KNF LABOPORT SC820G Originalbetriebsanleitung Seite 131

Vacuum system SC820G / SC840G
Equipment
protection
level
Ga
Gb
Gc
Translation of Originial Operating Instruction, KNF 339416-339418 02/23
4.3.6 Equipment protection level for gas
The equipment protection level describes the frequency and
the duration of the occurrence of explosive atmospheres in an
area.
Description*
Devices with very high protection level for
use in potentially explosive atmospheres.
With these devices, there is no risk of igni-
tion during normal operation or in the event
of foreseeable or infrequent faults/malfunc-
tions.
Devices with high protection level for use in
potentially explosive atmospheres in which
there is no risk of ignition during normal op-
eration or in the event of foreseeable or in-
frequent faults/malfunctions.
Device with increased protection level for
use in potentially explosive atmospheres.
There is no risk of ignition during normal op-
eration. The devices have a number of addi-
tional protection measures which ensure
that, in the event of commonly foreseeable
faults in the device, no danger of ignition ex-
ists.
Tab.10: *According to ISO 80079-36
Explosion protection
Constructional
safety
Very high
High
Increased
23
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