KROHNE OPTISWIRL 4200 Series Wiring diagram

Vortex flowmeter
Equipment category II 2G, EPL Gb
in type of protection Intrinsic safety "i"
OPTISWIRL 4200
OPTISWIRL 4200OPTISWIRL 4200
OPTISWIRL 4200 Supplementary Instructions
Supplementary InstructionsSupplementary Instructions
Supplementary Instructions
© KROHNE 01/2017 - 4004274302 - AD OPTISWIRL4200 Ex-II2G R02 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 Type code .......................................................................................................................... 5
2.3 Marking............................................................................................................................. 6
2.4 Flammable products ........................................................................................................ 8
2.5 Equipment category / EPL................................................................................................ 8
2.6 Protection types................................................................................................................ 9
2.7 Ambient temperature / temperature classes.................................................................. 9
2.8 Electrical data................................................................................................................. 15
3 Installation 16
3.1 Mounting ......................................................................................................................... 16
3.2 Special conditions........................................................................................................... 17
4 Electrical connections 18
4.1 General notes ................................................................................................................. 18
4.2 Power supply .................................................................................................................. 18
4.3 Inputs / Outputs .............................................................................................................. 18
4.4 Grounding and equipotential bonding............................................................................ 19
4.5 Flow sensor circuits (remote version only) ................................................................... 20
5 Operation 21
5.1 Start-up........................................................................................................................... 21
5.2 Operation ........................................................................................................................ 21
5.3 Electrostatic charge .......................................................................................................21
6 Service 22
6.1 Maintenance ................................................................................................................... 22
6.2 Dismantling .................................................................................................................... 22

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 Intrinsic safety "i", equipment category II 2 G and EPL Gb. They complete the
standard manual 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 standard 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.
The EU declaration of conformity for the equipment category II 2 G is based on the EU type
examination certificate of the KIWA ExVision:
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 was tested in accordance
with the IECEx Certification Scheme for Explosive Atmospheres acc. to IEC 60079-0 and
IEC 60079-11. The number of the IECEx 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 0017X
KIWA 14 ATEX 0017XKIWA 14 ATEX 0017X
KIWA 14 ATEX 0017X
IECEx KIWA 15.0003X
IECEx KIWA 15.0003XIECEx KIWA 15.0003X
IECEx KIWA 15.0003X

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!
The operator or his agent is responsible for observing any additional standards, directives or
laws if required due to operating conditions or place of installation. This applies in particular to
the use of easily detachable process connections when measuring flammable media.

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 separated binary output and current input.
2.2 Type 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 OPTISWIRL 4000 F flow sensor and the VFC 200 F signal
converter 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 Intrinsically safe supply
6 Ex - 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 Intrinsically safe supply
6 VFC 020 sensor electronics
7 Ex - 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 affixed to each of the signal converter housings.
The details relevant to explosion protection are identical on both nameplates.
Figure 2-1: Example of nameplate for compact version
1 Device version OPTISWIRL 4200 C
2 Production order number
3 Serial number
4 Year of manufacture
5 Ex data acc. to KIWA 14 ATEX 0017X or IECEx KIWA 15.0003X
6 Permissible ambient temperature range
7 Maximum values intrinsically safe circuits
8 Safety instructions, disposal and data matrix
9 Internet address of the manufacturer

DEVICE DESCRIPTION 2
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Figure 2-2: Example of nameplates for remote version
1 Device version VFC 200 F ... 020 / OPTISWIRL 4000 F
2 Production order number
3 Serial number
4 Year of manufacture
5 Ex data acc. to KIWA 14 ATEX 0017X or IECEx KIWA 15.0003X
6 Permissible ambient temperature range
7 Maximum values intrinsically safe circuits
8 Safety instructions, disposal and data matrix
9 Internet address of the manufacturer

2 DEVICE DESCRIPTION
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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 and EPL Gb according to EN 60079-0 and
EN 60079-11 for use in zone 1. The inside of the measuring unit is also permitted for zone 1.
Vortex flowmeters are designed according to the "IECEx-Scheme" acc. to "Equipment Protection
Level [EPL] Gb".
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 may occasionally occur as a result of the mixture of
flammable substances in the form of gas, steam or mist with air under normal operation.

DEVICE DESCRIPTION 2
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2.6 Protection types
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 is:
ATEX II 2 G Ex ia IIC T6...T2 Gb
II 2 G Ex ia IIC T6...T2 GbII 2 G Ex ia IIC T6...T2 Gb
II 2 G Ex ia IIC T6...T2 Gb (compact device; flow sensor in remote version)
or
II 2 G Ex ia IIC T6 Gb
II 2 G Ex ia IIC T6 GbII 2 G Ex ia IIC T6 Gb
II 2 G Ex ia IIC T6 Gb (signal converter in remote version)
IECEx Ex ia IIC T6...T2 Gb
Ex ia IIC T6...T2 GbEx ia IIC T6...T2 Gb
Ex ia IIC T6...T2 Gb (compact device; flow sensor in remote version)
or
Ex ia IIC T6 Gb
Ex ia IIC T6 GbEx ia IIC T6 Gb
Ex ia IIC T6 Gb (signal converter in remote version)
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
Ex ia
Ex iaEx ia
Ex ia Intrinsically safe, protection level "ia"
IIC
IICIIC
IIC Gas group, suitable for gas groups IIC, IIB and IIA
T6...T2
T6...T2T6...T2
T6...T2 Temperature class range
(compact device; flow sensor in remote version)
T6
T6T6
T6 Temperature class
(signal converter in remote version)
Gb
GbGb
Gb EPL, suitable for zone 1
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.
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.