10 Safety
CFPP Process Analyzer CFPP-4.2 03/2016
2.4 Explosion Protection
2.4.1 Labeling on the Analyzer
The analyzer is designed for operation in explosion hazard areas. It is labeled as follows:
II 2 G IIC T4 Gb
The labeling gives you the following information:
Labeling Meaning
II Equipment group: The analyzer may be used in places likely to
become endangered by explosive atmospheres, except
underground (mining).
2 G Equipment category: The figure 2 means that an explosive
atmosphere may occur occasionally. The analyzer ensures a high
level of protection and may be used in zones 1 and 2.
The letter G means that the flammable substances which cause the
explosive atmosphere may be gas, mist or vapor (but not dust).
IIC Gases and vapors which form an explosive atmosphere are
classified by their explosion characteristics in the subgroups IIA, IIB
or IIC. In this case, gases and vapors of the subgroups IIC are
permitted.
T4 Gases and vapors which form an explosive atmosphere are
classified by their ignition temperature in the temperature classes
T1 to T6. In this case, gases and vapors in the temperature classes
T1 to T4 (ignition temperature >135°C according to IEC 60079-4)
are permitted. These are for example gasoline, diesel fuel,
hydrogen sulfide and hydrogen.
The maximum surface temperature of the analyzer is <135°C.
Gb Gb: The device ensures a high degree of safety. It can be used in
zone 1 and in zone 2. A potentially explosive atmosphere may
occasionally occur.
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