Use Of The Readers In Hazardous Areas For Gases; Use Of The Readers In Hazardous Areas For Dusts - Siemens SIMATIC Ident System Manual

Readers
5.4 SIMATIC RF340R/RF350R
5.4.3.1

Use of the readers in hazardous areas for gases

Temperature class delineation for gases
The temperature class of the reader for hazardous areas depends on the ambient
temperature range:
Ambient temperature range
-25 °C to +70 °C
Ignitions of gas-air mixtures
When using the RF340R/RF350R readers, 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 reader can lead to
ignitions of gas-air mixtures.
5.4.3.2

Use of the readers in hazardous areas for dusts

The equipment is suitable for dusts whose ignition temperatures for a dust layer of 5 mm are
higher than 80 °C (smoldering temperature). With the ignition temperature according to type
of protection iD specified here in compliance with IEC 61241-0 and IEC 61241-11, the
smoldering temperature of the dust layer is referenced in this case.
Temperature class delineation for dusts
Ambient temperature range
-25 °C < Ta < +70 °C
Ignitions of dust-air mixtures
When using the RF340R/RF350R readers, check to ensure that the temperature values are
observed in respect of the requirements of the area of application.
Non-compliance with the permitted temperature ranges while using the reader can lead to
ignitions of dust-air mixtures.
150
WARNING
WARNING
Temperature class
T5
Temperature value
T80 °C
System Manual, 07/2016, C79000-G8976-C345-0x
SIMATIC RF300