.r.l. Ed 2.0
Installation Handbook
page 26 to 44 ERMUSA
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 7 and 8).
With a medium sensibility, the minimum space
recommended for corner crossing is 3,5 m . For wall installation, the minimum distance from
the wall to the centre head is 30 cm.
2
4
6
8
10
12
14
16
18
20
10 20 30 40 50 60 70 80 90 100
Maximum
sensitivity
Half range
sensible horizontal
zone dimension [m]
Range [m]
Minimum
sensitivity
Figure 7 Free space Horizontal dimension of the sensible beam at half-range
2
4
6
8
10
12
14
16
18
20
10 20 30 40 50 60 70 80 90 100
Maximum
sensitivity
Half range
sensible vertical
zone dimension [m]
Range [m]
Minimum
sensitivity
Figure 8 Free space Vertical dimension of the sensible beam at half-range
Note:
that for the ERMUSA 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.