System Manual

Transponder
7.12 SIMATIC RF680T
SIMATIC RF600
System Manual, 06/2019, J31069-D0171-U001-A22-7618
445
NNote
T
Transponder labeling
T
he labeling of the front of the transponder shown above is an example and can vary
b
etween batches produced at different times.
T
his does not affect the hazardous area marking.
T
Temperature class delineation for gases
The temperature class of the transponder for hazardous atmospheres (gases) depends on
the ambient temperature and the radiated power of an antenna in the 865 - 868 MHz
frequency band within the hazardous area.
WARNING
Ignitions of gas
-
-air mixtures
When using the RF680T transponder, check to make sure that the temperature class is
adhered to in keeping 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.
WARNING
Ignitions of gas
-
-air mixtures
The maximum transmitting power of the transmitter used to operate the transponder must
not exceed 2 W. Non-compliance with the permissible transmitting power can lead to
ignitions of gas-air mixtures.
Temperature class assignment for gases and a radiated power less than 100 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 100 mW, the temperature class assignment is as follows:
Ambient temperature range
Temperature class
-25 °C ... +200 °C
T2
-25 °C ... +190 °C
T3
-25 °C ... +125 °C
T4
-25 °C ... +90 °C
T5
-25 °C ... +75 °C
T6