KROHNE IFM4080KEEx User Manual
04/02
Addition to the
Magnetic-inductive
flowmeters
ALTOFLUX
IFM 4080 K-EEx
IFM 4080 K/i-EEx
Compact flowmeter
installation and
operating
instructions
7.30917.31.00
WARNING !
No changes may be made to the devices. Unauthorized changes
might affect the explosion safety of the devices.
These additional instructions are an extension to the Installation and Operating
Instructions and only applies for the EEx version of the IFM 4080 K or IFM 4080 K / i EEx magnetic-inductive compact flowmeter. All technical information described in the
Installation and Operating Instructions are applicable, when not specifically excluded
or replaced by the instructions in these additional instructions.
CONTENTS
1 SYSTEM COMPONENTS...............................................................................................................2
1.1 General information...................................................................................................................2
1.2 Primary head...............................................................................................................................3
1.3 IFC 090/…-EEx signal converter.............................................................................................3
1.3.1 Electronics compartment ........................................................................................................3
1.3.2 Terminal compartment...........................................................................................................3
1.4 Electronics unit ........................................................................................................................... 4
1.4.1 Regular IFC090-EEx electronics unit .....................................................................................4
1.4.2 IFC 090i-EEx unit with MODIS modules ................................................................................4
2 ELECTRICAL CONNECTION........................................................................................................5
2.1 Equipotential bonding system ..................................................................................................5
2.2 Regular IFC 090-EEx electronics unit....................................................................................5
2.3 MODIS version IFC 090i-EEx electronics unit......................................................................6
2.3.1 Connection diagrams MODIS ................................................................................................8
3 OPERATION OF THE SIGNAL CONVERTER.........................................................................14
4 SERVICE..........................................................................................................................................14
4.1 Replacement of electronics unit or power fuse(s) ..............................................................15
4.1.1 Replacement of electronics unit............................................................................................16
4.1.2 Replacement of power fuse(s)...............................................................................................17
4.1.3 Changing power supply voltage............................................................................................20
5 CONNECTING CABLES...............................................................................................................21
6 MAINTENANCE..............................................................................................................................21
7 CONNECTION DIAGRAM .............................................................................................................22
8 ORDERING INFORMATION.........................................................................................................23
8.1 Regular IFC 090-EEx electronics unit..................................................................................23
8.2 MODIS version IFC 090i-EEx electronics unit....................................................................23
9 DATA PLATES................................................................................................................................24
10DECLARATION OF CONFORMITY............................................................................................25
11EC-TYPE EXAMINATION CERTIFICATE.................................................................................26
Be sure to follow these instructions !
IMPORTANT !
• The prescriptions and regulations as well as the electrical data described in the
EC-type examination certificate must be obeyed.
• Beside the instructions for electrical installations in non-hazardous locations according
to the applicable national standard (equivalent of IEC 364, e.g. VDE 0100), especially
the regulations in EN 60079-14 "Electrical installations in hazardous locations" or
equivalent national standard (e.g. DIN VDE 0165) must be followed.
• Installation, establishment, utilization and maintenance are only allowed to be
executed by personnel with an education in explosion safety !
1
1 SYSTEM COMPONENTS
1.1 General information
The Altoflux IFM 4080 K/…-EEx magnetic-inductive compact flowmeter is in accordance with
the European Directive 94/9 EC (ATEX 100a) and approved for hazardous classified
locations of Zone 1 and 2 by the KEMA conform to the European Standards of the EN 500xx
series. The IFM 4080 K/…-EEx has the following approval number.
KEMA 01 ATEX 2200 X
The compact flowmeter is available in two types, namely:
• IFM 4080 K-EEx regular explosion protected version;
• IFM 4080 K/i-EEx, MODIS version. This type has intrinsically safe signal output circuits,
which are provided by two on the IFC 090i-EEx electronics unit installed MODIS modules.
The regular IFM 4080 K-EEx compact flowmeter is designed for ambient temperatures in the
range of -20°C (special -40°C) up to +60°C, the MODIS version type IFM 4080 K/i-EEx is
rated for ambient temperatures from -20°C up to +60°C.
The allowed process liquid temperature is a.o. limited by the combustible atmosphere that
(possibly) surrounds the apparatus, which again is determined by the temperature class of
the atmosphere (first column of the tables). See table 1 and 2 below for details.
For dusts the second column of the two below listed tables is applicable.
