KNF LABORPORT Originalbetriebsanleitung Seite 68

Chemically-resistant Laboratory pump N820.18 EX
Maximum
surface
temperature
Ignition
temperature
Temperature
class
Temperature class
T1
T2
T3
T4
T5
T6
Designation
H
H
H
Translation of Original Operating Instruction, English, KNF
317428-317425 09/20
3.4.4 Temperature classes
exportiert]
The maximum surface temperature is the highest temperature
that is reached under the most unfavorable conditions of a
surface of the pump.
The maximum surface temperature of the pump must always
be lower than the lowest ignition temperature of the gas or va-
por/air mixture in which it is used.
The maximum surface temperature arises from the design of
the pump and is specified as temperature class.
Max. surface tempera-
ture [°C]
Tab.6:
3.4.5 Ignition protection type
Description
Constructional safety "c"
Ignition source monitoring "b"
Liquid immersion "k"
Tab.7:
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 protective goals were reached by
applying ignition protection type constructional safety "c".
[Für die Übersetzung
Ignition temperature
[°C]
450
300
200
135
100
85
Use
> 450
> 300
> 200
> 135
> 100
> 85
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