WARNING!
Example of EX-designation: Where may I use the
ATEX version of the Makro TZ?
The pump designation is:
" ... II 3G Ex h IIB T4 Gc".
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 inserted pump label "3G Ex h" does not need
to be discussed here.
The additional pump label in the example states
“Explosion group” IIB and “Temperature class” T4:
The
Tab. 1 ‘Example of the division of gases
into explosion groups and temperature classes’
on page 25 is shown as an example: the pump
can be used for ethyl ether or a comparable gas -
refer to the material safety data sheet for the gas
or your explosion protection document.
The pump in the example could also be suitable for
gases that require only “Explosion group” IIA and
“Temperature class” T3, T2 or T1 - but not for T5
and T6.
"EPL" Gc is shown in the next example: Use only
in zone 2 – but not in zone 1 or zone 0.
Tab. 1: Example of the division of gases into explosion groups and temperature classes
T6
85 °C
T5
100 °C
T4
135 °C
T3
200 °C
T2
300 °C
T1
450 °C
IIC Carbon disulphide
-
Trichlorosilane
-
Ethyne
Hydrogen
IIB
-
-
Ethyl ether
-
Ethene
Mains gas (coal gas)
IIA
-
-
Acetaldehyde
Benzine,
Diesel fuel,
Aircraft fuel,
Heating oils,
n-hexane
Ethanol,
n-butane,
n-butyl alcohol
Acetone,
Ammonia,
Benzene (pure),
Acetic acid,
Ethane,
Ethyl acetate,
Carbon oxide,
Methanol,
Propane,
Toluene
Safety chapter
25
