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OTES ON INSTALLING THE MAGNETIC LOOP WITH A 9 m CABLE
If using the automatic STOPPER T pop-up roadblock, two inductive magnetic loops must be created to detect metal weights (cars), one in front of and
another behind the roadblock. The standard dimensions of these loops is:
width 1.80 m - length 3.00 m
.
Other sizes are possible if the case warrants this.
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.
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 created by using a special electric cable with a diameter of approximately 9 mm 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 50 cm section of the mesh below the loop must be removed).
INSTALLATIONS SEQUENCE STOPPER T 275 A
