Minimum Distance To Antenna In Accordance With Fcc - Siemens SIMATIC RF610T ATEX System Manual

Safety Information
2.3 Safety distance to transmitter antenna
N N ote
R R educed maximum radiated power with RF600 readers
SIMATIC RF610R and RF615R (ETSI) readers have a maximum transmit power of 400 mW.
The radiated power depends on the antenna cable and the antenna used, but must not
exceed 2 W ERP.
The SIMATIC RF650R (ETSI) reader has a maximum transmit power of 1 W. The radiated
power therefore depends on the antenna cable and the antenna used, but must not exceed
2 W ERP.
The SIMATIC RF680R (ETSI) reader has a maximum transmit power of 2 W. The radiated
power therefore depends on the antenna cable and the antenna used, but must not exceed
2 W ERP.
The SIMATIC RF685R (ETSI) reader has a maximum radiated power of 2 W ERP. The
safety clearance is therefore at least 0.24 m.
When using Siemens products and with suitable configuration via the WBM, the high limits
cannot be exceeded.
2 2 .3.3

Minimum distance to antenna in accordance with FCC

For the maximum permitted radiated power in accordance with FCC (4 W EIRP), the "safety
distance" is d = 0.26 m. This means that personnel should not remain closer than 26 cm to
the transmitter antenna for extended periods (several hours without interruption). Remaining
within the vicinity of the antenna for brief period, even repeated periods (at a distance < 0.26
m) is harmless to health according to current knowledge.
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System Manual, 06/2019, J31069-D0171-U001-A22-7618
SIMATIC RF600