Max. surface
class
(for gases)
T6 T85°C 75°C 70°C 70°C
T5 T100°C 95°C 90°C 75°C
T4 T135°C 130°C 115°C 75°C
T3 T180°C 150°C 115°C 75°C
class
(for gases)
T6 T85°C 70°C 70°C 70°C
T5 T100°C 85°C 85°C 85°C
T4 T135°C 120°C 120°C 115°C
T3 T180°C 180°C 180°C 115°C
Use heat-resistant cables above - - 50°C
Table 2: Temperature classification DN25…150 with PFA liner.
The IFM 4080 K/…-EEx flowmeter consists of the IFC 090/…-EEx signal converter unit,
which is screwed on top of the primary head (i.e. measuring unit). The compact flowmeter is
marked with one of the codes below, depending on the meter size:
temperature
(for dusts)
Table 1: Temperature classification DN200 and larger.
Max. surface
temperature
(for dusts)
Maximum process liquid temperatureTemperature
Ta ≤ 40°C Ta ≤ 50°C Ta ≤ 60°C
Maximum process liquid temperatureTemperature
Ta ≤ 40°C Ta ≤ 50°C Ta ≤ 60°C
• DN25-150: II 2GD EEx d [ib] IIC T6…T3 (EEx d terminal compartment) or
II 2GD EEx de [ib] IIC T6 …T3 (EEx e terminal compartment).
• DN200 and up: II 2GD EEx de [ib] IIC T6…T3 (both EEx d and EEx e
terminal compartment).
2
In case of the MODIS version IFM 4080 K/i-EEx , the electronics unit of type IFC 090i-EEx is
provided with protective modules, which provide intrinsically safe output signals of category
"ia". The flowmeter is then marked with one of the following codes:
• DN25-150: II 2GD EEx d [ia] [ib] IIC T6…T3 (EEx d terminal compartment) or
II 2GD EEx de [ia] [ib] IIC T6…T3 (EEx e terminal compartment).
• DN200 and up: II 2GD EEx de [ia] [ib] IIC T6…T3. (both EEx d and EEx e
terminal compartment)
For details see the EC-type examination certificate in Section 11 of these instructions.
1.2 Primary head
The primary head is the measuring unit of the IFM 4080 K/…-EEx compact flowmeter and
contains two field coils (see table 3 for type of protection) and two electrodes in type of
protection intrinsic safety category "ib" according to EN 50020.
Meter size Type of protection
DN25 up to DN150
DN200 and larger
Housing: Flameproof enclosure "d" according to EN 50018
Electrodes: Intrinsic safety "ib" according to EN 50020
Field coils: Increased safety "e" according to EN 50019
Electrodes: Intrinsic safety "ib" according to EN 50020
Table 3: Types of protection of primary head.
NOTE:
The intrinsically safe electrode circuits of the IFM 4080K/…-EEx compact flowmeter are
only internal circuits and not accessible for the customer.
1.3 IFC 090/…-EEx signal converter
The IFC 090/…-EEx signal converter consists of a cylindrical housing of die-casted
aluminum, which has two separate compartments, divided from each other by an integrated
wall with casted flameproof terminal feed-through. The neck at the bottom of the housing
contains a flameproof cable feed-through. The signal converter housing is on both ends
closed by a cylindrical threaded cover with O-ring sealing. The housing has an ingress
protection degree of at least IP67 conform to EN 60529.
1.3.1 Electronics compartment
The electronics compartment accommodates the pre-certified IFC 090…-EEx electronics unit
with approval number PTB 98 ATEX 2012 U. The compartment is designed with type of
protection flameproof enclosure "d" according to EN 50018. It is closed by a flameproof
display cover with glass window.
1.3.2 Terminal compartment
The terminal compartment has seven terminals for connection of the power supply and signal
output circuits. Chapter 2 and 7 show the terminal arrangement for the regular and MODIS
version of the IFC 090/…-EEx signal converter. The terminal arrangement of the MODIS
version (i.e. IFC 090i-EEx) is shown in figure 4 on page 6. Two of the terminals are used for
connection of the non-intrinsically safe power supply and four terminals (marked with "*")
for the intrinsically safe, category "ia" signal outputs of the MODIS modules. The nonintrinsically and intrinsically safe terminals are separated from each other by a metal dividing
plate, which is screwed to the remaining (not connected) M4 terminal. The two non-
intrinsically safe power supply terminals are covered by an insulating plate.
3
The terminal compartment (with standard type of protection increased safety "e") is standard
equipped with two ATEX approved "EEx e" cable glands. The terminal compartment can also
be provided as a flameproof enclosure "d", in which case ATEX approved "EEx d" cable
glands of size Pg13.5, Pg16 or M20x1.5 are either factory installed or must be installed by
the customer. For flameproof conduit systems, the terminal compartment must have type of
protection flameproof enclosure "d" according to EN 50018. The conduits must be sealed by
"EEx d" approved (within the ATEX 100a directive) sealing devices (i.e. stopping box) directly
at the conduit entrances of the as flameproof enclosure performed terminal compartment.
