ProMinent Sigma 3 Basic Operating Instructions Manual page 25

Tab. 2: Example of the division of gases into explosion groups and temperature classes
IIC
IIB
IIA
T4
-
Ethyl ether
Acetaldehyde Benzine,
Diesel fuel,
Aircraft fuel,
Heating oils,
n-hexane
WARNING!
Example: Where may I use the ATEX pump Sigma
S3Ba?
The pump label corresponds to "Unit group" II: the pump
may only be used in overground production systems,
which are not at risk from firedamp.
The pump label states e.g. "Explosion group" IIB and
"Temperature class" T4:
Ä Tab. 2 'Example of the division of gases into explo‐
sion groups and temperature classes' on page 25
shows the following example: the pump can be used for
ethyl ether or a comparable substance - the "Explosion
group" and "Temperature class" are stated in the mate‐
rial safety data sheets for the substances. The pump in
the example could also be suitable for substances that
require only "Explosion group" IIA and / or "Temperature
class" T3, T2 or T1.
The pump label is e.g. "EPL" Gc: the potentially explo‐
sive atmosphere may only occur in normal operation.
T3 T2
- Ethyne
- Ethene
Ethanol,
n-butane,
n-butyl alcohol
WARNING!
Example 2
The pump label corresponds to "Unit group" II: the pump
may only be used in overground production systems,
which are not at risk from firedamp.
The pump label states e.g. "Explosion group" IIC and
"Temperature class" T4:
Ä Tab. 2 'Example of the division of gases into explo‐
sion groups and temperature classes' on page 25 shows
the following: the pump can be used for all gases in the
table or comparable substances but not for "Tempera‐
ture classes" T5 and T6 - refer to the corresponding
material safety data sheets.
The pump label is e.g. "EPL" Gb: the potentially explo‐
sive atmosphere may only occur in normal operation and
with expected faults. The pump in the example would
also be suitable for "EPL" Gc: the potentially explosive
atmosphere may only occur in normal operation.
Safety chapter
T1
Hydrogen
Mains gas (coal gas)
Acetone,
Ammonia,
Benzene (pure),
Acetic acid,
Ethane,
Ethyl acetate,
Carbon oxide,
Methanol,
Propane,
Toluene
25