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Doc. 20780_03
Planning and Commissioning Manual
ADPRO Passive-Infrared (PIR) PRO Series by Xtralis
The detector is now ready for alignment.
6.1.4
Alignment
The detection range of a PIR detector is not limited but a function of size, speed and
temperature contrast of a target against its background. The detector should be aligned so
that a natural or artificial background at the end of the range terminates the field of view.
Where the detection range has to be limited, a terminating screen can be used to avoid
detection of targets beyond the wanted range.
Vertical alignment is optimal when the upper edge of the field of view is at 1.5 to 2.5 m above
ground at the end of the required detection range provided that the field of view is properly
terminated. Coarse alignment can be done visually by looking along the grove on top of the
detector.
Accurate fine alignment is easily achieved with the help of the Alignment Telescope AD 851,
which can be placed on top of the detector for this purpose.
Preparation
NOTE!
For an optimal function of the detector:
Limit the detection range to a natural or artificial background
(e.g. a wall).
Do not align the detector to a mesh wire fence.
Ensure that no moving objects (e.g. branches, bushes, fences)
or body of water are within the detection zone.
6.1.4.1 Coarse Alignment
To align the detector, follow these steps:
1.
Look along the groove on the detector’s cover,
2.
Locate a person or fixed-point at the nominal detection range and approximately 1.50
m (5 ft) height,
