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8.
LIMIT THE DETECTION APERTURE (PARTIAL LENS COVERING)
Sometimes the heads detection area can be too wide and it can be a potential trouble if in the area to be protected there
are tree branches, curtains, windows, etc.
In this case, it is possible to reduce the detection area by appropriately masking the lateral or intermediate beams with
adhesive tape places over the sectors of the heads lenses (beams blinding), letting them able to detect only the beams
oriented towards stable zones of the areas to be protected.
8.1.
LENS COVER
The two plastic lens covers applied over the IR heads obtain a CURTAIN EFFECT. With this lens cover, the detection opening
beam of the lens is reduced to 20°, keeping the same detection range.
The lens cover needs to be inserted on the detection head as indicated in the following figures, paying attention that the
two lateral hooks are correctly locked to the two head grooves and that the lens-cover stays well fixed to the detection head.
8.2.
ADHESIVE MASK
VERIFY THE HOOKS ARE WELL POSITIONED IN THEIR PLACES
IR HEAD WITH
LENS COVER
LENS COVER
Summary of Contents for DIRFE
Page 5: ...5 5 CORRECT USE OF THE SENSOR A B C ...
Page 19: ...19 ...
Page 20: ...20 This manual may be subject to change without notice ...
