Use in explosion-prone zones
43 0000000141 - 002 - EN
10 Use in explosion-prone zones
10.1 General information
Gas boosters bearing an ATEX label and delivered with a declaration of conformi-
ty with 2014/34/EU are suitable for use in potentially explosive atmospheres.
They conform with equipment group II, equipment category 2G, explosion group
IIB or IIC, structural safety. The designation is indicated on the rating plate and on
the general drawing.
The individual parts of the label are explained below.
Fig. 10-1 Exemplary figure - ATEX label
1 CE symbol
2 Ex-symbol
3 Equipment group II: The gas booster may be used in potentially explosive at-
mospheres, except in mining.
4 Equipment category 2G: The device ensures a high level of protection and
may be used in Zone 1 and Zone 2.
5 Ex h marking: Designated for use as per DIN EN ISO 80079-36/37.
6 Designation of ambient temperature: Permissible range of ambient tem-
perature.
7 Equipment group: Designated for use in potentially explosive gas atmo-
spheres, with gases from Group IIB or IIC.
8 Range of temperature class: Under compliance with the indications in the
operating manual, device can be used in the temperature classes indicated.
9 EPL: Equipment in Group II for explosive zones generate vapours or mist due
to mixing of air and gases; can be used in Zone 1 or 2; sufficient protection
for normal operation and in case of foreseeable errors.
10.2 Temperature class
The temperature of the gas booster mainly depends on the temperature of the
operating fluid.
The following table indicates the relationship of the operating fluid temperature
and the temperature class of the gas booster:
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