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A A mbient temperature range for dust and radiated power of 2000 mW ERP
If the radiated power of an antenna radiating into the hazardous area or located in the
hazardous area and operating in the 865 - 868 MHz frequency band cannot exceed the
value 2000 mW, the temperature class assignment is as follows:
Ambient temperature range
-25 °C
Temperature class assignment for dusts and a radiated power of 10 mW ERP to 2000 mW ERP
If the radiated power of an antenna radiating into the hazardous area or located in the
hazardous area and operating in the 865 - 868 MHz frequency band can be between the
values 10 mW ERP and 2000 mW ERP, the temperature class assignment is as follows:
Ambient temperature range
-25 °C
1)
2)
Ignitions of dust- - air mixtures
Using the RF680T transponder with radiant power greater than 1280 mW ERP, requires
compliance with the reduced maximum ambient temperature (see diagram) for maintaining
the temperature value to a maximum of 135 °C. Non-compliance with the permitted
temperature ranges while using the transponder can lead to ignitions of dust-air mixtures.
SIMATIC RF600
System Manual, 06/2019, J31069-D0171-U001-A22-7618
Ta
+43
Ta
T
°C
max. ambient
See diagram, orange line
See diagram, blue line
WARNING
Temperature value
T135 °C
Temperature value
1)
135°C
7.12 SIMATIC RF680T
2)
Transponder
449
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