SG-BWS-T4
13
Use of deviating mirrors
The control of any dangerous area, with several but adjacent access sides, is possible using only one
safety device and well-positioned deviating mirrors.
The figure shows a possible solution to control three different access sides, using two mirrors placed
at 45° with respect to the beams.
Fig. 11 Deviating Mirros
The operator must respect the following precautions when using the deviating mirrors:
It is very hard to align the receiver and the transmitter when using deviating mirrors: a tiny
angular shift of the mirror is enough to have a misalignment.
The minimum safety distance (S) must be respected for each single section of the beams.
The effective operating range decreases by about 15% by using only one deviating mirror, the
percentage further decreases by using 2 or more mirrors (for more details refer to the
technical specifications of the mirrors used).
The presence of dust or dirt on the reflecting surface of the mirror causes a drastic reduction
in the range.
mirror
mirror
DANGEROUS
AREA
