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EALISATION OF THE SENSITIVE ELEMENT

The  detectors  are  suitable  for  loops  made  up  with  an  insulated  copper
wire with a cross-section of at least 0.5 sq. mm. Preferably use twisted
copper  wires  with  at  least  20  twists  per  metre  to  connect  the  detector
to  the  loop.  Jointing  in  the  loop  wires  and  in  the  twisted  cable  is  not
recommended. If unavoidable, jointings should be welded and sealed in
an appropriate watertight junction box to ensure best detector operation.
If the wires used for the twisted cable are especially long or in proximity to
other power cables, shielding of said wires is recommended. Earthing of
the shield should only be made at the extremity of the detector.
Excepting  special  cases,  the  detection  loops  should  be  rectangular.
Install  with  the  longer  sides  placed  at  right  angles  in  the  direction  of
vehicle  movement.  These  sides  should  ideally  be  kept  at  a  meter  one
from the other. Loop length is a function of the width of the road surface
to  be  monitored. A  distance  of  no  more  than  300  mm  is  recommended
between the loop and each edge of the road surface. For loops running
over a perimeter of more than ten metres two wire windings are normally
employed, while for loops with a lower perimeter three or more windings
are  required,  and  four  windings  are  required  for  loops  with  a  perimeter
below six metres.

In order to reduce possible troubles, adjacent loops should be so
laid as to alternate three and four windings.

All permanent loop components must be secured to the road surface (Fig.
1) in appropriate grooves made using masonry cutting tools or the like. A
cross-cut at a 45° inclination must be made at the circuit angles so as to
prevent the risk of the loop cable being damaged in proximity to the apex
of the right angles.
Nominal groove length: 10 ÷ 15 mm.
Nominal groove depth: 30 ÷ 50 mm.
The  loop-detector  connection  cable  must  also  be  laid  in  an  appropriate
groove running from one of the circuit angles along the circuit perimeter
to  the  road  surface  edge. To  ensure  wiring  continuity  between  the  loop
and  connection  cable  allow  for  a  long  enough  lead  to  reach  as  far  as
the  detector  before  inserting  the  cable  inside  the  loop  groove.  After
laying the required number of wire windings in the groove along the loop
perimeter, route the wire towards the road edge through the connection
cable groove.
It  is  advisable  that  connection  cable  length  not  exceed  100  metres. As
loop  sensitivity  diminishes  proportionally  to  connection  cable  length  the
latter should be kept as short as possible.
Loops are secured to road surface by means of a quick-drying compound
containing epoxy resin or asphalt mastic applied hot.
In the case of two contiguous loops, keep a minimum distance of at least
two metres between each.

Note:

The inductive activity and hence the sensitivity of the loop detection

ACG9063

and

ACG9060

are two undecal, skirt-board, electromagnetic

detectors especially designed and built for the management of magnetic
loops and for generating two command signals upon a metal body of
considerable size, such as a motor vehicle, motor cycle, etc., passing
over them.

ECHNICAL FEATURES

Power supply

Consumption

Connectable loop

Number of outputs

Types of outputs

Output 1 (OUT1)

Output 2 (OUT2)

Relay contact capacity

Signal

Working temperature

Size / Weight