KROHNE OPTISWIRL 4200 Series Wiring diagram

Vortex flowmeter
Equipment category II 2G and II 2D, EPL Gb and Db
in protection type Flameproof enclosure Ex-d and
in protection type Increased safety Ex-e and
in protection type Equipment - dust ignition protection through enclosure Ex-t
OPTISWIRL 4200
OPTISWIRL 4200OPTISWIRL 4200
OPTISWIRL 4200 Supplementary Instructions
Supplementary InstructionsSupplementary Instructions
Supplementary Instructions
© KROHNE 08/2016 - 4005002601- AD OPTISWIRL4200 Ex-II2GD R01 en

CONTENTS
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OPTISWIRL 4200
1 Safety instructions 3
1.1 General notes ................................................................................................................... 3
1.2 EU conformity ................................................................................................................... 3
1.3 Approval according to the IECEx scheme ........................................................................ 3
1.4 Safety instructions............................................................................................................ 4
2 Device description 5
2.1 Device description ............................................................................................................ 5
2.2 Description code............................................................................................................... 5
2.3 Marking............................................................................................................................. 6
2.4 Flammable products ........................................................................................................ 7
2.5 Equipment category / EPL................................................................................................ 7
2.6 Protection types................................................................................................................ 8
2.7 Ambient temperature / temperature classes.................................................................. 9
2.8 Surface temperature for equipment category II 2 D...................................................... 14
2.9 Electrical data................................................................................................................. 15
3 Installation 17
3.1 Mounting ......................................................................................................................... 17
3.2 Special conditions........................................................................................................... 18
4 Electrical connections 19
4.1 General notes ................................................................................................................. 19
4.2 Power supply .................................................................................................................. 20
4.3 Inputs/Outputs................................................................................................................ 20
4.4 Grounding and equipotential bonding............................................................................ 21
4.5 Flow sensor circuits (remote version only) ................................................................... 22
5 Operation 23
5.1 Start-up........................................................................................................................... 23
5.2 Operation ........................................................................................................................ 23
5.3 Electrostatic charge .......................................................................................................23
6 Service 24
6.1 Maintenance ................................................................................................................... 24
6.2 Dismantling .................................................................................................................... 24
7 Notes 26

SAFETY INSTRUCTIONS 1
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1.1 General notes
These additional instructions apply to explosion protected versions of vortex flowmeters in
protection type Flameproof enclosure "d", Increased safety "e" and Equipment-dust ignition
protection through enclosure "t", equipment category II 2 G and II 2 D, EPL Gb and EPL Db. They
complete the standard documentation for the non-explosion protection versions.
The information given in this instruction contains only the data relevant to explosion protection
of category 2. 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 60079-7:2007, EN 60079-11:2012 and EN 60079-31:2014.
The EU declaration of conformity for the equipment category II 2 G and II 2 D 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.
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 60079-7:2006, IEC 60079-11:2011 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.
KIWA 14 ATEX 0016 X
KIWA 14 ATEX 0016 XKIWA 14 ATEX 0016 X
KIWA 14 ATEX 0016 X
IECEx KIWA 15.0021 X
IECEx KIWA 15.0021 XIECEx KIWA 15.0021 X
IECEx KIWA 15.0021 X

1 SAFETY INSTRUCTIONS
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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
explosion protection!
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 and
liquids. The signal converter includes either a 4...20 mA signal output with optional HART
®
communication or a bus connection. There are bus connections available according to the FISCO
model for connecting to the Foundation Fieldbus or Profibus PA. Signal converters with signal
output have a remote binary output and a remote current input.
2.2 Description code
The safety description code * consists of the following elements:
* positions which are not needed are omitted (no blank positions)
The remote version consisting of the flow sensor OPTISWIRL 4000 and the signal converter
VFC 200 F 020 is called the OPTISWIRL 4200 F.
Compact device
1 Product designation
2 Type series
3 Compact measuring device
4 Electrical signal output
Free - current output 4...20 mA with optional HART
®
communication or
FF - Foundation FIELDBUS bus connection or
PA - PROFIBUS PA bus connection
5 Explosion-protected version
Signal converter - remote version
1 Product designation
2 Type series
3 Remote version
4 Electrical signal output
Free - current output 4...20 mA with optional HART
®
communication or
FF - Foundation FIELDBUS bus connection or
PA - PROFIBUS PA bus connection
5 Sensor electronics VFC 020
6 Explosion-protected version
Flow sensor - remote version
1 Product designation
2 Type series of flow sensor
3 Remote version

