8540581 - 29/09/2010 - Rev.10
5
The recommended Cf factors are shown in the table below:
ENVIRONMENTAL CONDITION
CORRECTION FACTOR Cf
Fog 0.25
Steam 0.50
Dust 0.50
Dense fumes
0.25
If the device is installed in places that are subject to sudden changes in temperature,
the appropriate precautions must be taken in order to prevent the formation of
condensation on the lenses, which could have an adverse effect on monitoring.
POSITION
The position of the
AXE BK
Emitter and the
AXR BK
Receiver must prevent access to the
danger zone from above, below and from the sides, unless at least one of the optical beams
has been intercepted. Some useful information regarding the correct position of the barrier is
shown in the figure below.
Incorrect positioning of barrier
Correct positioning of barrier
Figure 2
