3-beam ultrasonic flowmeters
for custody transfer
of liquid hydrocarbons
ufc iii f/...eex ultrasonic flow converter
ufs iii f/...eex ultrasonic flow sensor (43 pages)
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.
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.
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: •...
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.
2 ELECTRICAL CONNECTION 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 mm connected to the external PE clamp, placed below the converter housing.
Note: 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"...
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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.
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.
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MODIS modul Nominal values for voltage and current P-SA Current: 4 .. 20 mA (passive current output ) Working voltage: 8 .. 30V Voltage drop : 8V at 4mA FA-ST Working voltage: 6 .. 30V (frequency/pulse/status output Working current: < 110 mA or control input) Voltage drop: in ON-state: <...
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The flameproof terminal feed-through has seven terminals in total, the top two terminals are used for connection of the power supply, the third one is only used for mounting of a metal dividing plate with insulating cover plate. The remaining four are used for the intrinsically safe signal in-/output circuits of the installed MODIS modules.
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Figure 6: Connection diagrams 1 through 4 of the intrinsically safe signal in-/outputs.
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Figure 7: Connection diagrams 5 through 8 of the intrinsically safe signal in-/outputs.
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Figure 8: Connection diagrams 9 through 12 of the intrinsically safe signal in-/outputs.
As a consequence, the chapters included in the standard Installations and operating instructions, giving detailed descriptions of these menus, must be skipped. 4 SERVICE See section 8 or contact your (local) Krohne sales representative for the ordering information of spare parts or replacements of IFC 090…-EEx electronics units and/or power fuses.
4.1 Replacement of electronics unit or power fuse(s) IMPORTANT ! The following instructions must be followed carefully, if the IFC 090/…-EEx signal converter housing has to be opened respectively closed again ! Before opening: ♦ Make absolutely sure that there is no explosion hazard ! ♦...
4.1.1 Replacement of electronics unit Refer to the standard Installation and Operating Instructions for detailed information about resetting and reprogramming the new electronics unit after replacement. The customer specific data (like the value of the internal totalizer) are stored in DATAPROM IC-18, which must be transferred from the "old"...
C: Electrode circuit Copper earth strip connector (3-pole) B: Field circuit Display unit connector (2-pole) (back side) Flat cable of display unit Figure 11: IFC 090-EEx electronics unit (115/230 Vac version). 4.1.2 Replacement of power fuse(s) The power fuse(s) of the different IFC 090…-EEx electronics units (regular or MODIS) have a different rating and are located on slightly different locations on the power supply printed circuit board.
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Power fuses F1 and F2 (see detail on the right) Figure 12: IFC 090-EEx electronics unit with 24 Vac/dc power supply. Regular IFC 090-EEx with 100…230 Vac power supply note the instructions in Section 3.1 ("Before opening") Before commencing work, Then continue as follows: 1.
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Mains transformer Indication of 115/230 Vac version voltage selector (black dot = notch) Sticker with fuse rating Power fuse F1 (in fuse-holder) Voltage selector Figure 13: Power supply version 115/230 Vac. MODIS version IFC 090i-EEx note the instructions in Section 3.1 ("Before opening") Before commencing work, Then continue as follows: 1.
NOTE: The power fuse on the 100…230 Vac version is located on a slightly different position than the fuse of the 24 Vac/dc version ! See location "Fuse_230V". Fuse_230V PTB 97 ATEX 2265 U [EEx ia] IIC PTB 97 ATEX 2265 U Power fuse (24 Vac/dc power supply) Figure 14: IFC 090i-EEx electronics unit (24 Vac/dc version is shown).
5 CONNECTING CABLES NOTE: The below described cables are shown in the connection diagram on the following page. Cable A: Signal cable for current output and binary outputs (pulse and status output). The cable parameters must be in accordance with the regulations in the EN 60079-14 "Electrical installations in hazardous locations"...
7 CONNECTION DIAGRAM INTRINSICALLY SAFE SIGNAL IN-/OUTPUTS 100-230 Vac PE 100-230 Vac L ½ L ½ (i.e. MODIS) 24 Vac/dc L ¾ L ¾ SIGNAL IN-/OUTPUTS FE 24 Vac/dc IFC 090-EEx Signal Converter 1L ½ 0L ½ B1 B ⊥ B2 I+ I BINARY CURRENT MAINS...
8 ORDERING INFORMATION In case of questions about spare or replacing parts contact your local Krohne representative. The part numbers of the several parts are listed in the sections below. 8.1 Regular IFC 090-EEx electronics unit The below listed table shows the available regular (non-MODIS) IFC 090-EEx versions with the possible power supply units and the accompanying power fuse(s).
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