Simatic Rf600 - Siemens SIMATIC RF600 System Manual

Ambient 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 ≤ Ta ≤ +43 ℃
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 ≤ Ta ≤ T
See diagram, orange line
1)
See diagram, blue line
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
°C
1)
max. ambient
WARNING
7.12 SIMATIC RF680T
Temperature value
T135 °C
Temperature value
135°C
2)
Transponder
449