Siemens SITRANS F Series, SITRANS FX330, SITRANS FXT030, SITRANS FXS300, SITRANS FX330 Ex-d Additional Operating Instructions

Additional Operating Instructions

SITRANS F

Vortex flowmeters

SITRANS FX330 Ex-d

09/2018Edition

www.siemens.com/flow

CONTENTS

SITRANS FX330

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 Marking............................................................................................................................. 5

2.3 Flammable products ........................................................................................................ 7

2.4 Equipment category .........................................................................................................7

2.5 Types of protection ........................................................................................................... 8

2.6 Ambient temperature / temperature classes.................................................................. 9

2.7 Surface temperature for equipment category II 2 D...................................................... 16

2.8 Electrical data................................................................................................................. 17

3 Installation 18

3.1 Mounting ......................................................................................................................... 18

3.2 Special conditions........................................................................................................... 19

4 Electrical connections 20

4.1 General notes ................................................................................................................. 20

4.2 Power supply .................................................................................................................. 22

4.3 Inputs / Outputs.............................................................................................................. 22

4.4 Grounding and equipotential bonding............................................................................ 23

4.5 Flow sensor circuits (remote version only) ................................................................... 24

5 Operation 25

5.1 Start-up........................................................................................................................... 25

5.2 Operation ........................................................................................................................ 25

5.3 Electrostatic charge .......................................................................................................26

6 Service 27

6.1 Maintenance ................................................................................................................... 27

6.2 Dismantling .................................................................................................................... 27

7 Notes 29

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SITRANS FX330

1.1 General notes

This additional instruction applies to explosion-protected versions of vortex flowmeters with
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.
It completes the standard manual for the non-explosion protected 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.

The EU declaration of conformity for the equipment category II 2 G and II 2 D is based on the EU
type examination certificate:

SAFETY INSTRUCTIONS

1

KIWA 16 ATEX 0045X

KIWA 16 ATEX 0045X

KIWA 16 ATEX 0045XKIWA 16 ATEX 0045X

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 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 IECEx certificate is:

IECEx KIWA 16.0022X

IECEx KIWA 16.0022X

IECEx KIWA 16.0022XIECEx KIWA 16.0022X

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.

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SAFETY INSTRUCTIONS

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.

SITRANS FX330

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SITRANS FX330

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 separate binary output and a separate current input.

The SITRANS FX330 remote version consists of the SITRANS FXS300 flow sensor and the
SITRANS FXT030 signal converter.

2.2 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 versions 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.

DEVICE DESCRIPTION

®

2

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

1 Device version SITRANS FX330
2 Production order number
3 Serial number
4 Year of manufacture
5 Marking acc. to KIWA 16 ATEX 0045X or IECEx KIWA 16.0022X
6 Permissible ambient temperature range
7 Electrical connection data
8 Safety instructions, disposal and data matrix
9 Internet address of the manufacturer

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DEVICE DESCRIPTION

SITRANS FX330

Figure 2-2: Example of nameplates for remote version

1 Device version SITRANS FXT030 / SITRANS FXS300
2 Production order number
3 Serial number
4 Year of manufacture
5 Marking according to KIWA 16 ATEX 0045X or IECEx KIWA 16.0022X
6 Permissible ambient temperature range
7 Electrical connection data
8 Safety instructions, disposal and data matrix
9 Internet address of the manufacturer

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SITRANS FX330

2.3 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

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.

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.

DEVICE DESCRIPTION

= -20...+60°C / -4...+140°F and P

atm

= 0.8...1.1 bar /

atm

2

2.4 Equipment category

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" according to "Equipment
Protection Level [EPL] Gb or [EPL] Db".

INFORMATION!

Definition of zone 1 according 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 according 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.

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DEVICE DESCRIPTION

2.5 Types of protection

The following types of protection are used:

The following types of protection are used:

The following types of protection are used:The following types of protection are used:

Electronics compartment Ex db (Gb) or Ex tb (Db)

Terminal compartment either Ex db or Ex eb (Gb) or Ex tb (Db)

Flow sensor Ex ia (Gb or Db)

Marking for the flameproof version of compact versions:

Marking for the flameproof version of compact versions:

Marking for the flameproof version of compact versions:Marking for the flameproof version of compact versions:

ATEX II 2 G

IECEx Ex db ia IIC T6...T2 Gb

Marking for the flameproof version of remote versions:

Marking for the flameproof version of remote versions:

Marking for the flameproof version of remote versions:Marking for the flameproof version of remote versions:

ATEX II 2 G

IECEx Ex db [ia] IIC T6 Gb

II 2 G Ex db ia IIC T6...T2 Gb

II 2 GII 2 G

Ex db ia IIC T6...T2 Gb

Ex db ia IIC T6...T2 GbEx db ia IIC T6...T2 Gb
or
Ex db eb 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

II 2 G Ex db [ia] IIC T6 Gb

II 2 GII 2 G

II 2 G

II 2 G Ex ia IIC T6...T2 Gb

II 2 GII 2 G

Ex db [ia] IIC T6 Gb (signal converter)

Ex db [ia] IIC T6 GbEx db [ia] IIC T6 Gb
or
Ex db eb [ia] IIC T6 Gb

Ex db eb [ia] IIC T6 Gb

Ex db eb [ia] IIC T6 GbEx db eb [ia] IIC T6 Gb

Ex ia IIC T6...T2 Gb

Ex ia IIC T6...T2 Gb (flow sensor)

Ex ia IIC T6...T2 GbEx ia IIC T6...T2 Gb

Ex db (Gb) or Ex tb (Db)

Ex db (Gb) or Ex tb (Db)Ex db (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)

Ex ia (Gb or Db)

Ex ia (Gb or Db)Ex ia (Gb or Db)