1.4 Electronics unit
The IFM 4080 K/…-EEx magnetic-inductive compact flowmeter can be equipped with the
regular IFC 090-EEx or with the IFC 090i-EEx electronics unit with intrinsically safe signal
outputs (i.e. MODIS version). The next subsections give a detailed description of these units.
1.4.1 Regular IFC090-EEx electronics unit
The IFC 090-EEx is used in the regular IFM 4080 K-EEx and can be equipped with one of
the following power supplies (depends on the area of application).
Power
Terminal Function Electrical data
supply
L
AC-versions
AC/DC-version
The IFC 090-EEx electronics unit is equipped with the following in-/output circuits. Terminals
B1, B⊥ and B2 can be configured as status or pulse outputs or as control inputs via the
software. See the table below for the electrical data of these in-/output circuits.
Terminals Description Nominal voltage Maximum current
I+, I
B1, B⊥ , B2
Pulse, status, control in-/outputs 32 V 150 mA
N
PE
1L½
0L½
FE
Table 4: Electrical data of power supply.
Current output 15 V 22 mA
Table 5: Electrical data of in-/output circuits.
1.4.2 IFC 090i-EEx unit with MODIS modules
The IFC 090i-EEx electronics unit is equipped with a pair of MODIS-modules (see page 8). It
is equipped with one of the following power supplies.
Live
Neutral
Protective Earth
Live
Neutral
Functional Earth
Un = 100/115/200/230 Vac -15/+10%
Pn = approx. 10 VA, Um = 253 V
Un = 24 V ac/dc
AC: -15/+10%, Pn=10 VA
DC: -25/+30%, Pn=8 W
Um = 253 V
Power supply Terminals Function Electrical data
L
AC-version
AC/DC-version
NOTE: The mains fuses for both electronics units are listed in Section 8 of this manual.
N
PE
1L½
0L½
FE
Table 6: Electrical data of IFC 090i-EEx electronics unit.
Live
Neutral
Protective Earth
Live
Neutral
Functional Earth
4
Un = 100…230 Vac –15%/+10%
Pn = 15 VA, Um = 253 V
Un = 24 Vac/dc
AC:-15%/+10% or 20.4…26.4 Vac
DC:-25%/+30% or 18…32 Vdc
Pn = 10 W, Um = 253 V
2 ELECTRICAL CONNECTION
⊥
Ri ≤ 500
Ω
I+ I
mA
½
B1 B
B2
I ≤ 150 mA
U
ext
≤ 32Vdc/24 Vac
000
I ≤ 150 mA
indicator
2.1 Equipotential bonding system
The IFM 4080 K-EEx and IFM 4080 K / i-EEx flowmeters must always be incorporated into
the equipotential bonding system of the hazardous area. This connection can be achieved
through the PE/FE conductor connected to the PE terminal in the terminal compartment
(see figure 1) or through a separate PE conductor, cross sectional area at least 4 mm2,
connected to the external PE clamp, placed below the converter housing.
2.2 Regular IFC 090-EEx electronics unit
The field cables that enter the terminal compartment of the IFC 090-EEx signal converter unit
(i.e. power supply, current and binary outputs) are non-intrinsically safe. To connect external
devices to the signal output terminals, the wiring requirements for the type of protection of
the compartment (standard: increased safety "e", optional: flameproof "d") must be conform
to the international or national standard involved (e.g. EN 60079-14).
The terminal arrangement is shown by figure 1 below.
PULSE, STATUS OUTPUTS
RESP. CONTROL INPUTS
B1 B
BINARY CURRENT
OUTPUTS OUTPUT
Figure 1: Terminal arrangement in terminal compartment.
B2 I+ I L N (100…240Vac / 48…63 Hz)
U
L
PE (Protective Earth) terminal
FE (Functional Earth) terminal
ext
e.g. signal
½
L
(24Vac/dc)
½
+
_
Figure 2 Passive pulse/status output Figure 3 Active current output
5
Note:
terminals
½
L N 100…240 Vac
The binary outputs (terminals B1, B⊥ and B2) can only be configured as passive outputs,
the current output (terminals I+ and I) can only be configured as active output.
