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2. Safety
Skilled personnel
Skilled personnel are understood to be personnel who, based on their techni-
cal training, knowledge of measurement and control technology and on their
experience and knowledge of country-specific regulations, current standards
EN
and directives, are capable of carrying out the work described and independently
recognising potential hazards.
2.5 Special hazards
WARNING!
For hazardous media such as oxygen, acetylene, flammable or
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
explosion protection
C
Symbol of the equipment
group
D
Symbol of the equipment
category
8
Ex marking per ISO 80079-36/37
C
D
E
1
II
2
G
Ex
II
2
D
Ex
Marking Meaning
II
2
WIKA operating instructions pressure gauge model 4 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 atmosphe-
re.
High safety, suitable for zone 1 and 21.
5
6
Gb
X
Db
X
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