SystemAir 33986, Инструкция по установке и эксплуатации

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8 Marking
Table 4 Marking
Designation
Marking
Device group II Classifi-
cation All areas with explosion-capable atmosphere
apart from mining, underground and above
ground in cases of mien damp.
Device
category/
classification „2G“
2
Category 2 / Zone 1 / high safety / Devices of
this category are intended for use in areas in
which occasional occurrence of an explosion-
capable atmosphere of gases, vapours, mists is
to be expected. Increased safety, Ex e.
„3G“ 3 Category 3 / Zone 2 / normal safety / Devices of
this category are intended for use in areas in
which occurrence of an explosion-capable
atmosphere of gases, vapours, mists is not to be
expected, but if it does occur then in all
probability only rarely and for a short period of
time.
G
Gases / Vapours / Mists
Ignition
protection class
mechanical “h” Constructive
safety DIN EN ISO 80079-37:2016
Ignition
protection class
electrical
„d“
Pressure-
proof
encapsula-
tion d
Motor: Pressure-proof encapsulation
„e“ Increased
safety, Ex e Terminal box: Occurrence of sparks, light arc or
inadmissible temperatures which could act as
sources of ignition is prevented by additional
measures and an increased degree of safety.
Group
II
IIA Propane
IIB
Ethylene
IIC Hydrogen
Temperature
class
T1 450 °C
I: Methane
IIA: Acetone, ammoniac, methane, methanol,
propane, toluene
IIB: Town gas
IIC: Hydrogen
T2 300 °C
IIA: Ethyl alcohol, n-butane
IIB: Ethylene
IIC: Acetylene
T3 200 °C
IIA: Otto fuels, diesel fuels, heating oils
IIB: Hydrogen sulphide
T4 135 °C
IIA: Acetaldehyde, ethyl ether
T5 100 °C
There is no gas in this class
T6 85 °C
Carbon disulphide
EPL Equipment
Protection
Level
Gb
Devices of this category are intended for use in
areas in which occasional occurrence of an
explosion-capable atmosphere of gases, vapours,
mists is to be expected.
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