KROHNE OPTIFLUX2000, OPTIFLUX4000, OPTIFLUX5000, OPTIFLUX-6000, OPTIFLUX-7300-IFC User Manual

OPTIFLUX

OPTIFLUX

OPTIFLUXOPTIFLUX

Ex addendum

Supplementary instructions

Supplementary instructions

Supplementary instructions Supplementary instructions

© KROHNE 07/2010 - 7309482600 - AD EX IFC 300 R06 en

CONTENTS

OPTIFLUX

1 Introduction 4

1.1 Safety instructions from the manufacturer ..................................................................... 4

1.1.1 Disclaimer ............................................................................................................................... 4

1.1.2 Product liability and warranty ................................................................................................ 5

1.1.3 Information concerning the documentation........................................................................... 5

1.1.4 Warnings and symbols used................................................................................................... 6

1.1.5 Manufacturer .......................................................................................................................... 6

1.2 Safety instructions for the operator................................................................................. 7

1.3 Approvals.......................................................................................................................... 8

1.4 OPTIFLUX 2000 / 4000 ...................................................................................................... 9

1.4.1 Compact versions ................................................................................................................... 9

1.4.2 Field versions........................................................................................................................ 10

1.5 OPTIFLUX 5000 ............................................................................................................... 11

1.5.1 Compact versions ................................................................................................................. 11

1.5.2 Field versions........................................................................................................................ 12

1.6 OPTIFLUX 6000 ............................................................................................................... 13

1.6.1 Compact versions ................................................................................................................. 13

1.6.2 Field versions........................................................................................................................ 14

1.7 OPTIFLUX 7000 ............................................................................................................... 15

1.7.1 Compact versions ................................................................................................................. 15

1.8 IFC 300 F ......................................................................................................................... 16

1.9 Marking labels ................................................................................................................ 17

2 Temperature limits 18

2.1 OPTIFLUX 2000 / 4000 .................................................................................................... 18

2.1.1 Compact versions ................................................................................................................. 18

2.1.2 Field versions........................................................................................................................ 20

2.2 OPTIFLUX 5000 ............................................................................................................... 22

2.2.1 Compact versions ................................................................................................................. 22

2.2.2 Field versions........................................................................................................................ 23

2.3 OPTIFLUX 6000 ............................................................................................................... 24

2.3.1 Compact versions ................................................................................................................. 24

2.3.2 Field versions........................................................................................................................ 25

2.4 OPTIFLUX 7000 ............................................................................................................... 26

2.4.1 Compact versions ................................................................................................................. 26

2.5 IFC 300 F ......................................................................................................................... 26

3 Connection diagrams for field versions 27

3.1 Signal cable A ................................................................................................................. 27

3.2 Signal cable B ................................................................................................................ 28

3.3 Equipotential bonding..................................................................................................... 29

3.4 Signal cable connections................................................................................................ 30

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OPTIFLUX

CONTENTS

4 Electrical connections 31

4.1 Installation instructions ................................................................................................. 31

4.2 Connection of IFC 300..................................................................................................... 33

4.3 Input/output connections ............................................................................................... 35

5 Maintenance and service 37

5.1 Maintenance ................................................................................................................... 37

5.2 Before and after opening................................................................................................ 37

5.3 Replacement of mains fuse............................................................................................ 38

6 Notes 39

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1 INTRODUCTION

1.1 Safety instructions from the manufacturer

1.1.1 Disclaimer

The manufacturer will not be liable for any damage of any kind by using its product, including,
but not limited to direct, indirect, incidental, punitive and consequential damages.

This disclaimer does not apply in case the manufacturer has acted on purpose or with gross
negligence. In the event any applicable law does not allow such limitations on implied warranties
or the exclusion of limitation of certain damages, you may, if such law applies to you, not be
subject to some or all of the above disclaimer, exclusions or limitations.

Any product purchased from the manufacturer is warranted in accordance with the relevant
product documentation and our Terms and Conditions of Sale.

The manufacturer reserves the right to alter the content of its documents, including this
disclaimer in any way, at any time, for any reason, without prior notification, and will not be liable
in any way for possible consequences of such changes.

OPTIFLUX

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OPTIFLUX

1.1.2 Product liability and warranty

The operator shall bear responsibility for the suitability of the device for the specific purpose.
The manufacturer accepts no liability for the consequences of misuse by the operator. Improper
installation and operation of the devices (systems) will cause the warranty to be void. The
respective "Standard Terms and Conditions" which form the basis for the sales contract shall
also apply.

1.1.3 Information concerning the documentation

To prevent any injury to the user or damage to the device it is essential that you read the
information in this document and observe applicable national standards, safety requirements
and accident prevention regulations.

If this document is not in your native language and if you have any problems understanding the
text, we advise you to contact your local office for assistance. The manufacturer can not accept
responsibility for any damage or injury caused by misunderstanding of the information in this
document.

This document is provided to help you establish operating conditions, which will permit safe and
efficient use of this device. Special considerations and precautions are also described in the
document, which appear in the form of underneath icons.

INTRODUCTION 1

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1 INTRODUCTION

1.1.4 Warnings and symbols used

Safety warnings are indicated by the following symbols.

DANGER!

This information refers to the immediate danger when working with electricity.

DANGER!

This warning refers to the immediate danger of burns caused by heat or hot surfaces.

DANGER!

This warning refers to the immediate danger when using this device in a hazardous atmosphere.

DANGER!

These warnings must be observed without fail. Even partial disregard of this warning can lead to
serious health problems and even death. There is also the risk of seriously damaging the device
or parts of the operator's plant.

OPTIFLUX

WARNING!

Disregarding this safety warning, even if only in part, poses the risk of serious health problems.
There is also the risk of damaging the device or parts of the operator's plant.

CAUTION!

Disregarding these instructions can result in damage to the device or to parts of the operator's
plant.

INFORMATION!

These instructions contain important information for the handling of the device.

LEGAL NOTICE!

This note contains information on statutory directives and standards.

• HANDLING

HANDLING

HANDLINGHANDLING

This symbol designates all instructions for actions to be carried out by the operator in the
specified sequence.

i RESULT

RESULT

RESULTRESULT
This symbol refers to all important consequences of the previous actions.

1.1.5 Manufacturer

This instrument is developed and manufactured by:

KROHNE Altometer
Kerkeplaat 12
3313 LC Dordrecht
The Netherlands

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OPTIFLUX

For information, maintenance or service please contact your nearest local KROHNE
representative.

1.2 Safety instructions for the operator

WARNING!

•

Do not change the device. Unauthorized changes affect the explosion safety of the devices.

•

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 to HD 384 or IEC 60364, e.g. VDE 0100),
especially the regulations in EN 60079-14 "Electrical installations in hazardous locations",
equivalent national standard (e.g. DIN VDE 0165 Part 1) or dust hazardous areas such as EN
61241-14 must be complied with!

•

Installation, establishment, utilization and maintenance are only allowed to be executed by
personnel with an education in explosion safety!

These additional instructions are an extension to the handbook. All technical information as
described in the handbook is applicable, when not specifically excluded, completed or replaced
by the instructions in these additional instructions.

