FiberPatrol FP1150 Series, Руководство по эксплуатации продукта

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FiberPatrol components
Page 16 FiberPatrol Site Planning & Installation Guide
Service loops
Service loops provide extra sensor cable for making future repairs, and for making fusion splices.
A 10 m (33 ft.) service loop is recommended for every 300 m (984 ft.) of installed sensor cable. A
10 m service loop is also recommended on the hinged side of each gate that is protected by
sensor cable. In addition, a 10 m (33 ft.) splice point service loop is required for each section of
sensor cable at all splice enclosure locations. A 10 m service loop is typically comprised of 5
circular loops of cable with a 60 cm (2 ft.) diameter (see
Figure 36 ).
Isolation loops
Isolation loops are optional, but are recommended for situations where a zone needs to be
isolated from adjacent zones (e.g., gate isolation). Isolation loops are also recommended as a
buffer between detecting sensor cable and software defined non-detecting cable. Fence-mounted
isolation loops use 14 in. steel cable ties to secure 7 loops of sensor cable to the fence. The 7
loops have a 60 cm (2 ft.) diameter, which requires approximately 13 m of sensor cable (see
Figure 37 ).
Buried vault
Another method for zone to zone isolation is to move the sensor cable off the fence through
conduit and then form a 13 m (43 ft.) isolation loop inside a buried vault. The cable is then run
through another section of conduit and back onto the fence where it continues as another zone.
Figure 9 provides the dimensions for the FiberPatrol buried vault.
Figure 9 Buried vault dimensions
46 cm
69 cm
(27 in.)
(18 in.)
49.5 cm
(19.5 in.)
82 cm
(32.25 in.)
103 cm
(40.5 in.)
top view
end view side view
NOTE: dig hole 51 cm (20 in.) D X 76 cm (30 in.) W X 107 cm (42 in.) L