Siemens SIMATIC RF300 System Manual page 166

Readers
5.3 SIMATIC RF340R/RF350R
Using the corresponding antennas in hazardous areas for gases
While the readers stay in safe areas or in category 3 hazardous areas, the corresponding
antennas can be operated as simple equipment in hazardous areas via the intrinsically safe
antenna connection (ic).
Ambient temperature range
-25 °C < Ta < +70 °C
Ignitions of gas-air mixtures
When using the antenna, check that the temperature class is complied with in connection with
the requirements of the area of application.
Non-compliance with the permitted temperature ranges while using the antenna can lead to
ignitions of gas-air mixtures.
Using the reader in hazardous area for dust
The equipment is suitable for dusts whose ignition temperatures for a dust layer of 5 mm are
higher than 80 °C (smoldering temperature).
Ambient temperature range
-25 °C < Ta < +70 °C
Ignitions of dust-air mixtures
When using the reader, check to make sure that the temperature values are adhered to in
keeping with the requirements of the area of application. Non-compliance with the permitted
temperature range while using the reader can lead to ignitions of dust-air mixtures.
Using the corresponding antennas in hazardous areas for dust
The equipment is suitable for dusts whose ignition temperatures for a dust layer of 5 mm are
higher than 80 °C (smoldering temperature).
Ambient temperature range
-25 °C < Ta < +70 °C
166
WARNING
WARNING
Temperature class
T4
Temperature value
T80 °C
Temperature value
T80 °C
System Manual, 02/2021, C79000-G8976-C345-09
SIMATIC RF300