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Siemens SIMATIC RF 300 System Manual Page 32

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RF 300 system planning
4.4 Installation guidelines
Flush-mounting
Flush-mounting of transponders and readers
4-16
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 RF 310-R. It indicates that the
reader is no longer affected
significantly by the metal at a
distance of x ≥ 100 mm.)
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.
System Manual, 05/2005, (4)J31069 D0166-U001-A1-7618, --
RF 300

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