Traffic rated in-road/burial antenna
Required tools:
•
Asphalt saw or auger: saw capable of cutting 127 mm (5 in.) in diameter and 95.3 mm (3.75 in.) deep into a
road surface or ground
•
Asphalt chisel
•
Hammer drill with 19.1 to 25.4 mm (¾ to 1 in.) asphalt drill bit (for antenna cable installation)
•
Sakrete asphalt mix (Asphalt patch)
•
Bondo; Mar-Hyde P606 Traffic Detector Wire Loop Sealer or equal
•
Shovel, if placing in the ground
The traffic rated in-road/burial antenna is intended for burial beneath the road surface or ground adjacent to a
manhole or vault that is being monitored (
Figure 8
).
N O T I C E
The antenna should be installed in the road approximately 152.4 to 203.2 mm (6 to 8 in.) from the manhole or vault
containing the flow meter. Make sure to drill outside of the manhole ring (steel).
1.
Unpack the antenna (
Figure 7
) or disassemble the antenna from the instrument.
2.
Excavate a hole or trench in the road surface or ground approximately 127 mm (5 in.) in diameter (or square)
and 95.3 mm (3.75 in.) deep.
3.
Select the closest position from the excavated hole to the manhole. Drill a 19.1 to 25.4 mm (¾ to 1 in.) hole
from the selected position to the manhole. Make sure to drill the hole below the steel manhole cover support
ring (
Figure 8
,
2
).
4.
Put the antenna cable through the drill hole into the manhole or vault.
5.
Install the antenna in the excavated hole. Pull the antenna cable taut. Locate the antenna so that the top of
the antenna is minimum 6.4 (¼ in.) to 12.7 mm (½ in.) maximum below the road or ground surface. Make sure
the antenna sits safely in the hole.
6.
Attach the antenna cable to the antenna connector.
7.
Make sure that the antenna is working by placing a call from the instrument.
8.
When the operation of the antenna is confirmed, permanently bury the antenna.
a.
Insert asphalt mix around the antenna and pack it in place. Make sure the antenna is sitting firmly on a
solid base and cannot be rocked back and forth.
b.
Install the asphalt mix around the antenna. The mix should be level with the road surface but not over the
antenna surface.
c.
Pour the Bondo sealer on and over the asphalt mix and over the top of the antenna. There should be no
more than 6.4 mm (¼ in.) of Bondo sealer over the top of the antenna.
Figure 7 Traffic rated in-road/burial antenna
5
