Wavetronix SmartSensor Advance User Manual page 11

Definition. Offset
is the distance
between the sensor
and the center of the
lanes of interest.
Note. If your
intersection is the
type where the signal
heads attach to two
vertically aligned
span wires, you can
mount the sensor
on this span wire
using the Wavetronix
span wire mount and
other equipment. For
more information,
see Using the Span
Wire Mount with
the SmartSensor
Advance in the
knowledge base
on the Wavetronix
website.
SmartSensor Advance User Guide
10
•
Make sure the sensor has a clear view of the area you want to
˿
detect. Pay particular attention to signs, poles, signal heads and
mast arms.
Make sure the sensor will detect vehicles for several feet
˿
before the first detection zone.
Keep in mind that the greater the offset, the more you'll have to
˿
roll the sensor to align it.
Keep cable lengths in mind when you pick mounting locations;
˿
when you use the Wavetronix cable, cables can be as long as
1500 ft. (457.2 m) if you're using 24 VDC and RS-485 commu-
nications; for longer connections, consider alternate wired and
wireless options.
The mounting location will vary based on your intersection and
˿
your needs. The four locations in the image below are recom-
mended because of their clear view of the detection area.
Figure 3. Recommended mounting locations in a mast arm intersection
Figure 4. Recommended mounting locations in a span wire intersection