Datasensor BWS-T2 Series - PROTECTION OF ACCESS; UNWANTED BEAM REFLECTIONS

BWS-T2 Series Instructions manual
12
2.4.2. Protection of access with BWS-T2 - 1- or more beams for arm
and body protection
Condition
: 40mm<d70mm; C0
S=1600*T+850mm
Mounting hight of the emitter(s) and reiceiver(s):
1 Pair E/R: 750mm
2 Pairs E/R: 400mm, 900mm
3 Pairs E/R: 300mm, 700mm, 1100mm
4 Pairs E/R: 300mm, 600mm, 900mm, 1200mm
Criterion: No limbs passing below the lowest beam
No limbs passing below the highest beam
No limbs passing between 2 beams
No passage between 2 beams
Highest beam 900mm, lowest beam 300mm
2.5 UNWANTED BEAM REFLECTIONS
Specular reflections from shiny surfaces in proximity or within the
beam envelope (cone) can reflect light, thus affecting the ability to
detect an intrusion into the guarded area.
The minimum distances shown in figures 7a and 7b must be respected
to satisfy the arrangement shown in figure 6b (figure 6a is not correct).