Lens
Standard lens no. 15 covers a range of 40 metres and an an-
gle of 90°, and is suitable for most premises. A choice of option-
al lenses is available. When someone walks straight across the
eld it generates a strong signal in the sensor element. When
someone moves in line with the eld (towards or away from
the detector) it generates a much weaker signal. The detector
should therefore normally be placed so that people pass straight
across (at 90° to) the eld produced by the lens. The ideal
placement is almost always to install the detector in a corner.
NOTE! The detector will not work without a lens!
Choosing a lens
There are a number of different lenses for PD-33 DL that can
be used for different purposes. Long-range lenses, e.g. for cor-
ridors up to 80 m long (lens 34 or 47). Lenses with many tightly
packed detection elds, e.g. for classrooms (lens 51).
PD-33 DL is supplied as standard with lens number 15. This
has 58 detection elds that cover three levels. It has a range of
40 m and is suitable for installation in a corner.
The detector should be mounted at a suitable height and aimed
at the part of the body that radiates most energy (the torso). A
suitable installation height is often 1.9–2.2 m.
Replacing and adjusting lenses
Replacing the lens
1. Release the lens clips
from inside the detector cover.
2. Remove the clips from the outside
and remove the old lens.
3. Fit the new lens with the
ridged side outwards. The lens number should
be at the top right
corner (seen from the front).
Adjusting the lens
The vertical angle is adjusted by moving the circuit board up or
down. The horizontal angle is adjusted by moving the lens to the
right or left.
Adjusting the vertical angle
The vertical angle of the detection eld is adjusted by moving
the circuit board up or down. The scale shows the angle be-
tween the upper eld of the lens and an imaginary horizontal
line. If the circuit board is moved upwards it lowers the detection
eld, and vice versa. The vertical adjustment of the circuit board
is preset at -5°. The recommended installation height for best
detection is 1.9–2.2 m.
Masking lens elements
Lens elements can be masked to limit the detection area.
Self-adhesive aluminium foil tape, like that used to protect win-
dows, will block 100 per cent of thermal radiation.
Accessories
Level selector
NP-2T DL
• Controls DALI light ttings using
broadcast commands.
• No programming required.
• Built-in power supply for
DALI bus.
• Supply voltage 230 V AC.
• Add Detector Time. Allows detec-
tor delay time to be set in
addition to time set by detector.
NP-3T DL also offers:
• Comfort lighting control, which
combines daylight adjustment
via a light sensor, and fuzzy log-
ic, which continuously adjusts the
lighting between two levels: “Lux
at Max” and “Lux at Min”. See al-
so the section on “Comfort lighting
control” in
the manual for NP-3T DL.
Protective grille
Used for installation in vulnerable
locations, such as sports halls. There
is also a model that can be used to in-
stall the detector at 45° in combination
with an angle plate on a wall.
Order no. 13038,
large; 13038A,
corner; 13039.
See also product catalogues.
Universal mountings
BR1, BR2, BR3 can be used where
normal placement (corner mounting) is
not suitable or possible.
Order no. 13085, -86, -87,
Lenses
See Extronic’s product catalogue or the website for information
on choosing a suitable lens.
Technical specication
Vertical adjustment: +10° to -20° calibrated scale.
Horizontal adjustment: Up to 30°.
Detection area with
standard lens 15:
Max. reach 40 m at 90°.
Voltage: Supplied by DALI bus.
Current: Max. 12 mA.
Start-up time: < 2 minutes.
LED: Red IR, can be disconnected.
Detector: Dual-element, low-noise pyroelectric IR detector.
Enclosure: IP42.
Dimensions (W X H X D): 70 x 102 x 50 mm.
Weight: 93 g.
Declaration of conformity with:
- EMC Directive 2004/108/EC
- RoHS Directive 2011/65/EC
When the level detector reaches the end of its useful life
it must be recycled at an approved recycling facility.
Extronic Elektronik AB +46 8 609 29 00 10 2015-12-14