2
Positioning
The actual detection range of the sensors depends on
the mounting height. For the EK-DH4-TP sensor, at a
standard mounting height of 2.5 m, presence detection
range (for small movements) is about 10 to 14 meters
of diameter, while movement detection range (person
walking through the detection area) is about 32 meters
of diameter.
Ceiling mount
Wall mount
i
The optimal range is achieved walking through several
portions of the detection area.
The recommended mounting height varies from 2 m up
to 3 m.
Since the detector responds to temperature change, be
aware that following conditions may cause lower sensi-
tivity:
• In very foggy days, the sensitivity may be less due to
moisture collecting on the lens.
• In very hot days, the sensitivity may be less since high
ambient temperature is close to body temperature.
• In very cold days when heavy clothing is worn, espe-
cially if the facial area is covered, very little heat will
be emitted from the body causing the unit to be less
sensitive.
Please also verify following conditions during installation:
•
Avoid pointing the detector toward objects with highly
reflective surfaces, such as mirrors, glass, etc.
•
Avoid mounting the detector very close to heat sources,
such as heating vents, air conditioners, lights, etc.
•
Avoid pointing the detector toward objects which may
sway in air currents, such as curtains, tall plants, etc.
Limitation of the detection area
The detection area can be limited, in order to avoid
unwanted activations, by means of the supplied optical
shielding filters.
Cut the supplied shield to limit the detection area as in
following figure. The shield can be cut both in sections
(for radial limitation) and in length (for range diameter
limitation):
