WIKA TG53 Instructions Complémentaires page 7

1. Safety
Ex marking
II 2G Ex h IIC T6 ... T1 Gb X
II 2D Ex h IIIC T85 °C ... T450 °C Db X
Marking Designation
CE marking
Specific marking for
explosion protection
II Symbol of the
equipment group
2 Symbol of the
equipment category
G Ex atmosphere
Ex atmosphere
D
Ex Ex marking
h Ignition protection type Non-electrical equipment for explosive
Suitable atmosphere
IIC
IIIC Suitable atmosphere
T6 ... T1 Maximum surface
temperature
T85 °C ... Maximum surface
T450 °C temperature
WIKA additional information models TG53, TG54 (ATEX)
Meaning
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, approved for zone 1 and 21
Concerning explosive atmospheres caused
by gases, vapours or mists
Concerning explosive atmospheres caused
by dust
Standards ISO 80079-36 and ISO 80079-37
applied
atmospheres
An ignition protection type is not applied to
the letter "h".
Gas atmosphere group IIC
Combustible flyings, non-conductive dust
and conductive dust
Symbol indicating the temperature class
The actual maximum surface temperature
depends not on the equipment itself, but
mainly on the operating conditions.
Maximum surface temperature
The actual maximum surface temperature
depends not on the equipment itself, but
mainly on the operating conditions.
EN
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