Device description RFM - HF RFID Series
Leuze electronic
RFM - HF RFID Series
17
TNT
35/7-2
4
V
Figure 3.8:
Reading from below (skid)
The detection field can only be attenuated, and the function thus impaired, by metal surfaces
and/or fluids on the transponder or RFM housing.
For this reason, we recommend the use of a nonmetal spacer between transponder and
base (e.g., spacer 50 HT which fits the disc transponders with a diameter of 50mm),
whereby a spacer height of 10mm is sufficient for a range of approx. 50mm.
For the read/write system, it is recommended that a space in front of and along the sides
equal to the "device dime half the operating range" be kept completely free of metal
in order optimize performance (reading speed and operating range).
If, due to structural reasons, a metal surface is to enclose most of the device, a slit should
be sawed into one side of the surface in order to interrupt the metal short circuit for the
detection field.
Acceptable function and operating range can be achieved in this way even in metal.
