Endress+Hauser PROline prosonic flow 93 II2 GD Mode D'emploi page 39

XA065D/06/a3/12.03
50102482
FM+SGML 6.0
PROline prosonic flow 93
II2(1)GD
Ex documentation
for the BA 078D and BA 079D operating instructions
according to Directive 94/9/EC (ATEX)
Instrument groups Instrument groups
applies to instruments used in underground mining operations, as well as applies to instruments used in underground mining operations, as well as
I I their above ground operations, which can be endangered by mine gas their above ground operations, which can be endangered by mine gas
and/or flammable dusts. and/or flammable dusts.
applies to instruments used in the remaining areas which can be applies to instruments used in the remaining areas which can be
II II
endangered by a potentially explosive atmosphere. endangered by a potentially explosive atmosphere.
Instrument category Instrument category
Instruments of this category are for use in areas where ignitable Instruments of this category are for use in areas where ignitable
1G 1G 1D 1D
atmospheres caused by a mixture of air and gases, vapours or mists atmospheres caused by a mixture of air and gases, vapours or mists
or by dust/air mixtures, can exist all of the time or for long periods of or by dust/air mixtures, can exist all of the time or for long periods of
(0) (0) (20) (20)
time or else frequently. time or else frequently.
Instruments of this category are for use in areas where ignitable Instruments of this category are for use in areas where ignitable
2G 2D 2G 2D
atmospheres caused by a mixture of air and gases, vapours or mists atmospheres caused by a mixture of air and gases, vapours or mists
(1) (1) (21) (21)
or by dust/air mixtures, can exist some of the time. or by dust/air mixtures, can exist some of the time.
Instruments of this category are for use in areas where ignitable Instruments of this category are for use in areas where ignitable
3G 3G 3D 3D atmospheres caused by a mixture of air and gases, vapours or mists atmospheres caused by a mixture of air and gases, vapours or mists
or by dust/air mixtures, are not likely to exist. However, if they do or by dust/air mixtures, are not likely to exist. However, if they do
(2) (2) (22) (22)
occur then in all probability, only seldom or for short periods of time. occur then in all probability, only seldom or for short periods of time.
(The figures in brackets refer to IEC) (The figures in brackets refer to IEC)
Built according to European norm = E Built according to European norm = E
Explosion protected electrical equipment = Ex Explosion protected electrical equipment = Ex
Ex protection labelling in square brackets refers to "Associated electrical equipment" Ex protection labelling in square brackets refers to "Associated electrical equipment"
Type of protection Type of protection
o o Oil encapsulated Oil encapsulated
p p Pressurized apparatus Pressurized apparatus
q q Powder filling Powder filling
d d
Flameproof enclosure Flameproof enclosure
e e Increased safety Increased safety
Explosion groups Explosion groups
Gases and vapours Gases and vapours
(examples) (examples)
- Ammonia - Ammonia
- Acetone, aircraft fuel, benzene, crude oil, - Acetone, aircraft fuel, benzene, crude oil,
diesel oil, ethane, ethanoic acid, ether, gaso- diesel oil, ethane, ethanoic acid, ether, gaso-
lines, heating oil, hexane, methane, propane lines, heating oil, hexane, methane, propane
- Ethylene, isoprene, town gas - Ethylene, isoprene, town gas
- Acetylene, carbon disulphide, hydrogen - Acetylene, carbon disulphide, hydrogen
Temperature class Temperature class
Maximum surface temperature Maximum surface temperature
450 °C 450 °C
300 °C 300 °C
200 °C 200 °C
135 °C 135 °C
100 °C 100 °C
85 °C 85 °C
as an example: 0 as an example: 0
Definition Definition
i i Intrinsic safety (ia, ib) Intrinsic safety (ia, ib)
n n Non-incendive equipment Non-incendive equipment
m m Encapsulation Encapsulation
s s Special protection Special protection
Minimum Minimum
EN EN
ignition ignition
IEC IEC
energy [mJ] energy [mJ]
-- -- IIA IIA
0,18 0,18
IIA IIA
0,06 0,06 IIB IIB
0,02 0,02
IIC IIC
EN / IEC EN / IEC
842 °F 842 °F T1 T1
572 °F 572 °F T2 T2
392 °F 392 °F T3 T3
275 °F 275 °F T4 T4
212 °F 212 °F T5 T5
185 °F 185 °F T6 T6
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II 2G E Ex ia IIC T6 II 2G E Ex ia IIC T6