Siemens SIMATIC RF300 System Manual page 324

ISO transponder
8.7 MDS D139
Identification
The identification is as follows:
8.7.5.1 Use in hazardous areas for gasses
The temperature class of the transponder for gas explosion hazardous areas depends on the
ambient temperature range as well as the existing reader power or the field strength at the
antenna within the explosion hazardous area.
Ignitions of gas-air mixtures
The transponder may only be operated in the ambient temperature range specified for it (see
EC type examination certificate TÜV 18 ATEX 232450 X).
When using the transponder, check to ensure 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 transponder can lead
to ignitions of gas-air mixtures.
Ignitions of gas-air mixtures
The maximum transmit power of the transmitter used to operate the transponder must not
exceed 2 W. The magnetic field strength at the reader antenna must not exceed 5 A/m.
Non-compliance with the permissible transmit power can lead to ignitions of gas-air mixtures.
Temperature class grading for gases and radiated power for 2 W und 5 A/m
If the radiated power of an antenna radiating into the hazardous area or located in the hazardous
area and operating in the 13.56 MHz frequency band cannot exceed the value 2 W or 5 A/m, the
temperature class grading is as follows:
Table 8-19
Ambient temperature range
-25 °C ... +220 °C
-25 °C ... +145 °C
-25 °C ... +220 °C
-25 °C ... +95 °C
-25 ℃ ... +30 ℃
324
II 1 G Ex ia IIC T6 ... T2 Ga
0158
II 1 D Ex ia IIIB T100°C / T135°C / T185°C Da
TÜV 18 ATEX 232450 X
WARNING
WARNING
Temperature class grading for gases
Temperature class
T2
T3
T4
T5
T6
System Manual, 02/2021, C79000-G8976-C345-09
SIMATIC RF300