Siemens MAG 5000 User Manual

31
SITRANS F M
3. Project guidance
3.7 Ex survey according
to Directive 94/9/EC
(ATEX)
Applies to instruments used in underground mining
operations, as well as their above ground
operations, which can be endangered by mine gas
and/or flammable dusts.
Instrument groups
Applies to instruments used in the remaining areas
which can be endangered by a potentially explosive
atmosphere.
Instruments of this category are for use in areas
where ignitable atmospheres, caused by a
mixture of air and gasses, vapours or mists, or
by dust/air mixtures, can exist all of the time or
for long periods of time or else frequently.
Instruments of this category are for use in areas
where ignitable atmospheres caused, by a
mixture of air and gasses, vapours or mists, or
by dust/air mixtures, can exist some of the time.
Instruments of this category are for use in areas
where ignitable atmospheres, caused by a
mixture of air and gasses, vapours or mists, or
by dust/air mixtures, are not likely to exist.
However, if they do occur then in all probability,
only seldom or for short periods of time.
Instrument category
(The figures in brackets refer to IEC)
Built according to European norm = E
Explosion protected electrial equipment = Ex
Ex protection labelling in square brackets refers to "Associated electrical equipment"
as an example : II 2G E Ex ia IIB T3-T6
Type of protection
o Oil encapsulated i Intrinsic safety (ia, ib)
p Pressurized apparatus n Non-incentive equipment
q Powder filling m Encapsulation
d Flameproof enclosure s Special protection
e Increased safety
Explosion groups
Gases and vapours Minimum EN/
(examples) ignition IEC
energy [mJ]
• Ammonia - IIA
• Acetone, aircraft fuel, benzine,
crude oil, diesel oil, ethane, ethanoic
acid, ether, gasolines, heating oil,
hexane, methane, propane 0.18 IIA
• Ethylene, isoprene, town gas 0.06 IIB
• Acetylene, carbon disulphide,
hydrogen 0.02 IIC
Ignition temperature
Maximum surface temperature EN / IEC
450°C 842°F T1
300°C 572°F T2
200°C 392°F T3
135°C 275°F T4
100°C 212°F T5
85°C 185°F T6
I
II
EN 50014 Directive 94/9/EC (ATEX)
Definition
1G
(0)
Labelling
w ith gases
Labelling
with dusts
1D
(20)
2G
(1)
2D
(21)
3G
(2)
3D
(22)

Siemens MAG 5000 Specifications

General

Type	Electromagnetic Flowmeter
Protection Class	IP67
Material	Stainless Steel, Carbon Steel
Power Supply	24 V DC, 100-240 V AC
Accuracy	±0.2% of flow rate
Communication	HART, PROFIBUS, Modbus
Enclosure Rating	IP67
Ambient Temperature Range	-20°C to +60°C
Sizes	DN 2 to DN 3000
Lining Materials	PTFE, Hard Rubber
Electrode Materials	Stainless Steel, Hastelloy, Tantalum
Process Temperature	-40 to +180 °C (-40 to +356 °F) depending on liner
Process Pressure	Up to 40 bar (580 psi)
Approvals	ATEX, FM, CSA, IECEx
Flow Velocity Range	0 to 12 m/s
Output Signals	4-20 mA, Pulse, Frequency