INTRODUCTION 1

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1 INTRODUCTION

1.3 Approvals

The flowmeter system consists of a flow sensor and a signal converter. The approval numbers
are:

compact versions:

• OPTIFLUX 2300 C (= OPTIFLUX 2000 + IFC 300):
KEMA 04 ATEX 2077 X

• OPTIFLUX 4300 C (= OPTIFLUX 4000 + IFC 300):
KEMA 04 ATEX 2077 X

• OPTIFLUX 5300 C (= OPTIFLUX 5000 + IFC 300):
KEMA 04 ATEX 2127 X

• OPTIFLUX 6300 C (= OPTIFLUX 6000 + IFC 300):
KEMA 05 ATEX 2214 X

• OPTIFLUX 7300 SW/C and FL/C (= OPTIFLUX 7000 + IFC 300):
KEMA 10 ATEX 0105 X

field versions:

• OPTIFLUX 2000 F + IFC 300 F:
KEMA 04 ATEX 2125 X + KEMA 04 ATEX 2166

• OPTIFLUX 4000 F + IFC 300 F:
KEMA 04 ATEX 2125 X + KEMA 04 ATEX 2166

• OPTIFLUX 5000 F + IFC 300 F:
KEMA 04 ATEX 2126 X + KEMA 04 ATEX 2166

• OPTIFLUX 6000 F + IFC 300 F:
KEMA 07 ATEX 0020 X + KEMA 04 ATEX 2166

OPTIFLUX

INFORMATION!

All type examination certificates can be downloaded from the website.

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OPTIFLUX

1.4 OPTIFLUX 2000 / 4000

1.4.1 Compact versions

OPTIFLUX 2300 C / 4300 C is certified as a group II, category 2 GD equipment, if fitted with an IFC
300 signal converter without Ex ia signal in/outputs or as a group II, category 2 (1) GD equipment,
if fitted with a signal converter with Ex ia signal in/outputs.
It is therefore suitable for installation in gas hazardous areas zone 1 or 2, gas group IIC,
temperature class T6 (or T5)...T3 and dust hazardous areas zone 21 or zone 22, surface

temperature T85...150°C. Additionally, the Ex ia signal inputs/outputs of the signal converter

may run or originate from a Zone 0 Gas hazardous area.

Converter housing, connection compartment:

Converter housing, connection compartment: with power supply (terminals L, N / L+, L-) and I/O

Converter housing, connection compartment: Converter housing, connection compartment:
connections (terminals A, A+, A-, B, B-, C, C-, D and D-):
Ex e (Increased safety), optionally: Ex d (Flameproof Enclosure). For certain versions of the
signal converter the terminals A, A+, A-, B, B-, C, C-, D and D- are additionally Ex ia (Intrinsic
safety). Consult the table with the CG numbers for more details.
Converter housing, electronics compartment:

Converter housing, electronics compartment: Ex d (Flameproof enclosure).

Converter housing, electronics compartment:Converter housing, electronics compartment:

EEx marking OPTIFLUX 2300 C / 4300 C:

INTRODUCTION 1

Nominal

Nominal

Nominal Nominal
diameter

diameter

diameterdiameter

2.5...15 ("me")

10...20 ("me")

25...150 ("d") EEx de [ia] IIC T6...T3 T85...150°C EEx d [ia] IIC T6...T3 T85...150°C

200...300 ("qe") EEx dqe [ia] IIC T6...T3 T85...150°C EEx dqe [ia] IIC T6...T3 T85...150°C

350...3000 ("e") EEx de [ia] IIC T6...T3 T85...150°C EEx de [ia] IIC T6...T3 T85...150°C

Optional:

Optional:

Optional:Optional:

25...150 ("qe") EEx dqe [ia] IIC T5...T3 T85...150°C EEx dqe [ia] IIC T5...T3 T85...150°C

EEx e connection compartment,

EEx e connection compartment,

EEx e connection compartment,EEx e connection compartment,
II 2 GD or II 2(1) GD

EEx dme [ia] IIC T6...T3 T85...150°C EEx dme [ia] IIC T6...T3 T85...150°C

EEx d connection compartment,

EEx d connection compartment,

EEx d connection compartment,EEx d connection compartment,
II 2 GD or II 2(1) GD

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1 INTRODUCTION

1.4.2 Field versions

OPTIFLUX 2000 F / 4000 F is certified as group II, category 2 GD equipment for gas hazardous
areas zone 1 and 2, gas group IIC, temperature classes T6 (or T5) ... T3 and dust hazardous areas

zone 21 and 22, surface temperature T85…150/160/180°C.

The connection box contains terminals for the connection of the field current and electrode
circuits:
Field current circuit

Field current circuit, in type of protection "Increased safety" (Ex e), terminals 7, 8 and 9:

Field current circuitField current circuit
U < 40 V (switched DC voltage, alternately +40 and -40 V), I = 125 mA (injected square wave
current),
Electrode terminals

Electrode terminals, in type of protection "Intrinsic safety" (Ex ia), terminals 1, 2, 3 and 4:

Electrode terminalsElectrode terminals

= 20 V, Ii = 175 mA, Ci ≈ 0 nF, Li ≈ 0 mH.

U

i

The before mentioned intrinsically safe circuits shall, from the safety point of view, be
considered to be connected to ground.
The cable gland

cable gland for the electrode circuit is - as intrinsic safe circuit - marked with a blue O-ring.

cable glandcable gland

EEx marking OPTIFLUX 2000 F / 4000 F:

Nominal diameter

Nominal diameter II 2 GD

Nominal diameterNominal diameter

10...20 ("me") EEx me ia IIC T6...T3 T85...150°C

25...150 ("d") EEx de ia IIC T6...T3 T85...180°C

200...300 ("qe") EEx qe ia IIC T6...T3 T85...150°C

350...3000 ("e") EEx e ia IIC T6...T3 T85...160°C

Optional:

Optional:

Optional:Optional:

25...150 ("qe") EEx qe ia IIC T5...T3 T85...180°C

OPTIFLUX

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OPTIFLUX

1.5 OPTIFLUX 5000

1.5.1 Compact versions

OPTIFLUX 5300 C is certified as group II, category 2 GD equipment if fitted with an IFC 300 signal
converter without Ex ia signal in/outputs or as a group II, category 2 (1) GD equipment, if fitted
with a signal converter with Ex ia signal in/outputs. It is therefore suitable for installation in gas

hazardous areas zone 1 and 2, gas group IIC, temperature class T6…T3 and dust hazardous
areas zone 21 or zone 22, surface temperature T85...180°C. Additionally, the Ex ia signal

in/outputs of the signal converter may run or originate from a Zone 0 gas hazardous area.
The sensor is available in "sandwich" and in "flange" version.

Converter housing, connection compartment:

Converter housing, connection compartment:

Converter housing, connection compartment:Converter housing, connection compartment:
with power supply (terminals L, N / L+, L-) and I/O connections (terminals A, A+, A-, B, B-, C, C-,
D and D-): Ex e (increased safety), optionally: Ex d (Flameproof enclosure). For certain versions
of the signal converter the terminals A, A+, A-, B, B-, C, C-, D and D- are additionally Ex ia
(Intrinsic safety). Consult the table with CG numbers for details.
Converter housing, electronics compartment:

Converter housing, electronics compartment:

Converter housing, electronics compartment:Converter housing, electronics compartment:
Ex d (Flameproof enclosure).

