Use Of The Transponder In Hazardous Areas For Gases - Siemens SIMATIC RF600 System Manual

Transponder/tags
7.6 SIMATIC RF640T Gen 2
7.6.3.7

Use of the transponder in hazardous areas for gases

Temperature class delineation for gases
The temperature class of the transponder for hazardous areas depends on the ambient
temperature range:
Ambient temperature range
-25 °C to +85 °C
-25 °C to +60 °C
-25 °C to +40 °C
-25 °C to +30 °C
Ignitions of gas-air mixtures
When using the RF640T transponder, check to ensure that the temperature class is
observed in respect of 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 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.
248
WARNING
WARNING
Temperature class
T3
T4
T5
T6
System Manual, 10/2009, J31069-D0171-U001-A8-7618
SIMATIC RF600