KNF LABOPORT SC820G Manual De Instrucciones página 125

Vacuum system SC820G / SC840G
Designation
II
3/-G
Ex
h
IIB + H2
T3
Gc
Internal atmos-
phere only
Translation of Originial Operating Instruction, KNF 339416-339418 02/23
4 Explosion protection
4.1 Using for transferring explosive
atmospheres
Always use vacuum systems of the corresponding device cat-
egory and temperature class to pump explosive atmospheres.
These vacuum systems have the following EU explosion pro-
tection designations:
Description
Symbol for explosion-protected devices
Device group (see 4.3.1 Device groups [} 19])
Device category (see 4.3.2 Device categories for gas [} 20])
Symbol indicates that the device satisfies one or more ignition
protection types.
Symbol for ignition protection type (see 4.3.5 Ignition protec-
tion type [} 22])
Explosion groups (see 4.3.3 Explosion groups [} 21])
Temperature class (see 4.3.4 Temperature classes [} 22])
Equipment protection level (See Chapter 4.3.6 Equipment pro-
tection level for gas [} 23])
Special operating conditions (See Chapter Special operating
conditions)
Special conditions (see 4.3.7 Special operating conditions
[} 24])
Tab.5: Explosion protection designation
An ignition hazard evaluation according to the standards DIN
EN ISO 80079-36 and DIN EN ISO 80079-37 was carried out
for the vacuum systems.
The explosion protection designation can also be found at the
following location:
§
Vacuum system type plate
Explosion protection
17
DE
EN
FR
ES
IT