Explanations Of The Explosion Protection Designation - KNF LABOPORT N820.18 EX Traduction Du Mode D'emploi Original

Use
Designation
II
2/-G
IIB + H2
T3
Gb
Internal atmos-
phere only
Device group I Device group I applies for devices that are used in under-
Device group II Device group II applies for devices that are used in other ar-
10
Chemically-resistant Laboratory pump N820.18 EX / N840.18
Description
Symbol for explosion-proof pumps
Equipment group (see 3.4.1 Device groups [} 10])
Device category (see 3.4.2 Device categories for gas [} 11])
Explosion groups (see 3.4.3 Explosion groups [} 12])
Temperature class (see 3.4.4 Temperature classes [} 13])
Equipment protection level (See Chapter 3.4.6 Equipment
protection level for gas [} 14])
Special operating conditions (See Chapter Special operating
conditions)
Special conditions (see 3.4.7 Special operating conditions
[} 14])
Tab.3: Explosion protection designation
An ignition hazard assessment in accordance with standards
DIN EN ISO 80079-36 and DIN EN ISO 80079-37 was per-
formed for the pumps.
The explosion protection designation can also be found at the
following location:
§
Pump type plate
3.4 Explanations of the explosion protection
designation
3.4.1 Device groups
ground plants of mines as well as their underground systems
that could be endangered by methane and/or combustible
dusts.
eas that could be endangered by an explosive atmosphere.
Translation of Original Operating Instruction, KNF 317428-317425 05/21
EX