Wavetronix SmartSensor Matrix (SS-225) - User Guide - Manual (Page 15)

14 CHAPTER 1 • INSTALLING THE SMARTSENSOR MATRIX
Warning
Use caution when installing any sensor on or around active roadways. Serious injury
can result when installation is performed using methods that are not in accordance
with authorized local safety policy and procedures. Always maintain an appropriate
awareness of the traffic conditions and safety procedures as they relate to specific
locations and installations.
Sensor Mounting Guidelines
The sensor is fairly insensitive to mounting height, but every site will vary based on lane
configuration and the presence of barriers and structures in and around the detection area.
The following table will help you determine how high to mount the sensor (see Table 1.1).
These figures are only suggestions, but a good rule to follow is—the farther away the first
lane is to the sensor, the higher you will want to mount the sensor to avoid occlusion.
Closest Lane Sensor Height
6–15 feet 12–25 feet
15–50 feet 15–25 feet
> 50 feet 25–60 feet
Table 1.1 – Suggested Mounting Guidelines
Note
In certain conditions, lanes that have stop bars or detection zones placed at extended
range may show some loss in performance, even with a proper mounting height. This
is more apparent at locations with many travel lanes or where detection zones are
placed near the far edges of detection. If you have any questions regarding the use
of SmartSensor Matrix at a particular location, please contact Wavetronix Technical
Services or your authorized Wavetronix dealer for more information.
Use the following guidelines to determine the best mounting height, then place your sensor
accordingly:
˽ In general, the sensor should be placed at a height of roughly 20 ft. (6.1 m), give or take
5 ft. (±1.5 m).
˽ The maximum recommended mounting height for the SmartSensor Matrix is 60 ft.
(18.2 m). The minimum is 12 ft. (3.6 m). Placing the sensor above or below these limits
will adversely affect detection accuracy.