FiberPatrol Site Planning & Installation Guide
Page 41
FiberPatrol sensor cable and below ground bypasses
FiberPatrol sensor cable typically passes through conduit that is buried below ground to get from
one side of a gate to the other. There are several techniques that can be used to pull the cable
through conduit. The best method to use depends on a number of site specific factors:
•
the local climate, if the site has a temperate climate and the ground never freezes, split conduit
can be used to protect the sensor cable
•
in areas where ground freezing occurs, solid wall conduit must be used; the solid conduit must
be sealed at both ends to prevent water from entering
•
if the cable is being deployed from a cable stand, the cable can be pulled through the conduit
as it is dispensed
•
if the cable is being deployed from a trailer or truck, it will have to be pulled back to pass
through the conduit
•
a sufficient amount of cable must be pulled back for isolation loops, service loops, and gate
coverage, as required
Figure 48 Laying cable in a figure-8 pattern
30 cm (1 ft.)
30 cm (1 ft.)
60 cm (2 ft.)
60 cm (2 ft.)