2 DEVICE DESCRIPTION
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2.3 Marking
The marking of the devices in accordance with the description code is shown on the nameplates
below. On both the compact devices and the remote versions, the main plate is located on the
signal converter housing. On the remote versions there is an additional marking on the flow
sensor.
Compact devices with two signal converters for dual measurement (Dual Version) are each
marked with a nameplate, which is attached to each of the signal converter housings. The details
relevant to explosion protection are identical on both nameplates.
1 Device version OPTISWIRL 4200 C or VFC 200 F .. 020 / OPTISWIRL 4000 F
2 Production order number
3 Serial number
4 Year of manufacture
5 Marking acc. to KIWA 14 ATEX 0016 X or IECEx KIWA 15.0021 X
6 Permissible ambient temperature range
7 Electrical connection data
8 Observe the safety instructions
9 Internet address of the manufacturer

DEVICE DESCRIPTION 2
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2.4 Flammable products
Atmospheric conditions
An explosive atmosphere is a mixture of air and flammable gases, vapours, mists or dusts under
atmospheric conditions.
It is defined by the following values T
atm
= -20...+60°C / -4...+140°F and P
atm
= 0.8...1.1 bar /
11.6...15.9 psi.
Outside of this range, for most mixtures no key figures are available for the ignition behaviour.
Operating conditions
Vortex flowmeters operate outside of atmospheric conditions, which means that explosion
protection according to the ATEX directive, regardless of the zone assignment, is fundamentally
not applicable due to the lack of key safety data for the interior of the measuring section.
2.5 Equipment category / EPL
Vortex flowmeters are designed in category II 2 G / II 2 D or EPL Gb and EPL Db according to
EN 60079-0, EN 60079-1 and EN 60079-31 for use in zone 1 or zone 21. The inside of the
measuring unit is also approved for zone 1.
Vortex flowmeters are designed according to the "IECEx-Scheme" acc. to "Equipment Protection
Level [EPL] Gb or [EPL] Db".
CAUTION!
Operation with flammable products is only permitted as long as no explosive fuel/air mixture
builds up on the inside of the flowmeter under operating conditions. 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 system.
INFORMATION!
Definition of zone 1 acc. to EN 1127-1, Appendix B:
An area in which an explosive atmosphere, as a result of the mixture of flammable substances in
the form of gas, steam or mist with air, under normal operation may occasionally occur.
Definition of zone 21 acc. to EN 1127-1, Appendix B:
An area in which an explosive atmosphere may occasionally occur in the form of a cloud of
flammable dust in the air under normal operation.

2 DEVICE DESCRIPTION
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2.6 Protection types
The following types of protection are used:
Electronics
compartment
Ex db (Gb) or Ex tb (Db)
Ex db (Gb) or Ex tb (Db)Ex db (Gb) or Ex tb (Db)
Ex db (Gb) or Ex tb (Db)
Connection
compartment
either Ex db or Ex eb (Gb) or Ex tb (Db)
either Ex db or Ex eb (Gb) or Ex tb (Db)either Ex db or Ex eb (Gb) or Ex tb (Db)
either Ex db or Ex eb (Gb) or Ex tb (Db)
Flow sensor Ex ia (Gb or Db)
Ex ia (Gb or Db)Ex ia (Gb or Db)
Ex ia (Gb or Db)
The marking for the flameproof version of compact devices is acc. to
ATEX: II 2 G
II 2 GII 2 G
II 2 G
Ex db ia IIC T6...T2 Gb
Ex db ia IIC T6...T2 GbEx db ia IIC T6...T2 Gb
Ex db ia IIC T6...T2 Gb
Ex db eb ia IIC T6...T2 Gb
Ex db eb ia IIC T6...T2 GbEx db eb ia IIC T6...T2 Gb
Ex db eb ia IIC T6...T2 Gb
IECEx: Ex db ia IIC T6...T2 Gb
Ex db ia IIC T6...T2 GbEx db ia IIC T6...T2 Gb
Ex db ia IIC T6...T2 Gb
Ex db eb ia IIC T6...T2 Gb
Ex db eb ia IIC T6...T2 GbEx db eb ia IIC T6...T2 Gb
Ex db eb ia IIC T6...T2 Gb
The marking for the flameproof version of remote versions is acc. to
ATEX: II 2 G
II 2 GII 2 G
II 2 G Ex db [ia] IIC T6 Gb
Ex db [ia] IIC T6 GbEx db [ia] IIC T6 Gb
Ex db [ia] IIC T6 Gb (signal converter)
Ex db eb [ia] IIC T6 Gb
Ex db eb [ia] IIC T6 GbEx db eb [ia] IIC T6 Gb
Ex db eb [ia] IIC T6 Gb
II 2 G
II 2 GII 2 G
II 2 G Ex ia IIC T6...T2 Gb
Ex ia IIC T6...T2 GbEx ia IIC T6...T2 Gb
Ex ia IIC T6...T2 Gb (flow sensor)
IECEx: Ex db [ia] IIC T6 Gb
Ex db [ia] IIC T6 GbEx db [ia] IIC T6 Gb
Ex db [ia] IIC T6 Gb (signal converter)
Ex db eb [ia] IIC T6 Gb
Ex db eb [ia] IIC T6 GbEx db eb [ia] IIC T6 Gb
Ex db eb [ia] IIC T6 Gb
Ex ia IIC T6...T2 Gb
Ex ia IIC T6...T2 GbEx ia IIC T6...T2 Gb
Ex ia IIC T6...T2 Gb (flow sensor)
The marking for the dustproof version of compact devices is acc. to
ATEX: II 2 D
II 2 DII 2 D
II 2 D
Ex tb ia IIIC T70
Ex tb ia IIIC T70Ex tb ia IIIC T70
Ex tb ia IIIC T70°C...T240
C...T240C...T240
C...T240°C Db
C DbC Db
C Db
IECEx: Ex tb ia IIIC T70
Ex tb ia IIIC T70Ex tb ia IIIC T70
Ex tb ia IIIC T70°C...T240
C...T240C...T240
C...T240°C Db
C DbC Db
C Db
The marking for the dustproof version of remote versions is acc. to
ATEX: II 2 D
II 2 DII 2 D
II 2 D Ex tb [ia] IIIC T70
Ex tb [ia] IIIC T70Ex tb [ia] IIIC T70
Ex tb [ia] IIIC T70°C Db
C DbC Db
C Db (signal converter)
II 2 D
II 2 DII 2 D
II 2 D Ex ia IIIC T70
Ex ia IIIC T70Ex ia IIIC T70
Ex ia IIIC T70°C...T240
C...T240C...T240
C...T240°C Db
C DbC Db
C Db (flow sensor)
IECEx: Ex tb [ia] IIIC T70
Ex tb [ia] IIIC T70Ex tb [ia] IIIC T70
Ex tb [ia] IIIC T70°C Db
C DbC Db
C Db (signal converter)
Ex ia IIIC T70
Ex ia IIIC T70Ex ia IIIC T70
Ex ia IIIC T70°C...T240
C...T240C...T240
C...T240°C Db
C DbC Db
C Db (flow sensor)

