EN
WIKA operating instructions pressure gauge, model 2 per ATEX 15
14375375.01 12/2019 EN/DE
ID Marking Designation Meaning
2 h Ignition protection type Non-electrical equipment for use in explo-
sive atmospheres
An ignition protection type is not applied to
the letter “h”.
3 IIC Suitable atmosphere Gas atmosphere group IIC
IIIC Combustible yings, non-conductive dust
and conductive dust
4 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.
5 Gb EPL equipment protec-
tion level
Potential ignition sources that are eective
or may become eective during normal
operation and expected malfunction.
Db
6 X Specic conditions
of use, see operating
instructions
Ambient temperature with special range.
Specic conditions of use apply.
2. Safety
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