KNF LABOPORT SH820G Originalbetriebsanleitung Seite 105

Vacuum system SH820G / SR820G / SH840G / SR840G
Surroundings of
the device
Maximum sur-
face temperature
Ignition tempera-
ture
Temperature
class
Temperature
class
T1
T2
T3
T4
T5
T6
Designation
h
h
h
Translation of Originial Operating Instruction, KNF 325562-325564 02/23
The device must not be set up in potentially explosive atmos-
pheres. It is only suitable for the transfer of explosive atmos-
phere corresponding to its designation (see type plate).
4.3.4 Temperature classes
The maximum surface temperature is the highest temperature
reached by a surface of the device under the most unfavor-
able conditions.
The maximum surface temperature of the device must always
be lower than the lowest ignition temperature of the gas/air or
vapor/air mixture in which it is used.
The maximum surface temperature is derived from the con-
struction of the device and is stated as the temperature class.
Max. surface temperature [°C] Ignition temperature
450
300
200
135
100
85
Tab.8:
4.3.5 Ignition protection type
Description
Constructional safety "c"
Ignition source monitoring "b"
Liquid immersion "k"
Tab.9:
An ignition hazard evaluation according to the standards DIN
EN ISO 80079-36 and DIN EN ISO 80079-37 was carried out
for the devices. The protective goals were reached by apply-
ing the ignition protection type of constructional safety "c".
Explosion protection
[°C]
> 450
> 300
> 200
> 135
> 100
> 85
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EN
FR
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