KROHNE OPTISWIRL 5080 Wiring diagram

Vortex flowmeter for high temperature applications
Intrinsically safe version
ATEX category:
ATEX category:ATEX category:
ATEX category: II 1 G and II 2 D
Equipment protection level:
Equipment protection level:Equipment protection level:
Equipment protection level: Ga and Db
OPTISWIRL 5080
OPTISWIRL 5080OPTISWIRL 5080
OPTISWIRL 5080 Supplementary Instructions
Supplementary InstructionsSupplementary Instructions
Supplementary Instructions
© KROHNE 04/2020 - 4007962401 - AD OPTISW5080 Exi Ga-Db en R01

CONTENTS
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OPTISWIRL 5080
1 Safety instructions 3
1.1 General notes ................................................................................................................... 3
1.2 EU conformity ................................................................................................................... 3
1.3 Approval according to the IECEx scheme ........................................................................ 4
1.4 Safety instructions............................................................................................................ 4
2 Device description 5
2.1 Device description ............................................................................................................ 5
2.2 Marking............................................................................................................................. 5
2.3 Safety specifications......................................................................................................... 7
2.4 Flammable products ........................................................................................................ 7
2.5 Ambient temperature / temperature classes.................................................................. 8
2.6 Electrical data................................................................................................................... 9
3 Installation 10
3.1 Mounting ......................................................................................................................... 10
3.2 Special conditions........................................................................................................... 11
4 Electrical connections 12
4.1 General notes ................................................................................................................. 12
4.2 Power supply .................................................................................................................. 12
4.3 Outputs ........................................................................................................................... 13
4.4 Grounding ....................................................................................................................... 13
5 Operation 14
5.1 Start-up........................................................................................................................... 14
5.2 Operation ........................................................................................................................ 14
5.3 Electrostatic charge .......................................................................................................14
6 Service 15
6.1 Maintenance ................................................................................................................... 15
6.2 Dismantling .................................................................................................................... 15
7 Notes 17

SAFETY INSTRUCTIONS 1
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1.1 General notes
These additional instructions apply to intrinsically safe versions of vortex flowmeters with
following specifications:
•ATEX category: II 1 G and II 2 D
•Equipment protection level (EPL): Ga and Db
•Ex marking: Ex ia IIC T4 Ga and Ex tb IIIC T103°C Db
They complete the standard documentation for the non-explosion protected versions.
The information given in this instruction contains only the data relevant to explosion protection.
The technical details given in the manual for the non-explosion protected versions remain
unchanged unless they will be excluded or replaced by this instruction.
1.2 EU conformity
The manufacturer declares with the EU declaration of conformity on his own responsibility
conformity with the protection goals of directive 2014/34/EU for use in hazardous areas with gas
and dust.
Conformity with harmonised standards was checked by a notified body in accordance with
EN 60079-0:2012, EN 60079-1:2014, EN 60079-11:2012, EN 60079-26:2007 and
EN 60079-31:2014.
The EU declaration of conformity for the equipment categories is based on the EU type
examination certificate:
The "X" after the certificate number refers to special conditions for safe use of the device, which
have been listed in these instructions.
If needed the EU type examination certificate can be downloaded from the manufacturer's
website.
Sira 19ATEX2001 X
Sira 19ATEX2001 XSira 19ATEX2001 X
Sira 19ATEX2001 X

1 SAFETY INSTRUCTIONS
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1.3 Approval according to the IECEx scheme
Conformity of the vortex flowmeter for use in hazardous areas with gas and dust was tested in
accordance with the "IECEx Certification Scheme for Explosive Atmospheres" according to
IEC 60079-0:2011, IEC 60079-1:2014, IEC 60079-11:2011, IEC 60079-26:2004 and
IEC 60079-31:2013. The number of the IEC certificate is:
The "X" after the certificate number refers to special conditions for safe use of the device, which
have been listed in these instructions.
If needed, the IEC certificate can be downloaded from the manufacturer's website.
1.4 Safety instructions
If these instructions are not followed, there is a risk of explosion.
Assembly, installation, start-up and maintenance may only be performed by personnel trained in
personnel trained inpersonnel trained in
personnel trained in
explosion protection
explosion protectionexplosion protection
explosion protection!
IECEx SIR 19.0001 X
IECEx SIR 19.0001 XIECEx SIR 19.0001 X
IECEx SIR 19.0001 X
CAUTION!
Operating conditions and place of installation may require compliance with additional standards,
directives or laws. The responsibility for compliance rests solely with the operator or his agent.

