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SmartSensor Matrix
INSTALLATION QUICK START GUIDE
1
Choose a mounting height/offset
˽
If mounting on a mast arm, where the height can largely not be changed, use the table at
right to choose an offset (distance from the first lane of interest).
˽
If mounting on a vertical pole, where the offset can largely not be changed, use the table to
choose a mounting height.
˽
In general, mount the sensor about 20 ft. ± 5 ft. (6.1 m ± 1.5 m) above the road surface.
1
Prepare the sensor while still on the ground: remove the large bolts holding the
end knuckle to the mount, then use the four small bolts and lock washers to attach
the knuckle to the sensor backplate.
2
Insert the mounting straps through the slots on the mount.
3
Position the mount on the pole in the spot you chose from the mounting table in
the previous step.
4
Tighten the straps.
5
Attach the knuckle you prepared earlier to the mount using the large bolts (the
cable connector should be pointed down). Don’t tighten completely yet, as you still
need to align the sensor to the roadway.
Offset
Height
6–15 ft
12–25 ft
15–50 ft
15–25 ft
> 50 ft
25–60 ft
1
Tilt the sensor down so it is aimed at the center of the lanes of interest.
2
Adjust the side-to-side angle so that the sensor’s 90º field of view covers
the approach.
Note.
Make sure the front edge of the sensor’s footprint covers beyond the
stop bar. This allows you to detect vehicles that do not stop at or behind the
stop bar.
3
Align the sensor to the roadway
2
Mount the sensor
Note.
The mounting location for your SmartSensor Matrix sensor(s) should have already been determined as part of the design pro-
cess. If it has not been, please consult the
SmartSensor Matrix User Guide
for complete design and installation guidelines.
1
Connect a 12 AWG grounding wire to the grounding lug on the bottom of the sensor.
2
If the intersection is bonded, connect the other end of the grounding wire to the earth ground for the pole that the sensor is
mounted on. If the intersection is not bonded, run the grounding wire down the pole, alongside the cable, back to cabinet ground.
4
Ground the sensor