DEVICE DESCRIPTION 2
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2.7 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 tables.
The tables take into account the following parameters:
•Ambient temperature T
amb
•Product temperature T
m
•Nominal size DN
•Heat resistance of the connecting cable
The marking contains the following information:
The marking contains the following information:The marking contains the following information:
The marking contains the following information:
II
IIII
II Explosion protection, group II
2
22
2Equipment category 2
G
GG
GGas explosion protection
D
DD
DDust ignition protection
Ex db
Ex dbEx db
Ex db Protection type "Flameproof enclosure"
Ex eb
Ex ebEx eb
Ex eb Protection type "Increased safety"
Ex tb
Ex tbEx tb
Ex tb Protection type "Equipment - dust ignition protection through enclosure"
Ex ia
Ex iaEx ia
Ex ia Protection type "Intrinsic safety", protection level "ia" (flow sensor circuit, compact device)
Ex [ia]
Ex [ia]Ex [ia]
Ex [ia] Protection type "Intrinsic safety", protection level "ia" (flow sensor circuit, remote version)
IIC
IICIIC
IIC Gas group, suitable for gas groups IIC, IIB and IIA
IIIC
IIICIIIC
IIIC Dust areas, suitable for groups IIIC, IIIB and IIIA
T6...T2
T6...T2T6...T2
T6...T2 Temperature class range
T70
T70T70
T70°C
CC
CMaximum surface temperature of the signal converter housing without dust coating at
ambient temperature 65°C / 149°F and product temperature 65°C/149°F
T70
T70T70
T70°C...
C...C...
C...
T240
T240T240
T240°C
CC
CMaximum surface temperature of the flow sensor housing without dust coating at ambient temperature 65°C / 149°F (is determined by the product temperature)
Gb
GbGb
Gb EPL, suitable for zone 1
Db
DbDb
Db EPL, suitable for zone 21
INFORMATION!
In principle, operation is possible in all ranges of the temperature classes T1...T6.

2 DEVICE DESCRIPTION
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The permitted ambient temperature range is indicated on the nameplate; depending on the
device version it is T
amb
= -40...+65°C / -40...+149°F.
The minimum product temperature is -40°C/-40°F.
When using in zone 21, observe the maximum permissible product and ambient temperatures
for temperature class 2 and the information for use of a heat-resistant connecting cable and
cable entry.
INFORMATION!
The maximum permissible product 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.