Device Description HG G-71910-C | English, Revision 03 | Date: 17.09.2019
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Chapter 3 – Mounting
3.1.2 Closed Metallic Structures or Smaller Metallic Structures That Form
Loops
The antenna can be mounted directly onto metal with its bottom. The following min
-
imum distances for closed metallic and electrically conductive structures apply from
the cover on the reading side.
Figure 3
Metal-free space around antenna and transponder with closed metallic structures or
loops, side view (in the example: transponder in the roadway)
Power cables (e.g. for charging stations) must not be installed in this area around the
transponders, as any pulses could make code reading difficult or falsify the code!
3.2 Transponder
The maximum reading distance for all transponders can only be achieved when the
minimum distance to metal surfaces is maintained. To clarify the configuration, it is
essential to carry out tests!
As mentioned above, it is recommendable to maintain the minimum distances with
-
in the metal-free area (section 3.1.2 above). The impact on positioning accuracy and
range also depends on the size and distance of metal parts.
Mounting possibilities for transponders:
On the road surface.
Flush in the carriageway with sealing compound.
The reading distance is the distance between the reading side of the antenna and
the top side of the transponder.
metal-free area
50 mm (Nominal Reading Height)
100 mm
100 mm
100 mm
50 mm
Roadway
Vehicle
Antenna
Direction of travel
100 mm
Cover
