What position?
A roof is considered flat unless the height of the apex is greater then 0.6m. If the roof is flat the
ZetaBeam system can be placed anywhere under the roof between
0.3m and 0.6m
below the roof, up to
a maximum height of
40m
from the floor. The ZetaBeam has a detection area of
7.5m
either side of the
beam. If the roof is considered to have an apex, place the ZetaBeam system
0.3m to 0.6m
down from
the top of the apex, up to a maximum height of
40m
from the floor. The maximum protected area either
side of the beam can be extended by 1% for every degree of roof pitch, see the example below:
Warning:
so that the beam works effectivaly, ensure
the beam is not obstructed in a 1m diameter clear
line of sight along its entire axis
Note
. Careful design consideration should be made when positioning beams and reflectors in
environments that can be susceptible to condensation i.e. warehouses near to water that have areas
open to the outside environment or that are exposed to quick extreme changes in temperature. To assist
with this problem that can affect all beam detectors we produce an
anti-fog kit
comprising of a specially
coated reflector and lens cover. Individual reflectors are also available. The standard ZetaBeam and
range kits can be supplied as anti-fog sets as a special order.
0.3m - 0.6m
40m max
2.7m min
Field of view should be a 50cm radius from
the centre or the beam
Flat roof
0.3 -0.6m
15m detection area
Extra coverage due to apex angle
10°
0.3 -0.6m
15 + (15 x
10%
) = 15m + 1.5m = 16.5m
16.5m detection area
8.25m
8.25m
Min 0.5m
You should always position the beam at least 0.5m away from any protrusion
Wall
Wall
