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Installing the sensor cable
FlexZone Product Guide
Page 29
Installing cable on chain-link fences
•
Attach the sensor cable to the secure side of the fence (the side opposite the threat).
•
Secure the cable to the fence so that it maintains a constant height above ground (i.e., if the
fence steps up a hill, the cable should also step up the hill).
•
Use UV resistant polypropylene cable ties spaced 25 to 30 cm (10 to 12 in.) apart to attach the
sensor cable to the fence.
•
Pull the cable ties until they are hand tight and the cable is snug to the fence.
•
Attach the cable ties to the center of a link (one wire) NOT at the junction of two fence wires.
•
Optionally, for increased security use two steel cable ties per fence panel in addition to the
polypropylene cable ties. Hand-tighten the steel cable tie on a fence wire adjacent to a
polypropylene cable tie to hold the cable snuggly against the fence without crushing or
distorting the sensor cable in any way. DO NOT use a mechanical tightening device.
•
DO NOT attach the sensor cable to tension wires.
•
Attach the sensor cable at least 30 cm (1 ft.) away from horizontal support bars and other
cables.
•
For a single cable pass, attach the sensor wire to the middle of the fence.
•
Avoid vertical drops greater than 1 m (3.3 ft.) when installing FlexZone sensor cable. Vertical
drops of 1 m or more can result in an area with excessive sensitivity, which may cause
nuisance alarms. Install vertical cable drops that are greater than 1 m with a minimum 15º
slope.
•
Use armored sensor cable if the cable is being installed in an area where it may be prone to
damage from vandalism, equipment, or materials.
•
Keep the ends of the cable clean and dry.
Installing cable ties
•
Using UV resistant polypropylene cable ties, secure the cable to the fence fabric at the
midpoint of the chain-link. Install the cable ties by hand, tightening them enough to hold the
cable securely against the fence.
Note
Galvanized fences occasionally have rough patches from the
galvanizing process. Avoid attaching the sensor cable at locations
where rough galvanizing can potentially damage the cable.
Note
Tap the sensor cable occasionally as you attach it to the fence and
listen for the rattle of the floating center conductor to ensure the cable is
properly conditioned.
Figure 20: Securing cable to a chain-link fence
attach the cable to the fence fabric
in the middle of a fence wire
DO NOT attach the cable to the fence
fabric at the junction of 2 fence wires
use 2 steel cable ties on each fence
polypropylene
cable tie
steel cable tie
panel in addition to the polypropylene
ties for added security
Содержание FlexZone
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