2.3 MODIS version IFC 090i-EEx electronics unit
The field cables of the non-intrinsically safe power supply and the intrinsically safe,
category "ia" signal outputs enter the terminal compartment of the IFC 090i-EEx signal
converter unit via two separate entrances. To connect external devices to the intrinsically
safe signal output terminals, the wiring requirements for their type of protection as well as of
the compartment (standard: increased safety "e", optional: flameproof enclosure "d") must be
conform to the international or national standard involved (e.g. EN 60079-14). Figure 4 below
shows the terminal arrangement inside the terminal compartment.
NC = not connected
Cable entrance for
intrinsically safe
signal cable
Connecting terminals
for intrinsically safe
signal in-/outputs
Metal dividing
plate IS / non-IS
Connecting
terminals for
non-intrinsically
safe power supply
NC 1L½0L
PE Protective Earth terminal
24 Vac/dc
Cable entrance for
non-intrinsically
safe power supply
cable
The non-intrinsically safe terminals for connection of the power supply (1L½ and 0L½) must
be connected according to the relevant standard code of practice for electrical apparatus
intended for use in potentially hazardous locations, type of protection Increased Safety "e" or
type of protection Flameproof Enclosure "d", depending on the type of protection of the
terminal compartment of the signal converter housing.
To gain access to the connection terminals of the power supply, the half-circular cover plate
of insulating material must be slightly lifted at one end and then rotated downwards, see the
instruction on the cover plate. After connection of the power supply cable, the half-circular
cover plate must be restored into its original position, so that the minimum clearances and
creepage distances towards the intrinsically safe signal in-/output terminals are maintained.
Figure 4: Terminal arrangement in terminal compartment.
6
See for details figure 5 .
Insulating cover plate
Sticker with handling information
for insulating cover plate
Sticker indicating the intrinsically
safe signal in-/output circuits
Figure 5: Terminal compartment MODIS version IFC 090i-EEx.
7
The PE (or FE) conductor must be connected to the press-fitted M5 clamp terminal marked
inside the terminal compartment. This conductor must be guided through the rectangular
opening in the metal dividing plate that separates the non-intrinsically safe power supply
terminals from the intrinsically safe signal in-/output terminals.
2.3.1 Connection diagrams MODIS
Section 7 shows the block diagram of the IFM 4080 K/ i…-EEx magnetic-inductive compact
flowmeter. The power supply (terminals 1L½, 0L½) is connected via cable B. The PE terminal
must be connected to the protective earth conductor of the mains supply.
The IFC 090i-EEx electronics unit is provided with intrinsically safe signal in-/output
circuits due to the installed pair of MODIS modules in accordance with the table below.
Module Terminal designation Function / Intrisically safe maximum data
Current output (0/4-20 mA), passive
P-SA
FA-ST
F-PA D, D ⊥
F-FF D, D ⊥
DC-I
(see note)
I ⊥ , I
B1, B1⊥ or B2, B2 ⊥
I+, B1+
Table 7: Overview of MODIS modules.
Ui = 30 V, Ii = 250 mA, Pi = 1.0 W
Ci = 5 nF, Li ≈ 0
Pulse (frequency) output or status in-/output, all passive
The function can be set by software
Ui = 30 V, Ii = 250 mA, Pi = 1.0 W
Ci = 5 nF, Li ≈ 0
Fieldbus module, type Profibus system, passive
Ui = 30 V, Ii = 300 mA, Pi = 4.2 W
Ci = 5 nF, Li ≈ 0
Fieldbus module, type Fieldbus Foundation, passive
Ui = 30 V, Ii = 300 mA, Pi = 4.2 W
Ci = 5 nF, Li ≈ 0
Intrinsically safe voltage source for the passive module
P-SA or FA-ST, so that active operation is possible.
Uo = 23.5 V, Io = 98 mA, Po = 0.6 W
Co = 132 nF 1, Lo = 4 mH
NOTES:
• Besides the shown intrinsically safe maximum values for voltages and current -which are
based on certain fault conditions as prescribed by the standard EN 50 020 - the nominal
values for current and voltage must also be respected otherwise a proper funtioning of
the modules is not guaranteed! See table 8 for the nominal values.
• The active module DC-I is needed in the 24 Vac/dc power supply version to form an
active current or pulse output in combination with one of the passive modules P-SA or
FA-ST. Due to limited space it is not available for 100...230 Vac supply versions.
Table 9 shows the possible combinations of the installed MODIS modules for the 24 Vac/dc
power supply version of the IFC 090i-EEx and table 10 for the 100-230 Vac version.
1
When modules P-SA (or FA-ST) and DC-I are connected in series, the internal capacitance Ci of 5 nF must be
subtracted from the Co of 132 nF. So the data plate will list a Co of 127 nF.
8
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