INTRODUCTION 1

EEx marking OPTIFLUX 5300 C "sandwich":

Nominal diameter

Nominal diameter EEx e connection compartment,

Nominal diameterNominal diameter

2.5...15 EEx dme [ia] IIC T6...T3 T85...150°C EEx dme [ia] IIC T6...T3 T85...150°C

25...100 EEx de [ia] IIC T6...T3 T85...150°C EEx d [ia] IIC T6...T3 T85...150°C

EEx e connection compartment,

EEx e connection compartment,EEx e connection compartment,
II 2 GD or II 2(1) GD

EEx d connection compartment,

EEx d connection compartment,

EEx d connection compartment,EEx d connection compartment,
II 2 GD or II 2(1) GD

EEx marking OPTIFLUX 5300 C "flange":

Nominal diameter

Nominal diameter EEx e or EEx d connection compartment,

Nominal diameterNominal diameter

15...100 EEx d e [ia] mb IIC T6...T3 T85...150°C

EEx e or EEx d connection compartment,

EEx e or EEx d connection compartment,EEx e or EEx d connection compartment,
II 2 GD or II 2(1) GD

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1 INTRODUCTION

1.5.2 Field versions

OPTIFLUX 5000 F is certified as group II, category 2 GD equipment for gas hazardous areas zone

1 and 2, gas group IIC, temperature classes T6…T3 and dust hazardous areas zone 21 and 22,
surface temperature T85...180°C.

The connection box contains terminals for the connection of the field current and electrode
circuits:
Field current terminals

Field current terminals, in type of protection "Increased safety" (Ex e), terminals 7, 8 and 9:

Field current terminalsField current terminals
U < 40 V (switched DC voltage, alternately +40 and -40 V), I = 125 mA (injected square wave
current).
Electrode terminals

Electrode terminals, in type of protection "Intrinsic safety" (Ex ia), terminals 1, 2, 3 and 4:

Electrode terminalsElectrode terminals

= 20 V, Ii = 175 mA, Ci ≈ 0 nF, Li ≈ 0 mH.

U

i

The before mentioned intrinsically safe circuits shall, from the safety point of view, be
considered to be connected to ground.
The cable gland for the electrode circuit is - as intrinsic safe circuit - marked with a blue O-ring.

EEx marking OPTIFLUX 5000 F "sandwich":

Nominal diameter

Nominal diameter II 2 GD

Nominal diameterNominal diameter

OPTIFLUX

2.5...15 EEx me ia IIC T6...T3 T85...180°C

25...100 EEx de ia IIC T6...T3 T85...180°C

EEx marking OPTIFLUX 5000 F "flange":

Nominal diameter

Nominal diameter II 2 GD

Nominal diameterNominal diameter

15...100 EEx e ia mb IIC T6...T3 T85...180°C

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OPTIFLUX

1.6 OPTIFLUX 6000

1.6.1 Compact versions

OPTIFLUX 6300 C is certified as group II, category 2 GD equipment, if fitted with an IFC 300 signal
converter without Ex ia signal in/outputs or as a group II, category 2 (1) GD equipment, if fitted
with a signal converter with Ex ia signal in/outputs. It is therefore suitable for installation in gas

hazardous areas zone 1 and 2, gas group IIC, temperature classes T6…T3 and dust hazardous
areas zone 21 and 22, surface temperature T150°C. Additionally, the Ex ia signal in/outputs of the

signal converter may run or originate from a Zone 0 gas hazardous area.

Converter housing, connection compartment:

Converter housing, connection compartment: with power supply (terminals L, N / L+, L-) and I/O

Converter housing, connection compartment:Converter housing, connection compartment:
connections (terminals A, A+, A-, B, B-, C, C-, D and D-):
Ex e (Increased safety), optionally: EEx d (Flameproof Enclosure).
For certain versions of the signal converter, the terminals A, A+, A-, B, B-, C, C-, D and D- are
additionally Ex ia (Intrinsic safety). Consult the tables with CG numbers for details.
Converter housing, electronics compartment:

Converter housing, electronics compartment: Ex d (Flameproof Enclosure)

Converter housing, electronics compartment:Converter housing, electronics compartment:

EEx marking OPTIFLUX 6300 C:

INTRODUCTION 1

Nominal diameter

Nominal diameter EEx e connection compartment,

Nominal diameterNominal diameter

2.5...15

25...80

EEx e connection compartment,

EEx e connection compartment,EEx e connection compartment,
II 2 GD or II 2 (1) GD

EEx d mb e [ia] IIC T6...T3 T150°C

EEx d connection compartment,

EEx d connection compartment,

EEx d connection compartment,EEx d connection compartment,
II 2 GD or II 2 (1) GD

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1 INTRODUCTION

1.6.2 Field versions

OPTIFLUX 6000 F is certified as group II, category 2 GD equipment for gas hazardous areas zone

1 and 2, gas group IIC, temperature classes T6…T3 and dust hazardous areas zone 21 and 22,
surface temperature T180°C.

The connection box contains terminals for the connection of the field current and electrode
circuits:
Field current circuit

Field current circuit, in type of protection "Increased safety" (Ex e), terminals 7, 8 and 9:

Field current circuitField current circuit
U < 50 V (switched DC voltage, alternately +40 and -40 V), I = 125 mA (injected square wave
current),
Electrode circuit

Electrode circuit, in type of protection "Intrinsic safety" (Ex ia), terminals 1, 2, 3 and 4:

Electrode circuitElectrode circuit

= 20 V , Ii = 175 mA, Ci ≈ 0 nF, Li ≈ 0 mH.

U

i

The before mentioned intrinsically safe circuits shall, from the safety point of view, be
considered to be connected to ground.
The cable gland for the electrode circuit is - as intrinsic safe circuit - marked with a blue O-ring.

Ex marking OPTIFLUX 6000 F:

Nominal diameter

Nominal diameter II 2 GD

Nominal diameterNominal diameter

OPTIFLUX

25...80 Ex e ia mb IIC T6...T3 T180°C

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OPTIFLUX

1.7 OPTIFLUX 7000

1.7.1 Compact versions

OPTIFLUX 7300 SW/C or FL/C is certified as group II, category 2 G equipment if fitted with an
IFC 300 signal converter without Ex ia signal in/outputs or as group II, category 2 (1) G Equipment
if fitted with an IFC 300 signal converter with Ex ia signal in/outputs. It is therefore suitable for
installation in gas hazardous areas zone 1 and 2, gasgroup IIC, temperature class T6...T4.
OPTIFLUX 7300 SW/C or FL/C is also certified as group II, category 2 D equipment and is
therefore suitable for installation in dust hazardous areas zone 21 and 22, maximum surface

temperature T115°C.