DEVICE DESCRIPTION 2
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2.1 Device description
Vortex flowmeters measure and display the flow of flammable and non-flammable gases, steam
and liquids. They transmit a 4...20 mA or digital multidrop, and a pulse output signal, as
applicable, using HART
®
communication protocol for remote configuration, calibration and
monitoring.
2.2 Marking
The marking of the devices is shown on the nameplate below. On both the compact devices and
the remote versions, the main plate is located on the signal converter housing. When the
flowmeter is remotely mounted, the junction box on the flow sensor has an nameplate showing
its hazardous location rating.
Compact devices with two signal converters for dual measurement (Dual Version) are each
marked with a nameplate. The details relevant to explosion protection are identical on both
nameplates.
Figure 2-1: Example of a nameplate for the compact version
1 Model number and serial number
2 Marking according to the notified body
3 Note for disposal
4 Manufacturer logo
5 IP rating for enclosure
6 Manufacturer address
7 Note for electrical data
8 Warning for opening enclosure in hazardous areas

2 DEVICE DESCRIPTION
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The certification design feature is printed on the nameplate as part of the model code.
The location of the feature within the model code is position "j" and shown in the following
example:
Example: 50F-abcdefghij
jjjk
•j = E: ATEX intrinsically safe, category II 1 G and II 2 D
•j = L: IECEx intrinsically safe, EPL Ga and Db
Example: 50W-abcdefghij
jjjk
•j = E: ATEX intrinsically safe, category II 1 G and II 2 D
•j = L: IECEx intrinsically safe, EPL Ga and Db
Figure 2-2: Example of a nameplate for the remote version
1 Model number and serial number
2 Product designation
3 IP rating for enclosure
4 Warning for opening enclosure in hazardous areas
5 Note for disposal
6 Marking according to the notified body
7 Note for electrical data
8 Manufacturer logo and address

DEVICE DESCRIPTION 2
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2.3 Safety specifications
2.4 Flammable products
Atmospheric conditions:
Atmospheric conditions:Atmospheric conditions:
Atmospheric conditions:
The standard atmospheric conditions under which it may be assumed that Ex equipment can be
operated are:
•Temperature: -20...+60°C / -4...+140°F
•Pressure: 80...110 kPa (0.8...1.1 bar) / 11.6...15.9 psi
•Air with normal oxygen content, typically 21%v/v
Ex equipment operating outside the standard temperature range must be tested and certified
(e.g. for ambient temperature range -40...+65°C / -40...+149°F).
Ex equipment operating outside the standard atmospheric pressure range and standard oxygen
content is not permitted.
Operating conditions:
Operating conditions:Operating conditions:
Operating conditions:
Vortex flowmeters operate outside the standard atmospheric pressure range, which means that
explosion protection, regardless of the zone assignment, is fundamentally not applicable for the
measuring unit (piping).
Type of protection Hazardous area classification
Gas environment
Gas environmentGas environment
Gas environment
Equipment protection by intrinsic safety:
Equipment protection by intrinsic safety:Equipment protection by intrinsic safety:
Equipment protection by intrinsic safety:
ATEX category: II 1 G
Equipment protection level (EPL): Ga
Ex marking: Ex ia IIC T4 Ga
Compact and remote versions
Zone 0, zone 1 or zone 2
Gas group IIA, IIB or IIC
Temperature class range T1...T4
Dust environment
Dust environmentDust environment
Dust environment
Dust ignition protection by enclosure:
Dust ignition protection by enclosure:Dust ignition protection by enclosure:
Dust ignition protection by enclosure:
ATEX category: II 2 D
Equipment protection level (EPL): Db
Ex marking: Ex tb IIIC T103°C Db
Compact and remote versions
Zone 21 or zone 22
Dust group IIIA, IIIB or IIIC
Maximum surface temperature 103°C/
217°F at process and ambient
temperature 80°C/176°F
Table 2-1: Safety specifications
CAUTION!
Operation with flammable products is only permitted as long as no explosive fuel/air mixture
builds up inside of the piping at the same time the atmospheric conditions are exceeded.
The operator is responsible to ensure that the flowmeter is operated safely in terms of the
temperature and pressure of the products used. In case of operation with flammable products
the measuring units must be included in the periodic pressure tests of the piping.

