NOTES ON MAKING THE MAGNETIC LOOP WITH A 9 m CABLE
If using the automatic AccessPRO INDUSTRIAL bollard, two inductive magnetic loops must be created
to detect metal
weights (cars), one in front of and another behind the bollard. The standard dimensions of these loops is:
width 1.80 m - length 3.00 m.
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diameter of approximately 9mm and suitable protection, laid directly in the ground without the
need for conduits.
When laying the loop, it’s necessary to check that there are no electrowelded metal meshes nearby. If this is
the case, it’s essential that the mesh is at least 25 cm below the loop (otherwise, a 30 cm section of the mesh
below the loop must be removed).
The loop needs to be placed 5-7 cm below the road surface. If there is any porphyrite or similar, the blocks
of porphyrite must be lowered to allow for the loop to be laid at this depth. Alternatively, the loop can be laid
between one block and another with a fret pattern.
The loop is connected to a line that transmits the signal to the movement control station.This consists of a
special insensitive cable to be laid in a conduit with a 20-25 mm diameter.
