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Gas Data GFM 436 - Page 64

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64
Different gases will be ignited at different temperatures. Some examples are given below.
Gas
MINIMUM Required T class
Acetylene
T2
Hydrogen
T1
Ethylene
T2
Carbon monoxide
T1
Hydrogen sulphide
T3
Ammonia
T1
Propane
T1
Methane
T1
_________________________________________________________________________________________
The GFM400 Series is designed to meet the requirements of class T1.
The GFM400 Series has been submitted for European Type Assessment. This assessment examines the design
and construction criteria set out above and controls the manufacture. This process is defined in Annex II of
the European ATEX Directive 94/9/EC. This allows the instrument to carry the ‘Ex’ logo followed by a
summary of the level of protection that is incorporated into the instrument.