WIKA R5502, Additional Information

Page: 7 / 44

EN
11583747.06 06/2019 EN/DE/FR/ES
WIKA additional information model 55 (ATEX) 7
Ex marking
II 2G c TX X
II 2D c TX X
Marking Designation Meaning
CE marking European conformity
Specific marking
for explosion
protection
Ex symbol
II Symbol of the
equipment group
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.
2 Symbol of the
equipment
category
High safety, approved for zone 1 and 21
G Ex atmosphere Concerning explosive atmospheres caused
by gases, vapours or mists
D Ex atmosphere Concerning explosive atmospheres caused
by dust
Ex Ex marking Standards ISO 80079-36 and ISO 80079-37
applied
TX Maximum surface
temperature
Symbol indicating the temperature class
The actual maximum surface temperature
depends not on the equipment itself, but
mainly on the operating conditions.
X Specific
conditions of use
see operating
instructions
Ambient temperature with special range
Specific conditions of use apply.
1. Safety