Impact On The Transmission Window By Metal - Siemens SIMATIC Ident System Manual

4.3.4

Impact on the transmission window by metal

In general, the following points should be considered when mounting RFID components:
● Direct mounting on metal is allowed only in the case of specially approved transponders.
● Flush-mounting of the components in metal reduces the field data; a test is recommended
in critical applications.
● When working inside the transmission window, make sure that no metal rail (or similar
part) intersects the transmission field.
The metal rail would affect the field data.
● With readers with a large antenna surface (e.g. RF260R) for reasons of communication
reliability, when the transponders are flush mounted in metal, a metal-free space around
the transponders is recommended. This metal-free space should match the size of the
antenna surface.
The impact of metal on the field data (S
values in the tables describe field data reduction and show the reduced range as a
percentage. The range relates to use in a non-metallic environment. A value of 100% means
no influence on the range.
Note
Possible reader-transponder combinations
The tables of the following section show the possible reader-transponder combinations.
4.3.4.1 Impact on the transmission window by metal
With RF300 transponders
Table 4- 32
Transponder
RF320T
RF330T
SIMATIC RF300
System Manual, 07/2016, C79000-G8976-C345-0x
Reduction of field data due to metal, range as %: Transponder and RF310R
Without metal
1)
On metal; distance 20 mm
Flush-mounted in metal;
distance all round 20 mm
Without metal
On metal; distance 0 mm
Flush-mounted in metal;
distance all round 10 mm
Flush-mounted in metal;
without surrounding clearance
, S , L) is shown in a table in this section. The
g a
RF310R reader
Without metal
100
100
80
100
100
85
30
Planning the RF300 system
4.3 Installation guidelines
On metal Flush-mounted
in metal
(20 mm all-
round)
95 80
80 70
70 60
95 80
85 75
80 70
30 25
65