2 DEVICE DESCRIPTION
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2.5 Ambient temperature / temperature classes
Because of the influence of the temperature of the product, no fixed temperature class is
assigned to vortex flowmeters. The temperature class of these devices is rather a function of the
product temperature and ambient temperature that is present and the specific device version.
The classification is outlined in the following table.
The tables take into account the following parameters:
•Ambient temperature T
amb
•Product temperature T
m
INFORMATION!
The maximum permissible process temperatures listed in the tables are valid under
the following conditions:
• The measuring device is installed and operated in accordance with the manufacturer's
installation instructions.
• It must be ensured that the flowmeter is not heated by the effects of additional heat radiation
(sunshine, neighbouring system components) and thus operated above the permissible
ambient temperature range.
• Insulation must be limited to the piping. Unobstructed ventilation of the signal converter
must be ensured.
Temperature class Permissible ambient
temperature
Permissible process temperature
T4 -40...+80°C / -40...+176°F-40...+130°C / -40...+266°F
T3 -40...+80°C / -40...+176°F 1-40...+190°C / -40...+374°F
T2 -40...+80°C / -40...+176°F 1-40...+290°C / -40...+554°F
T1 -40...+80°C / -40...+176°F 1-40...+430°C / -40...+806°F
Table 2-2: Permissible ambient and process temperatures
1For safe operation derate the ambient temperature to a lower value that ensures the housing temperature does not
exceed 80°C / 176°F at the housing reference point.
WARNING!
Process temperatures above 130
° C / 266 ° F are permitted only if the temperature 80 ° C/176 ° F at
the housing reference point is not exceeded during operation. The operator has to ensure the
temperature limit by temperature measurements at the housing reference point. For high
temperature applications positioning the electronics housing to the side or bottom and/or piping
insulation is recommended to assure the temperature limit is not exceeded.
INFORMATION!
The housing reference point is located next to the flowmeters external ground terminal.
INFORMATION!
When the LCD indicator is used, the low temperature limit is -20
° C/-4 ° F.

DEVICE DESCRIPTION 2
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2.6 Electrical data
Signal circuits
Signal circuitsSignal circuits
Signal circuits
The vortex flowmeter signal circuits may only be connected to separate, certified, intrinsically
safe isolating amplifiers or Zener barriers connected to separate, intrinsically safe circuits with
the following maximum values per circuit:
The pulse output circuit is considered to be active. The following maximum values apply:
Pulse output maximum values
Pulse output maximum valuesPulse output maximum values
Pulse output maximum values
U
o
=6.51V;I
o
=6.6mA
Flow sensor circuits
Flow sensor circuitsFlow sensor circuits
Flow sensor circuits
With the compact device, the intrinsically safe flow sensor circuits are designed as internal
circuits.
When it comes to the remote versions, the intrinsically safe flow sensor circuits are led through.
Signal circuit
Terminals
U
i
[V] I
i
[mA] P
i
[W] C
i
[nF] L
i
[μH]
Current output 4...20 mA HART
®
+, -
30 110 0.8 0 0
Pulse output
+, - 30 110 0.8 0.3 0
Table 2-3: Maximum values for signal circuits
WARNING!
The negative terminal for current output shall only be connected to a load resistor connected to
the negative side of the incoming power supply.
INFORMATION!
The verification of intrinsic safety is not necessary for the interconnection of vortex flow sensor
connected to the signal converter, if the cable length doesn't exceed 15 m / 50 ft using the
supplied cable.

3 INSTALLATION
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3.1 Mounting
Installation and setup must be carried out according to the applicable installation standards
(e.g. EN 60079-14) by qualified personnel trained in explosion protection.
The information given in the manual and these instructions must always be observed.
Vortex flowmeters must be installed in such a way that
•no external forces are affecting the indication unit.
•the device is accessible for any necessary visual inspections and can be viewed from all sides.
•the nameplate is clearly visible.
•it can be operated from a location with secure footing.
Important notes for mounting
Important notes for mountingImportant notes for mounting
Important notes for mounting
•Ensure area is known to be non hazardous before removing cover.
•Do not open when energised or when an explosive atmosphere may be present.
•Explosion hazard: Substitution of components may impair intrinsic safety.
•Explosion hazard: Do not disconnect equipment unless power has been turned off or the area
is known to be non hazardous.
CAUTION!
The manufacturer is not liable for any damage resulting from improper use or use other than the
intended purpose. This applies in particular to hazards due to insufficient corrosion resistance
and suitability of the materials in contact with product.