Converter housing, connection compartment:

Converter housing, connection compartment: With power supply (terminals L, N / L+, L-) and I/O

Converter housing, connection compartment:Converter housing, connection compartment:
connections (terminals A, A-, A+, B, B-, C, C-, D, D-):
Ex e (Increased safety), optionally Ex d (Flameproof enclosure).
For certain versions of the signal converter, the terminals A, A-, A+, B, B-, C, C-, D, D- are
additionally Ex ia (Intrinsic safety).
Converter housing, electronics compartment:

Converter housing, electronics compartment: Ex d (Flameproof enclosure)

Converter housing, electronics compartment:Converter housing, electronics compartment:

Ex marking OPTIFLUX 7300 SW/C:

INTRODUCTION 1

Nominal diameter Ex e connection compartment Ex d connection compartment

25...100 II 2 G Ex d e IIC T6...T4 II 2 G Ex d IIC T6...T4

II 2(1) G Ex d e [ia] IIC T6...T4 II 2(1) G Ex d [ia] IIC T6...T4
II 2 D Ex tD A21 IP67 T115°C II 2 D Ex tD A21 IP67 T115°C

Ex marking OPTIFLUX 7300 FL/C:

Nominal diameter Ex e connection compartment Ex d connection compartment

25...100 II 2 G Ex d e mb IIC T6...T4 II 2 G Ex d mb IIC T6...T4

II 2(1) G Ex d e mb [ia] IIC T6...T4 II 2(1) G Ex d mb [ia] IIC T6...T4
II 2 D Ex tD A21 IP67 T115°C II 2 D Ex tD A21 IP67 T115°C

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1 INTRODUCTION

1.8 IFC 300 F

The IFC 300 F is certified as a group II, category 2 GD equipment, if fitted without Ex ia signal
in/outputs or as a group II, category 2 (1) GD equipment, if fitted with Ex ia signal inputs/outputs.
It is therefore suitable for installation in gas hazardous areas zone 1 or 2, gas group IIC,

temperature class T6 and dust hazardous areas zone 21 or 22, surface temperature T85°C.

Additionally, The Ex ia signal in/outputs of the converter may run or originate from a zone 0 gas
hazardous area.
In the IFC 300 F signal converter the following types of protections are used:
Converter housing, connection compartment:

Converter housing, connection compartment: with power supply (terminals L, N / L+, L-) and I/O

Converter housing, connection compartment:Converter housing, connection compartment:
connections (terminals A, A+, A-, B, B-, C, C-, D and D- ): Ex e (Increased safety). Optionally
compact flowmeters have Ex d (Flameproof Enclosure). For certain versions of the signal
converter the terminals A, A+, A-, B, B-, C, C-, D and D- are additionally Ex ia (Intrinsic safety).
Consult the table with CG numbers for details.
Converter housing, electronics compartment:

Converter housing, electronics compartment: Ex d (Flameproof enclosure)

Converter housing, electronics compartment:Converter housing, electronics compartment:
Field current circuit

Field current circuit, in type of protection "Increased safety" (Ex e), terminals 7,8 and 9:

Field current circuitField current circuit
U < 40 V (switched DC voltage, alternately +40 and -40 V), I = 125 mA (injected square wave
current). The field current source is protected by 2 TR5 fuses, rated value 160 mA. The maximum
prospective short circuit current is restricted to 35 A.
Electrode terminals

Electrode terminals, in type of protection "Intrinsic safety" (Ex ia), terminals 1, 2, 20, 3, 30, 4 and

Electrode terminalsElectrode terminals
40:

= 14 V , Io = 70 mA, Po = 300 mW (lineair), Co = 430 nF, Lo = 2 mH.

U

o

The Ex marking is II 2 GD EEx de [ia] IIC T6 T85°C for converters with non Ex ia signal in/outputs
or II 2 (1) GD EEx de [ia] IIC T6 T85°C for converters with Ex ia signal in/outputs.

OPTIFLUX

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OPTIFLUX

1.9 Marking labels

The data sticker on the connection box of the separate flow sensor typically contains the
following information.

INTRODUCTION 1

1

7

Figure 1-1: Data sticker on sensor

1 Name and address of the manufacturer
2 CE sign with number(s) of notified body / bodies
3 Specific sign for explosion protection
4 Number of EC type examination certificate
5 General EEx notes and warnings
6 Specific EEx notes and warnings
7 Type designation of the flowmeter

23 4

5

6

The data sticker on the converter typically contains the following information.

OPTIFLUX 4300 C

Figure 1-2: Example of a nameplate for compact version

1 Name and address of the manufacturer
2 CE Sign with number(s) of notified body / bodies
3 Specific sign for explosion protection
4 Number of EC type examination certificate
5 General EEx notes and warnings
6 Specific EEx notes and warnings
7 Power supply data
8 Type designation of the flowmeter

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2 TEMPERATURE LIMITS

The temperature limits apply under the following conditions:

• The instrument is installed and operated in accordance with the installation directions given
in the installation and operating instructions.

• The instrument is not heated up by any additional heat radiation (direct solar radiation, heat
from adjacent plant parts) so causing it to operate above the permissible ambient
temperature range.

• Insulation is not hindering free ventilation of the signal converter housing.

2.1 OPTIFLUX 2000 / 4000

2.1.1 Compact versions

• The OPTIFLUX 2300 C / 4300 C is suitable for an ambient temperature range of

-40…+60°C.

• For dust hazardous areas, the maximum surface temperature is equal to the process

temperature with a minimum of 85°C.

• The minimum process temperature for all DN sizes is -40°C.

• The maximum process temperature is determined by the temperature class T6/T5...T3 of the

gas hazardous area of concern, the maximum ambient temperature (T
diameter. The temperature range is often limited further by the liner type used (refer to the

Quick Start).

OPTIFLUX

), and the nominal

a

DN2.5...15 ("me")

Temperature class Max. process temperature Tp [°C]

T

≤ 40°C 40 < Ta ≤ 50°C 50 < Ta ≤ 60°C

a

T6 70 70 60

T5 85 85 60

T4 120 120 60

T3 150 140 60

DN10...20 ("me")

Temperature class Max. process temperature Tp [°C]

T

≤ 40°C 40 < Ta ≤ 50°C 50 < Ta ≤ 60°C

a

T6 70 60 -

T5 95 85 60

T4 130 130 60

T3 150 150 1 60

1 140°C for versions with stainless steel converter housing

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OPTIFLUX

TEMPERATURE LIMITS 2

DN25...150 ("d")

Temperature class Max. process temperature Tp [°C]

T

≤ 40°C 40 < Ta ≤ 50°C 50 < Ta ≤ 60°C

a

T6 80 80 80 1

T5 95 95 80 1

T4 130 130 80 1

T3 150 150 2 80 1

1 60°C for versions with stainless steel converter housing
2 140°C for versions with stainless steel converter housing

DN25...150 ("qe")

Temperature class Max. process temperature Tp [°C]

T

≤ 40°C 40 < Ta ≤ 50°C 50 < Ta ≤ 60°C

a

T5 50 - -

T4 100 95 80 1

T3 150 150 2 80 1

1 60°C for versions with stainless steel converter housing
2 140°C for versions with stainless steel converter housing

DN200...300 ("qe") and DN350...3000 ("e")

Temperature class Max. process temperature Tp [°C]

T

≤ 40°C 40 < Ta ≤ 50°C 50 < Ta ≤ 60°C

a

T6 80 80 75 1

T5 95 95 80 1

T4 130 130 80 1

T3 150 150 2 80 1

T3 3 130 130 80 1

1 60°C for versions with stainless steel converter housing
2 140°C for versions with stainless steel converter housing
3 For some versions the process temperature is restricted to 130°C. This version is identified by extra text (/RT) on the

data sticker

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2 TEMPERATURE LIMITS

2.1.2 Field versions

• In general the OPTIFLUX 2000 F / 4000 F flow sensors are suitable for an ambient

temperature range of -40...+60°C.

