Explosion Protection; Using For Transferring Explosive Atmospheres - KNF LABOPORT SH820G Originalbetriebsanleitung

Explosion protection

Designation
II
3/-G
Ex
h
IIB + H2
T3
Gc
Internal atmos-
phere only
16
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 [} 18])
Device category (see 4.3.2 Device categories for gas [} 19])
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 [} 21])
Explosion groups (see 4.3.3 Explosion groups [} 20])
Temperature class (see 4.3.4 Temperature classes [} 21])
Equipment protection level (See Chapter 4.3.6 Equipment pro-
tection level for gas [} 22])
Special operating conditions (See Chapter Special operating
conditions)
Special conditions (see 4.3.7 Special operating conditions
[} 23])
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
Translation of Originial Operating Instruction, KNF 325562-325564 02/23
Vacuum system SH820G / SR820G / SH840G / SR840G