OBID
®
Installation
ID AWE 3000/6000.A-A
FEIG ELECTRONIC GmbH
Page 41 of 55
H40591-4de-ID-B.doc
E N
G
L I S H
lo o p pa rt 1
lo op pa rt 2
eva lu atio n un it (X1 : S 1 a nd S 4 )
com poun d-filled con ne cto r b o x
in d irect v icin ity to lo op p arts
Illustr. 2:
terminal connecting plan for a local combination of two induction loops
Should you wish any further information regarding loop installation in roadways, please ask for our
leaflet "vehicle detection with the help of an induction loop detector", which deals with this problem
in a separate chapter.
Chart 3.1 lists possible dimensions of loop parts and the distance between them, if there is no ar-
mouring in the ground. Chart 3.2 contains geometries for the installation above armoured ground
(please refer to chapter
10.3.2. Surrounding materials
). Those lines marked with an asterisk are
the recommended loop sizes for all standard applications.
Loop part, non-armoured ground
Length L
m
Width B
m
Distance
A
m
No. of turns
Inductivity
µH
Width of detec-
tion area
1
1,5
0,5
5
280
±
10%
Approx. 1,4 m
1
2,0
0,5
5
300
±
10%
Approx. 1,9 m
* 1
2,5
0,5
4
270
±
10%
Approx. 2,4 m
1
3,0
0,5
4
300
±
10%
Approx. 2,9 m
Chart 3.1:
sizes of loop parts for ground antennas (without armouring)
Loop part above armoured ground
Length L
m
Width B
m
Distance
A
m
No. of turns
Inductivity
µH
Width of detec-
tion area
1
1,5
0,3
5
280
±
10%
Approx. 1,4 m
1
2,0
0,3
5
300
±
10%
Approx. 1,9 m
* 1
2,5
0,3
4
270
±
10%
Approx. 2,4 m
1
3,0
0,3
4
300
±
10%
Approx. 2,9 m
Chart 3.2:
sizes of loop parts for ground antennas (with armouring)