
Site survey
Page 20
FP400 Product Guide
Fence condition
The fence must be properly installed, tensioned, and maintained to provide effective intrusion
detection with the FP400 sensor. The fence should be uniform in height and quality, and should be
high enough to present an effective barrier against climb-over intrusions. It is also recommended
that a climb-over barrier, such as barbed wire or concertina, be installed along the top of the fence.
The condition of the fence is critical to the efficient operation of the FP400. Breaks in the fence
structure, or slack portions of fence fabric, will inhibit the transmission of fence vibrations to the
sensor cable. Poor fence conditions can also cause metal on metal contact noise during inclement
weather that will result in nuisance alarms.
Supported fence types
•
chain-link
•
welded-mesh
•
expanded metal
•
palisade
It is possible to use the FP400 sensor to protect other fence types, as well as buildings and walls.
However, revised installation techniques are required.
Site analysis checklist
Note
Fences used in conjunction with the FP400 sensor must meet industry
standards for security fences.
To prevent nuisance alarms, remove or secure any signs, loose fittings,
locks, gate hardware, nearby vegetation, and anything else that can
move and make contact with the fence.
Note
Senstar recommends installing the sensor cable on a representative
section of the building or wall to test and verify that the detection
sensitivity meets the security requirements, before installing a complete
system.
Description
create a site plan
accurate CAD drawings with precise measurements
detailed description of fences (type, condition, height, fence rails, climb over
deterrent hardware, other cables, conduit, or signs attached to fence)
detailed description of gates (type, condition, location, size)
locate all obstacles on site survey
spur fences or fences abutting the perimeter fence
sidewalks, paths, roads, driveways
buildings, walls and other structures
utilities (sewers, pipes, conduits and electrical cables, etc.)