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

Transponder
7.6 SIMATIC RF610T ATEX
7.6.3.1

Use of the transponder in hazardous areas for gases

Temperature class grading for gases with up to 2000 mW ERP
The temperature class of the transponder for hazardous areas depends on the ambient
temperature range.
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 grading is as follows:
Table 7- 16
Ambient temperature range
-25 °C to +85 °C
-25 °C to +65 °C
-25 °C to +50 °C
Ignitions of gas-air mixtures
When using the RF610T 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.
Ignitions of gas-air mixtures
The maximum radiated power of the transmitter used to operate the transponder must not
exceed 2000 mW ERP.
Non-compliance with the permitted radiated power can lead to ignitions of gas-air mixtures.
394
Temperature class grading for gases
WARNING
WARNING
Temperature class
T4
T5
T6
System Manual, 06/2019, J31069-D0171-U001-A22-7618
SIMATIC RF600