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Siemens SIMATIC RF300 System Manual Page 62

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RF300 system planning
4.5 Installation guidelines
Flush-mounting
Flush-mounting of transponders and readers
62
Problem
Flush-mounting of transponders and
readers is possible in principle.
However, the size of the
transmission window is significantly
reduced. The following measures
can be used to counteract the
reduction of the window:
Remedy:
Enlargement of the non-metallic
spacer below the transponder
and/or reader.
The transponder and/or reader are
10 to 20 mm higher than the metal
surround.
(The value x ≥ 100 mm is valid, e.g.
for RF310R. It indicates that, for a
distance x ≥ 100 mm, the reader
can no longer be significantly
affected by metal.)
Remedy:
Increase the non-metallic distance
a, b.
The following rule of thumb can be
used:
Increase a, b by a factor of 2 to 3
over the values specified for
metal-free areas
Increasing a, b has a greater
effect for readers or
transponders with a large limit
distance than for readers or
transponders with a small limit
distance.
SIMATIC RF300
System Manual, 01/2009, A5E01642529-03

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