INSTALLATION 3
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3.2 Special conditions
Preventing ignition of flammable atmospheres
Preventing ignition of flammable atmospheresPreventing ignition of flammable atmospheres
Preventing ignition of flammable atmospheres
Since live maintenance is not specified, to prevent ignition of flammable atmospheres,
disconnect power before servicing unless the area is certified to be non hazardous.
The following conditions apply when the vortex flowmeters are used in hazardous gas and
explosive dusts atmospheres:
•The flow sensor of the remote version shall only be connected to the remote signal converter
type OPTISWIRL VFC 080F, bearing certificate number
Sira 19ATEX2001X / IECEx SIR 19.0001X.
•If the fixing bolts are to be replaced, they shall be replaced with bolts with a tensile strength
of at least 240 N/mm².
Devices marked as category 1 G or EPL Ga
Devices marked as category 1 G or EPL GaDevices marked as category 1 G or EPL Ga
Devices marked as category 1 G or EPL Ga
Devices marked as category II 1 G or equipment protection level Ga and used in hazardous areas
requiring this category must be installed in such a way that, even in the event of rare incidents,
these products cannot become an ignition source.
The following conditions apply when the vortex flowmeters are used in hazardous gas
atmospheres only and are not applicable when used with explosive dusts:
•The negative terminal of the loop power shall only be connected to a load resistor to the
negative side of the incoming power supply.
•As aluminium is used at the accessible surface of the signal converter housing, in the event of
rare incidents, ignition sources due to impact and friction sparks could occur. This shall be
considered when the OPTISWIRL 5080 vortex flowmeter is being installed in group IIC, zone 0
classified locations.

4 ELECTRICAL CONNECTIONS
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4.1 General notes
The separate intrinsically safe signal circuits are electrically connected in the terminal
compartment of the signal converter. The circuits are designed in type of protection "intrinsic
safety" and galvanically not isolated from ground.
The intrinsically safe measuring sensor circuits of the remote version are connected in the
connection boxes.
The connecting cables should be selected according to the applicable installation standards
(e.g. EN 60079-14) and the maximum operating temperature.
The connecting cable between the flow sensor and the converter with remote systems is part of
the delivery.
•The connecting cables must be fixed and laid so they are sufficiently protected against
damage.
•All cores that are not used must be securely connected to the ground potential of the
hazardous area or carefully insulated against each other and against ground (test voltage
≥500 V
eff
).
•Lay cables so as to ensure that there is sufficient distance between surfaces of the flow
sensor and the connecting cable.
•Supplied blind plugs / cable entries guarantee protection against foreign objects and water
(ingress protection) IP66 according to EN 60529.
•Before connecting or loosening the equipotential bonding cable, ensure there are no
differences in potential.
•Any existing cable shields should be connected to ground according to applicable installation
regulations (EN 60079-14). A terminal in the terminal compartment permits a short way
grounding of the cable shields.
•The outer diameter of the connecting cable must be within the sealing range of the cable
entry.
•Unused cable entries are to be closed by suitable blind plugs.
Ensure that the gaskets and sealing rings are tight.
4.2 Power supply
The vortex flowmeter does not require a separate power supply. The required supply for the
built-in electronics is provided via the 4...20 mA analogue output.
INFORMATION!
Lock on electronics and terminal compartment
Lock on electronics and terminal compartmentLock on electronics and terminal compartment
Lock on electronics and terminal compartment
The electronics and terminal compartment may be opened in hazardous areas when measuring
and carrying out adjustments.

ELECTRICAL CONNECTIONS 4
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4.3 Outputs
The terminal assignment is described in the standard manual. The signal circuits of the vortex
flowmeters must only be connected to certified intrinsically safe circuits.
For more information refer to chapter "Electrical data".
The 4...20 mA current output circuit and the pulse output circuit are galvanically isolated from
each other. Both, the 4...20 mA current output and the pulse output terminal are galvanically
isolated from earth ground (test voltage 500 VAC or 707 VDC between terminal +, - and earth
ground terminal).
4.4 Grounding
Equipotential bonding
Vortex flowmeter must be connected to the equipotential bonding system of the hazardous area
either to the internal or external ground terminal.
The access to the terminals and the connection of the terminals is explained in detail in the
standard manual.
Figure 4-1: Equipotential bonding
1 Internal ground terminal
2 M20 thread for cable gland, conduit or blind plug
INFORMATION!
In the case of compact flowmeters and flow sensors with flange connections, the flow sensor
may be electrically conductive connected to the piping.

