49
MPB-311
Mounting
7.7.4
Installing induction loops in bitumen, asphalt, or concrete
1. Cut a 50 mm deep groove into the surface or asphalt using a cutting disc. The
groove must be equally deep at every point. The corners of the groove must be
cut in a 45° angle.
Mag00085
3
1
4
2
Fig. 19:
Installing induction loop in bitumen, asphalt, or concrete
1 Groove for induction loop feed line
2 Corners cut diagonally
3
Groove for induction loop
4
Induction loop
Mag00642
2
1
3
4
5
30
150
25
50
Fig. 20:
Installing an induction loop in bitumen, asphalt, or concrete (dimensions in mm)
1 Groove with potting compound
2 Asphalt surface
3
Quartz sand filling
4
Induction loop
5 Foundation
2. Lay the loop carefully into the groove and push it down by means of a blunt
object, such as a piece of wood. The insulation must by no means be damaged.
3. To avoid slipping of the loop, fix the loop using small wooden wedges. Remove
the wooden wedges later on.
4. Route the loop supply lines through the support to the loop detector in the
support beam.
5. Measure the induction loops.
Summary of Contents for MPB-311
Page 115: ...115 MPB 311 MPB 311...
