KNF LABOPORT N820.3FT.29.18G, Manual

Page: 67 / 333

Use
Chemically-resistant Laboratory pump N820.18
EX
12
Translation of Original Operating Instruction, English, KNF
317428-317425 09/20
3.4.3 Explosion groups
Combustible gases and vapors are classified according to ex-
plosion groups(I, IIA, IIB and IIC) and temperature classes.
The following table shows the classification of the most com-
mon combustible gases and vapors.
T1 T2 T3 T4 T5 T6
I Methane – – – – –
IIA Acetone
Ethane
Ethyl acetate
Ammonia
Ethyl chloride
Benzene
Acetic acid
Carbon
monoxide
Methane
Methanol
Methyl chlo-
ride
Naphthalene
Phenol
Propane
Toluene
i-amyl acetate
n-butane
n-butyl alco-
hol
Cyclohex-
anone
1,2-
dichloroethan
e
Acetic anhy-
dride Gasoline
Diesel fuel
Jet fuel
Heating oils
n-hexane Acetaldehyde – –
IIB Town gas Ethylene
Ethyl alcohol Hydrogen sul-
fide Ethyl ether – –
IIC Hydrogen Acetylene – – – Carbon
disulfide
Tab.5:
The classification of gases and vapors into groups with re-
spect to explosion group and temperature class applies for
the transferred medium.
Transferred
medium
The pump may only be used to transfer gases and vapors
that belong to the respective explosion group and correspond-
ing temperature class (or below) (see designation on the type
plate) or that are not explosive and combustible.
Environment of
the pump
The pump must not be set up in potentially explosive areas. It
is only suitable for transferring explosive atmospheres.