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2. Safety
2.5 Special hazards
WARNING!
For hazardous media such as oxygen, acetylene, flammable or
EN
toxic gases or liquids, and refrigeration plants, compressors, etc., in
addition to all standard regulations, the appropriate existing codes or
regulations must also be followed.
For further important safety instructions see chapter 2.7 "Special conditions for
safe use (X conditions)".
WARNING!
Residual media in dismounted instruments can result in a risk to
persons, the environment and equipment.
Take sufficient precautionary measures.
2.6 Labelling / Safety marks
Ex marking
Ex marking per 2014/34/EU
A
B
Designation
A
CE marking
B
Specific marking for explo-
sion protection
C
Symbol of the equipment
group
D
Symbol of the equipment
category
E
Ex atmosphere
8
Ex marking per ISO 80079-36/37
C
D
E
1
II
2
G
Ex
II
2
D
Ex
Marking Meaning
II
2
G
D
WIKA operating instructions pressure gauge model 7 per ATEX
2
3
4
h
IIC
T6 ... T1
h
IIIC
T85°C ... T450°C
European conformity
Ex symbol
Equipment intended for use in other places
than underground parts of mines, and in
those parts of surface installations of such
mines, liable to be endangered by firedamp
and/or combustible dust and an explosive
atmosphere.
High safety, suitable for zone 1 and 21.
For areas in which explosive gas, vapour,
mist or air mixtures are present.
For areas in which explosive atmospheres
caused by dust can form.
5
6
Gb
X
Db
X
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