• For dust hazardous areas the maximum surface temperature is equal to the process
temperature T

• The minimum process temperature is -40°C.

• The maximum process temperature Tp is dependent on the required temperature class

T6/T5...T3, the diameter and the maximum ambient temperature T
is often limited further by the liner type used (refer to the Quick Start).

DN10...20 ("me")

Temperature class Max. process temperature Tp [°C]

T6 75 70 70

T5 95 90 75

T4 130 115 75

T3 150 115 75

with a minimum of 85°C.

p

T

≤ 40°C 40 < Ta ≤ 50°C 50 < Ta ≤ 60°C

a

OPTIFLUX

. The temperature range

a

DN25...150 ("d")

Temperature class Max. process temperature Tp [°C]

T

≤ 40°C 40 < Ta ≤ 50°C 50 < Ta ≤ 60°C

a

T6 70 70 70

T5 85 85 85

T4 120 120 120

T3 180 180 180

Use heat resistant
cables for Tp above: 1

1 Cables must withstand a continuous operating temperature of 85°C.

Not needed 155 105

DN200...300 ("qe")

Temperature class Max. process temperature Tp [°C]

T

≤ 40°C 40 < Ta ≤ 50°C 50 < Ta ≤ 60°C

a

T6 75 70 70

T5 95 90 75

T4 130 115 75

T3 150 115 75

20

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OPTIFLUX

TEMPERATURE LIMITS 2

DN350...3000 ("e")

Temperature class Max. process temperature Tp [°C]

T

≤ 40°C 40 < Ta ≤ 50°C 50 < Ta ≤ 60°C

a

T6 60 60 60

T5 80 75 75

T4 115 115 115

T3 1 160 150 140

Use heat resistant
cables for Tp above: 2

1 For some versions the process temperature for T3 is restricted to 130°C. This version is identified by extra text (/RT)

on the data sticker.

2 Cables must withstand a continuous operating temperature of 85°C.

DN25...150 ("qe")

Temperature class Max. process temperature Tp [°C]

T5 60 55 -

T4 110 105 100

T3 180 180 180

Use heat resistant
cables for Tp above: 1

1 Cables must withstand a continuous operating temperature of 85°C.

Not needed 145 110

T

≤ 40°C 40 < Ta ≤ 50°C 50 < Ta ≤ 60°C

a

Not needed 155 105

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2 TEMPERATURE LIMITS

2.2 OPTIFLUX 5000

The maximum process temperature Tp is dependent on the required temperature class T6...T3
and the maximum ambient temperature T

2.2.1 Compact versions

Sandwich versions

Sandwich versions

Sandwich versionsSandwich versions

• For dust hazardous areas, the maximum surface temperature is equal to the process

temperature with a minimum of 85 °C.

• The OPTIFLUX 5300 C "sandwich" is suitable for an ambient temperature range of

-20...60°C (DN2.5...15) or -40...+60°C (DN25...100).

• The minimum process temperature is -20°C (DN2.5...15) or -40°C (DN25...100).

Temperature class Max. process temperature Tp [°C]

T

≤ 40°C 40 < Ta ≤ 50°C 50 < Ta ≤ 60°C

a

T6 60 55 -

T5 75 75 70

T4 115 115 75

T3 150 135 75

OPTIFLUX

.

a

Flange versions

Flange versions

Flange versionsFlange versions

• The OPTIFLUX 5300 C "flange" is suitable for an ambient temperature range of

-40...+60°C.

• The minimum process temperature is -40°C.

Temperature
class

T6 85 80 80 60

T5 100 95 95 60

T4 135 135 130 60

T3 150 150 145 60

Max. surface
temperature for

dust [°C]

Max. process temperature Tp [°C]

T

≤ 40°C 40 < Ta ≤ 50°C 50 < Ta ≤ 60°C

a

22

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OPTIFLUX

2.2.2 Field versions

Sandwich versions

• The OPTIFLUX 5000 F is suitable for an ambient temperature range of

-20...65°C (DN2.5...15) or -40...+65°C (DN25...100).

• The minimum process temperature is -20°C (DN2.5...15) or -40°C (DN25...100).

TEMPERATURE LIMITS 2

Temperature
class (for gasses)

T6 85 65 65 60

T5 95 85 85 75

T4 130 125 125 115

T3 180 180 165 140

Use heat
resistance cable
for Tp above: 1

1 Cables must withstand a continuous operating temperature of 85°C.

Maximum surface
temperature for

dust [°C]

Max. process temperature Tp [°C]

T

≤ 40°C 40 < Ta ≤ 50°C 50 < Ta ≤ 65°C

a

165 130 100

Flange versions

• The OPTIFLUX 5000 F is suitable for an ambient temperature range of -40...65°C (DN15...100).

• The minimum process temperature is -40°C.

Temperature
class (for gasses)

T6 85 80 80 75

T5 95 95 95 95

T4 130 130 130 130

T3 180 180 180 145

Use heat
resistance cable
for Tp above: 1

1 Cables must withstand a continuous operating temperature of 85°C.

Maximum surface
temperature for

dust [°C]

Max. process temperature Tp [°C]

T

≤ 40°C 40 < Ta ≤ 50°C 50 < Ta ≤ 65°C

a

never 165 90

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2 TEMPERATURE LIMITS

2.3 OPTIFLUX 6000

2.3.1 Compact versions

• The OPTIFLUX 6300 C is suitable for an ambient temperature range of -40...+60°C.

• The minimum process temperature is -40°C.

• For dust hazardous areas the maximum surface temperature is 150°C at an ambient

temperature T

• The maximum process temperature T
and the maximum ambient temperature T

DN2.5...15

Temperature class Max. process temperature Tp [°C]

T6 70 70 60

T5 85 85 60

T4 120 120 60

T3 150 140 60

≤ 60°C.

a

T

≤ 40°C 40 < Ta ≤ 50°C 50 < Ta ≤ 60°C

a

OPTIFLUX

depends on the required temperature class T6...T3

p

.

a

DN25...80

Temperature class Max. process temperature Tp [°C]

T

≤ 40°C 40 < Ta ≤ 50°C 50 < Ta ≤ 60°C

a

T6 75 70 65

T5 95 95 85

T4 130 130 85

T3 150 150 85

24

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OPTIFLUX

2.3.2 Field versions

• The OPTIFLUX 6000 F is suitable for an ambient temperature range of -40...+60°C

(DN25...80).

• For dust hazardous areas the maximum surface temperature is 180°C at an ambient

temperature T

• The minimum process temperature is -40°C.

• The maximum process temperature T

and the maximum ambient temperature T

Temperature class Max. process temperature Tp [°C]

T6 75 70 65

T5 95 90 85

T4 130 130 130

T3 180 180 170

Use heat resistant
cables for Tp above: 1

1 Cables must withstand a continuous operating temperature of 85°C.

≤ 60°C.

a

TEMPERATURE LIMITS 2

depends on the required temperature class T6...T3

p

.

a

T

≤ 40°C 40 < Ta ≤ 50°C 50 < Ta ≤ 60°C

a

Not needed 150 110

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2 TEMPERATURE LIMITS

2.4 OPTIFLUX 7000

2.4.1 Compact versions

OPTIFLUX 7300 SW/C

• The OPTIFLUX 7300 SW/C is suitable for an ambient temperature T

• The minimum process temperature T

• For dust hazardous areas the maximum surface temperature is 115°C.

is -20°C.

p

OPTIFLUX

range of -20...+60°C.

a

Temperature
class

T6 60 55 Not allowed

T5 75 75 70

T4 115 115 75

OPTIFLUX 7300 FL/C

• The OPTIFLUX 7300 FL/C is suitable for an ambient temperature (T

• The minimum process temperature T

• For dust hazardous areas the maximum surface temperature is 115°C.