5 OPERATION
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5.1 Start-up
Start-up may only initiate when the vortex flowmeter:
•is correctly installed in the system and connected.
•has been checked for the proper state with regard to its installation and connection
requirements.
•has been correctly locked to the electronics and terminal compartment.
The user of the system must have it checked before start-up in compliance with the national
regulations for checks before start-up.
5.2 Operation
Vortex flowmeters must be operated in such a way that they remain within the maximum and
minimum permissible temperatures and pressures and the electrical limit values.
Vortex flowmeters may only be operated if the equipment parts necessary for safety are effective
in the long run, and are not rendered inoperable during operation.
In case of operation with flammable products the measuring units must be included in the
periodic pressure tests of the system.
Operating the signal converter insert during operation is permitted. To do so, remove the
housing cover. Close the housing cover immediately after adjustment of the signal converter
insert.
Terminal compartments (protection type "intrinsic safety") may be opened even in an energised
state in hazardous area.
Work on electrical connections (e.g. configuration via the HART
®
interface) is also permitted in
an energised state. Terminal compartments must be closed immediately upon completion of the
work.
5.3 Electrostatic charge
In order to avoid ignition hazards due to electrostatic charge, vortex flowmeters may
not be used in areas with:
•processes that generate strong charges,
•mechanical friction and cutting processes,
•spraying of electrons (e.g. in the vicinity of electrostatic painting systems) or
•pneumatically conveyed dust is exposed.
CAUTION!
Electrostatic charging of the housing surface by friction must be avoided.
The devices must not be dry cleaned.

SERVICE 6
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6.1 Maintenance
Maintenance work of a safety-relevant nature within the meaning of explosion protection may
only be carried out by the manufacturer, his authorised representative or under the supervision
of authorised inspectors.
Fluids containing abrasive particles and flowing at high rates can cause significant wear to pipes.
If these conditions exist, check the flowmeter periodically for wear.
If the flow rate signal appears to have a calibration shift or goes to zero, check the flowmeter for
corrosion or wear.
For systems in hazardous areas, regular checks are required in order to maintain the proper
condition.
The following checks are recommended:
•Check the housing, the cable entries and the feed lines for corrosion and/or damage.
•Check the measuring unit and the piping connections for leakage.
•Check the measuring unit and the indicator for dust deposits.
•Include the flowmeter in the periodic pressure test of the process line.
6.2 Dismantling
Exchanging the built-in equipment
The dismantling and installation is within the responsibility of the operator.
Due to the modular design of the vortex flowmeters, from a safety perspective, the electrical
equipment built into the signal converter can be replaced with identical spare parts. To do so,
remove the housing cover. Close the housing cover immediately after the spare parts are
exchanged. Ensure that the cover seal is tight.
General notes
Only identical parts or components from the manufacturer may be used.
If replacing parts, do not use parts made of other materials or parts that in any other way change
the device as described in the model code on the nameplate.
The device must be de-energised, if it is absolutely necessary to open the flameproof enclosure
or the dustproof electronics compartment in the presence of a potentially explosive atmosphere.
Before connecting or disconnecting the electrical connection cables of the device, make sure
that all cables leading to the signal converter are isolated from the ground of the hazardous
area.
Process fluid
If process containing parts which need to be disassembled:
1. Make sure that process fluid is not under pressure or at high temperature.
2. Take proper precautions concerning leakage or spillage of any toxic or otherwise dangerous
fluid. Follow any material safety data sheet (MSDS) recommendations.

6 SERVICE
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Exchanging the entire device
The dismantling and installation is within the responsibility of the operator.
Before disconnecting the electric connection cable of the device, make sure that all cables
leading to the indication unit are isolated from the ground of the hazardous area.
Observe the information above. Also, ensure that all process connections and the pipeline are
depressurised and free of product. Where environmentally critical products are concerned,
carefully decontaminate the wetted parts of the flange system after dismantling.
CAUTION!
• Pressurised pipes have to be depressurised before removing the measuring unit.
• In the case of environmentally critical or hazardous products, appropriate safety precautions
must be taken with regard to residual liquids in the measuring unit.
• New gaskets have to be used when re-installing the device in the piping.

NOTES 7
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7 NOTES
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NOTES 7
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KROHNE –Process instrumentation and measurement solutions
• Flow
• Level
• Temperature
• Pressure
• Process Analysis
• Services
Head Office KROHNE Messtechnik GmbH
Ludwig-Krohne-Str. 5
47058 Duisburg (Germany)
Tel.: [phone]
Fax: [phone]
[email protected]
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