Temperature
class

T6 80 80 60

T5 95 95 60

T4 115 115 60

2.5 IFC 300 F

Max. process temperature T

T

≤ 40° C 40 < Ta ≤ 50° 50 < Ta ≤ 60°

a

is -20°C.

p

Max. process temperature T

T

≤ 40° C 40 < Ta ≤ 50° 50 < Ta ≤ 60°

a

[°C]

p

[°C]

p

) range of -20...+60°C.

a

26

The signal converter IFC 300 F is suitable for an ambient temperature range of -40...+65°C.

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OPTIFLUX

In the case of field versions, the electrical connection between the sensor and the signal
converter is established via a signal cable and a field current cable.
The field current cable

field current cable is no part of the supply and must be supplied by the user. It must be

field current cablefield current cable
according EN 60079-14 clause 9.3 and 11.3 (Increased safety).
The signal cable

signal cable is part of the supply.

signal cablesignal cable

3.1 Signal cable A

The signal cable A is a double screen shielding cable, according to EN 60079-14 clause 12.2
(Intrinsic safety).

CONNECTION DIAGRAMS FOR FIELD VERSIONS 3

Figure 3-1: Construction of signal cable A

1 Stranded drain wire (1) for the inner shield (10), 1.0 mm
2 Insulated wire (2), 0.5 mm
3 Insulated wire (3), 0.5 mm

4 Outer sheath
5 Insulation layers
6 Stranded drain wire (6) for the outer shield (60)

2

Cu / AWG 20

2

Cu / AWG 20

2

Cu / AWG 17 (not insulated, bare)

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3 CONNECTION DIAGRAMS FOR FIELD VERSIONS

3.2 Signal cable B

The signal cable B is a triple screen shielding cable, according to EN 60079-14 clause 12.2
(Intrinsic safety).

Figure 3-2: Construction of signal cable B

1 Stranded drain wire for the inner shield (10), 1.0 mm
2 Insulated wire (2), 0.5 mm
3 Insulated wire (3), 0.5 mm

4 Outer sheath
5 Insulation layers

6 Stranded drain wire (6) for the outer shield (60), 0.5 mm

2

Cu / AWG 20 with stranded drain wire (20) of shield

2

Cu / AWG 20 with stranded drain wire (30) of shield

2

Cu / AWG 17 (not insulated, bare)

2

Cu / AWG 20 (not insulated, bare)

OPTIFLUX

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OPTIFLUX

CONNECTION DIAGRAMS FOR FIELD VERSIONS 3

3.3 Equipotential bonding

• As the Ex ia electrode circuits of the flow sensors are effectively grounded through the

conductive liquid in the measuring tube, an equipotential bonding system must exist over the
whole area in which the electrode circuits, including their wiring, are installed, conform EN
60 079-14 clause 12.2.4.

• The flowmeters OPTIFLUX 2000, 4000, 5000 and 6000, the electrode cable and the IFC 300 F

signal converter must all be included in the equipotential bonding system of the hazardous
area. If a single separate conductor is used for equipotential bonding, than this conductor

must have a cross section of at least 4 mm

• The separate equipotential bonding conductor between flowmeter and converter can be left

out, if by other means (e.g. over bonding conductors over the metal piping system) a high
level of assurance that potential equalization exists between flowmeter and converter is
reached.

2

copper.

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3 CONNECTION DIAGRAMS FOR FIELD VERSIONS

3.4 Signal cable connections

Figure 3-3: Connecting with signal cable A

1 Equipotential bonding, conductor ≥ 4 mm
2 Field current cable acc. EN 60079-14 clause 9.3 and 11.3 (Increased safety), do not connect the screen if available.
3 Signal cable A acc. EN 60079-14 clause 12.2 (Intrinsic safety)

2

OPTIFLUX

CAUTION!

* Outer screen connected via strain reliefs.

Figure 3-4: Connecting with signal cable B

1 Equipotential bonding, conductor ≥ 4 mm
2 Field current cable acc. EN 60079-14 clause 9.3 and 11.3 (Increased safety), do not connect the screen if available.
3 Signal cable B acc. EN 60079-14 clause 12.2 (Intrinsic safety)

2

30

CAUTION!

* Outer screen connected via strain reliefs.

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OPTIFLUX

4.1 Installation instructions

For IFC 300 F, OPTIFLUX 2000 F / 4000 F / 5000 F, OPTIFLUX 2300 C / 4300 C / 5300 C / 6300 C /

For IFC 300 F, OPTIFLUX 2000 F / 4000 F / 5000 F, OPTIFLUX 2300 C / 4300 C / 5300 C / 6300 C /

For IFC 300 F, OPTIFLUX 2000 F / 4000 F / 5000 F, OPTIFLUX 2300 C / 4300 C / 5300 C / 6300 C / For IFC 300 F, OPTIFLUX 2000 F / 4000 F / 5000 F, OPTIFLUX 2300 C / 4300 C / 5300 C / 6300 C /
7300 SW/C / 7300 FL/C:

7300 SW/C / 7300 FL/C:

7300 SW/C / 7300 FL/C:7300 SW/C / 7300 FL/C:
When used in a potentially explosive atmosphere, requiring the use of apparatus of equipment
category 2G, certified cable entry devices must be used that are suitable for the application and
correctly installed.
When used in a potentially explosive atmosphere, requiring the use of apparatus of equipment
category 2D, certified cable entry devices with a degree of ingress protection of at least IP6x
according to EN 60 529 must be used that are suitable for the application and correctly installed.
Unused openings must be closed with suitable certified closing elements.
With the use of conduits, a suitable certified sealing device such as a stopping box with setting
compound must be provided immediately at the entrance to the flameproof enclosure.

For IFC 300 F, OPTIFLUX 2300 C / 4300 C / 5300 C / 6300 C / 7300 SW/C / 7300 FL/C:

For IFC 300 F, OPTIFLUX 2300 C / 4300 C / 5300 C / 6300 C / 7300 SW/C / 7300 FL/C:

For IFC 300 F, OPTIFLUX 2300 C / 4300 C / 5300 C / 6300 C / 7300 SW/C / 7300 FL/C:For IFC 300 F, OPTIFLUX 2300 C / 4300 C / 5300 C / 6300 C / 7300 SW/C / 7300 FL/C:
To avoid voltage and current addition, the intrinsically safe circuits must be separated and wired
to EN 60 079-14.

For OPTIFLUX 6000 F:

For OPTIFLUX 6000 F:

For OPTIFLUX 6000 F:For OPTIFLUX 6000 F:
The cable glands and blanking elements must be in type of protection increased safety "e",
suitable for the conditions of use and correctly installed. The devices must provide a degree of
protection of at least IP64 according to EN 60 529.

ELECTRICAL CONNECTIONS 4

Additionally for OPTIFLUX 2000 F / 4000 F / 5000 F / 6000 F / 7300 FL/C:

Additionally for OPTIFLUX 2000 F / 4000 F / 5000 F / 6000 F / 7300 FL/C:

Additionally for OPTIFLUX 2000 F / 4000 F / 5000 F / 6000 F / 7300 FL/C:Additionally for OPTIFLUX 2000 F / 4000 F / 5000 F / 6000 F / 7300 FL/C:
The field coils in type of explosion protection "q" and "m" must be protected by a 160 mA fuse.
The breaking capacity of the fuse must be in accordance with the prospective short circuit
current of the supply. This concerns:

OPTIFLUX 2000 F / 4000 F DN10...20 ("me")

DN200...300 ("qe")

DN25...150 ("qe") (optional)

OPTIFLUX 5000 F "sandwich" DN2.5...15 ("me")

OPTIFLUX 5000 F "flange" DN15...100 ("mb")

OPTIFLUX 6000 F DN25...80 ("mb")

OPTIFLUX 7300 FL/C DN25...100 ("mb")

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4 ELECTRICAL CONNECTIONS

INFORMATION!

•

The internal field coil fuses of an IFC 300 electronic unit fulfill the above mentioned
requirement with respect to breaking capacity. The prospective short circuit current for the
field coil circuit is limited to 35 A.

•

The IFC 300 signal converter is delivered with two Ex e certified M20x1,5 cable glands and
one Ex e certified M20x1.5 stopping plug in the connection compartment for power supply etc.
and with two Ex e certified M20x1.5 cable glands in the connection box for the field current /
electrode cables.

•

The OPTIFLUX 2000 F / 4000 F / 5000 F / 6000 F flow sensors are normally delivered with two
Ex e certified M20x1.5 cable glands, clamping range Ø 6...12 mm

•

The OPTIFLUX 2300 C / 4300 C / 5300 C / 6300 C / 7300 SW/C / 7300 FL/C: flow meters are
normally (connection compartment in type of Ex protection Ex e) delivered with two Ex e
certified M20x1.5 cable glands, clamping range Ø 6...12 mm, and one Ex e certified M20x1.5
stopping plug.
The optional flow meters with connection compartment in type of Ex protection Ex d
(flameproof enclosure) are normally delivered with one Ex d certified M20x1.5 stopping plug
and two temporarily non-Ex certified simple plastic plugs. The purpose of these two plugs is
only to keep the connection compartment free of dust and moisture during transport and
storage.

OPTIFLUX

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OPTIFLUX

4.2 Connection of IFC 300

The flow sensors and the signal converter in field version must be incorporated in the
equipotential bonding system of the installation. This can be established internally by connection
of the protective earth (PE) conductor of the mains supply system to the internal PE clamp, or
externally, by connecting a separate equipotential bonding conductor to the external U-clamp
terminal (size M5) at respectively the flange of the mounting support (in case of compact
instruments) or at the wall-mounting device (for signal converters in field version). A separate

bonding conductor must have a cross-sectional area of at least 4 mm

The display cover seals the electronics compartment of the converter housing and provides type

of protection “flameproof enclosure”. The terminal compartment is default in type of protection
“increased safety” and can optionally be performed as flameproof enclosure. The threaded joints

formed by the covers and housing are a tight fit due to the requirements for type of protection

“flameproof enclosure”. Screw the covers on and off with care and never use excessive force !

Keep the screw-threads free of dirt and well-greased (e.g. with PTFE grease). The grease will
help to prevent the threads from locking due to corrosion.
To unscrew the covers, first release the interlocking devices (one at each cover). Therefore
unscrew the M4 head screw with internal hexagon socket set using a No. 3 Allen key until the
interlocking device can be turned. After the covers are screwed back onto the housing, make
sure that the interlocking devices are properly refitted.

ELECTRICAL CONNECTIONS 4

2

.

WARNING!

Allow the electronics to de-energize before opening the electronics compartment of the flow
converter housing. Wait at least 35 minutes for T6 and 10 minutes for T5 before opening.

Figure 4-1: Electrical connections

Terminals

Terminals Function, electrical data

TerminalsTerminals

L, N

L+, L-

A, A-, A+
B, B­C, C­D, D-

Function, electrical data

Function, electrical dataFunction, electrical data

Connections for mains supply, always non-Ex i

100...230 V AC, +10%/-15%, 22 VA

12...24 V DC, +30%/-10% (short-time: -25%), 12 W
24 V AC, +10%/-15%, 22 VA
24 V DC, +30%/-25%, 12 W
Um = 253 V

Connections for signal I/Os (PELV circuits), non-“Ex
i” or “Ex i”, are dependent on the specific version of
the signal converter ordered. Consult the tables
with CG numbers for details.

Data for connection on all Ex e terminals:
stripping lenght for wires: 8 mm, torque for screws: 0.6 - 0.8 Nm.

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4 ELECTRICAL CONNECTIONS

The exact I/O-configuration for circuits A, B, C and D is order-specific and can be determined by
the CG number shown on the converter. Therefore check the data on the back of electronics unit
of the signal converter. The CG number contains 10 characters of which the last three characters
(XYZ) determine the configuration of the I/O circuits:

CGxx

CGxx **** **** **** XXXX YYYY ZZZZ

CGxxCGxx

Pos 1...4 5 6 7 8 9 10

The wiring of instruments has to be in accordance with the requirements as specified in the
relevant national or international standard for electrical installations in hazardous areas, e.g.
EN 60079-14. Section 9 (wiring systems) of this standard applies to all types of protection.

Section 10 (additional requirements for type of protection “d” - flameproof enclosures), section
11 (additional requirements for type of protection “e” - increased safety) and section 12
(additional requirements for type of protection “i” - intrinsic safety) apply to respectively “Ex d”,
“Ex e” and “Ex i” performed connection (terminal) compartments.

OPTIFLUX

determine I/O circuits

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OPTIFLUX

4.3 Input/output connections

• IFC 300 converters are available in versions with intrinsically safe (Ex i) or non-intrinsically

safe (non-Ex i) inputs/outouts (I/O). Details of both versions (CG. no's and connection of
terminals) are listed in the IFC 300 handbook.

• The versions with non-Ex i I/O are listed in the IFC 300 handbook (title: alterable input/output

versions). The version basic I/O is also with non-Ex i I/O. The electrical data of the I/O circuits
with non-Ex i I/O are:

< 32 V DC and In ≤100 mA.

U

n

• The versions with Ex i inputs/outputs are listed in the IFC 300 handbook (title: Fixed, non-

alterable input/output versions), except the IFC 300 version basic I/O, last digits of CG. no.

100. This version is always with non-Ex i I/O.
The electrical data of the versions with Ex i I/O are listed below.

The following signal I/O connections are available as intrinsically safe:

I/O PCB

I/O PCB CG nr.

I/O PCBI/O PCB

CG nr.

CG nr. CG nr.
(XYZ)

(XYZ)

(XYZ)(XYZ)

I/O functions

I/O functions

I/O functionsI/O functions

ELECTRICAL CONNECTIONS 4

Ex i I/O 300, 310, 320 Current output 4...20 mA with

200, 210, 220,
300, 310, 320

200, 210, 220 Current output 4...20 mA with

Ex i Option 220, 320 Current output 4...20 mA passive

210, 220, 310,
320, D10, D20,
E10, E20

210, 310, D10,
E10

Fieldbus I/O D00, D10, D20 Profibus-PA

E00, E10, E20 Foundation Fieldbus

HART passive (C and C-)

Pulse/status output (D and D-)

HART active (C and C-)

(A and A-)

Pulse/status output / control input
(B and B-)

Current output 4...20 mA active
(A and A-)

(C and C-, D and D-)

(C and C-, D and D-)

EEx ia IIC
Ui = 30 V, Ii = 100 mA, Pi = 1,0 W

Ci = 10 nF, Li = negligibly low

EEx ia IIC
Uo = 21 V, Io = 90 mA, Po = 0,5 W

Lineair characteristics
Co = 90 nF, Lo = 2,0 mH

= 110 nF, Lo = 0,5 mH

C

o

EEx ia IIC
Ui = 30 V, Ii = 100 mA, Pi = 1,0 W

Ci = 10 nF, Li = negligibly low

EEx ia IIC
Uo = 21 V, Io = 90 mA, Po = 0,5 W

Lineair characteristics
Co = 90 nF, Lo = 2,0 mH

= 110 nF, Lo = 0,5 mH

C

o

EEx ia IIC
Ui = 24 V, Ii = 380 mA, Pi = 5,32 W

Ci = 5 nF, Li = 10 μH
Suitable for connection to an

intrinsically safe fieldbus in
accordance with the FISCO model.

The I/O circuits titled “Ex i I/O” and “Ex i Option” are always provided with type of protection
Intrinsic Safety (Ex ia). The I/O-circuits “Fieldbus I/O Profibus-PA” as well as “Fieldbus I/O
Foundation Fieldbus” can be provided with type of protection Intrinsic Safety.

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4 ELECTRICAL CONNECTIONS

Up to a maximum of 4 intrinsically safe (Ex ia) in-/outputs are possible. All intrinsically safe
circuits are galvanically insulated with respect to earth and each other. To avoid summation of

voltages and current, the wiring of these “Ex ia”-circuits must be sufficiently separated, e.g. in

accordance with the requirements of standard EN 60079-14, clause 12.2.

The “Ex ia” signal in-/outputs may only be connected to other “Ex ia” or “Ex ib” approved devices

(e.g. intrinsically safe isolation amplifiers), even if such devices are installed in a non-hazardous
location !

Connection to non-“Ex i” devices cancels the “Ex ia” properties of the flowmeter.

Terminals L and N (or L+ and L-) for connection of the mains supply are not available with type of

protection “intrinsic safety”. To achieve the necessary separation distances according to EN
60079-11 between the non-”Ex i” and “Ex i” circuits, the mains terminals are provided with a
semi-circular protection cover with a “snap-in” lock. This cover MUST be closed before

establishing the power supply to the converter.

INFORMATION!

“

For converters with an
energized state for short periods of time, to access the intrinsically safe terminals for possible
checks. However, the semi-circular insulation cover over the non-intrinsically safe mains supply
terminals L and N (or L+ and L-) MUST be kept closed.

Ex e” terminal compartment, the compartment can be opened in an

OPTIFLUX

INFORMATION!

More detailed information about the connections can be found in the handbook of the converter.

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OPTIFLUX

5.1 Maintenance

The flowmeters are maintenance free with respect to the flowmetering properties. Within the
scope of periodic inspections required for electrical equipment installed in hazardous areas it is
recommended to check the housing for signs of damage or corrosion.
This is especially important for following Ex d flowsensor housings:

• OPTIFLUX 2300 C or 4300 C, sizes DN25...150

• OPTIFLUX 5300 C, sizes DN25...100

• OPTIFLUX 7300 SW/C, sizes DN25...100

• In case of replacement of one (or more) of the four M6 hexagon socket head cap screws with

wich the IFC converter housing is connected tot the OPTIFLUX 7000 flowmeter, equivalent
types must be used, that are M6x16 hexagon socket head cap screws to EN ISO 4762, steel
quality A2-70 or A4-70.

• If needed, contact the manufacturer for information on the dimensions of the flameproof

joints.

5.2 Before and after opening

MAINTENANCE AND SERVICE 5

WARNING!

the following instructions must always be carefully followed, if the housing of the signal
converter has to be opened respectively closed again.

Before opening:

• Make absolutely sure that there is no explosion hazard!

• Gas-free certificate!

• Make sure that all connecting cables are safely isolated from all external sources!

• Allow the elctronics to de-energize before opening the electronics compartment of the

converter housing. Wait at least 35 minutes for T6 and 10 minutes for T5 before opening.

When the instructions above are strictly followed, the display cover (includes glass window) of
the electronics compartment may be removed. First unscrew the head screw with internal
hexagon socket set (size M4) of the interlocking device by a No. 3 Allen key, until the cover can
rotate freely.

After opening:

• Before the cover is screwed back onto the housing, the screw-thread must be clean and well-

greased with an acid and resin-free grease, e.g. PTFE grease.

• Screw the cover as tight as possible into the housing by hand, until it cannot be opened by

hand anymore. Fixate the screw of the interlocking device tight with the No. 3 Allen key.

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37

5 MAINTENANCE AND SERVICE

5.3 Replacement of mains fuse

WARNING!

Before commencing the work, refer to Before and after opening on page 37

• Pull the display unit of the mounting frame using the two metal levers left and right and turn

display unit carefully aside.

• Unscrew the two screws size M4 that hold the mounting frame with the electronics unit.

• Carefully pull the mounting frame with electronics unit almost completely out of the housing,

disconnect the long rectangular (14-pole) blue connector at the back-end of the electronics
unit. Now carefully remove the unit from the housing.

• The mains fuse is located in a fuse holder at the back-end of the electronics unit. The

specifications must be as follows:

Fuse type: 5 x 20 mm (H) according to IEC 60127

Fuse type: 5 x 20 mm (H) according to IEC 60127

Fuse type: 5 x 20 mm (H) according to IEC 60127Fuse type: 5 x 20 mm (H) according to IEC 60127

Power supply

Power supply Electrical data

Power supplyPower supply

12...24 V DC 250 V / 2 A

24 V AC/DC 250 V / 2 A

100...230 V AC 250 V / 1.6 A

Electrical data

Electrical dataElectrical data

OPTIFLUX

.

WARNING!

Before reassembling the unit, refer to Before and after opening on page 37

• Reassemble the unit in reverse order.

.

38

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OPTIFLUX

NOTES 6

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39

KROHNE product overview

• Electromagnetic flowmeters

• Variable area flowmeters

• Ultrasonic flowmeters

• Mass flowmeters

• Vortex flowmeters

• Flow controllers

• Level meters

• Temperature meters

• Pressure meters

• Analysis products

• Measuring systems for the oil and gas industry

• Measuring systems for sea-going tankers

Head Office KROHNE Messtechnik GmbH
Ludwig-Krohne-Str. 5
D-47058 Duisburg (Germany)
Tel.:[phone]
Fax:[phone]
[e-mail]

© KROHNE 07/2010 - 7309482600 - AD EX IFC 300 R06 en - Subject to change without notice.

The current list of all KROHNE contacts and addresses can be found at:
www.krohne.com