Ex db ia IIC T6...T2 Gb

Ex db ia IIC T6...T2 GbEx db ia IIC T6...T2 Gb
or
Ex db eb 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 [ia] IIC T6 Gb (signal converter)

Ex db [ia] IIC T6 GbEx db [ia] IIC T6 Gb
or
Ex db eb [ia] IIC T6 Gb

Ex db eb [ia] IIC T6 Gb

Ex db eb [ia] IIC T6 GbEx db eb [ia] IIC T6 Gb

Ex ia IIC T6...T2 Gb (flow sensor)

Ex ia IIC T6...T2 GbEx ia IIC T6...T2 Gb

SITRANS FX330

Marking for the dustproof version of compact versions:

Marking for the dustproof version of compact versions:

Marking for the dustproof version of compact versions:Marking for the dustproof version of compact versions:

ATEX II 2 D

IECEx Ex tb ia IIIC T70

Marking for the dustproof version of remote versions:

Marking for the dustproof version of remote versions:

Marking for the dustproof version of remote versions:Marking for the dustproof version of remote versions:

ATEX II 2 D

IECEx Ex tb [ia] IIIC T70

II 2 D Ex tb ia IIIC T70

II 2 DII 2 D

Ex tb ia IIIC T70°C...T240

Ex tb ia IIIC T70Ex tb ia IIIC T70

II 2 D Ex tb [ia] IIIC T70

II 2 DII 2 D

II 2 D

II 2 D Ex ia IIIC T70

II 2 DII 2 D

Ex tb [ia] IIIC T70°C Db

Ex tb [ia] IIIC T70Ex tb [ia] IIIC T70

Ex ia IIIC T70

Ex ia IIIC T70°C...T240

Ex ia IIIC T70Ex ia IIIC T70

Ex tb ia IIIC T70°C...T240

Ex tb ia IIIC T70Ex tb ia IIIC T70

C...T240°C Db

C...T240C...T240

Ex tb [ia] IIIC T70°C Db

Ex tb [ia] IIIC T70Ex tb [ia] IIIC T70

Ex ia IIIC T70°C...T240

Ex ia IIIC T70Ex ia IIIC T70

C...T240°C Db

C...T240C...T240

C Db

C DbC Db

C...T240°C Db

C...T240C...T240

C Db (signal converter)

C DbC Db

C Db (flow sensor)

C DbC Db

C...T240°C Db

C...T240C...T240

C Db (signal converter)

C DbC Db

C Db

C DbC Db

C Db (flow sensor)

C DbC Db

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SITRANS FX330

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

II Explosion protection, group II

IIII

2222 Equipment category 2

GGGG Gas explosion protection

DDDD Dust ignition protection

Ex db

Ex db Protection type "Flameproof enclosure"

Ex dbEx db

Ex eb

Ex eb Protection type "Increased safety"

Ex ebEx eb

Ex tb

Ex tb Protection type "Equipment - dust ignition protection by enclosure"

Ex tbEx tb

Ex ia

Ex ia Protection type "Intrinsic safety", protection level "ia" (flow sensor, compact device)

Ex iaEx ia

Ex [ia]

Ex [ia] Protection type "Intrinsic safety", protection level "ia" (flow sensor circuit, remote

Ex [ia]Ex [ia]

IIC

IIC Gas group, suitable for gas groups IIC, IIB and IIA

IICIIC

IIIC

IIIC Dust group, suitable for groups IIIC, IIIB and IIIA

IIICIIIC

T6...T2

T6...T2 Temperature class range, suitable for temperature class T1...T6

T6...T2T6...T2

T70

T70°CCCC Maximum surface temperature of the signal converter housing without dust coating at

T70T70

T70

T70°C...T240

T70T70

Gb

Gb EPL, suitable for zone 1 and zone 2

GbGb

Db

Db EPL, suitable for zone 21 and zone 22

DbDb

DEVICE DESCRIPTION

version)

ambient temperature 65°C / 149°F and product temperature 65°C / 149°F

C...T240°CCCC Maximum surface temperature of the flow sensor housing without dust coating at

C...T240C...T240

ambient temperature 65°C / 149°F (is determined by the product temperature)

2

2.6 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

• Product temperature T

• Nominal size DN

• Heat resistance of the connecting cable

amb

m

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2

DEVICE DESCRIPTION

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.

SITRANS FX330

•

Insulation must be limited to the piping. Unobstructed ventilation of the signal converter
must be ensured.

The permitted ambient temperature range is indicated on the nameplate; depending on the
device version it is T

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.

= -40...+65°C / -40...+149°F.

amb

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SITRANS FX330

Max. permissible product and ambient temperatures with signal converter or
connection box mounted above the flow sensor

DEVICE DESCRIPTION

2

Temperature class in °C

Temperature class T6 T5 T4 T3 T2

T

in °C 60 65 60 65 60 65 40 60 65 40 60 65

amb

Nominal size

DN15…25 80 65 100 100 135 1351200 200

DN40…50 80 65 100 100 135 1351200 175

DN65…100 80 65 100 10011351130

200 150

1

DN150...300 75 65 100 100 135 1351200 185

1 Permanent service temperature of connecting cable and cable entry min. 80°C

165

1

1

1

1

1

150

1

130

1

155

1

240 200

240 175

235

1

240 185

Temperature class in °F

Temperature class T6 T5 T4 T3 T2

T

in °F 140 149 140 149 140 149 104 140 149 104 140 149

amb

Nominal size

DN15…25 176 149 212 212 275 2751392 392

DN40…50 176 149 212 212 275 2751392 347

DN65…100 176 149 212 21212751266

392 302

1

DN150...300 167 149 212 212 275 2751392 365

1 Permanent service temperature of connecting cable and cable entry min. 176°F

329

1

1

1

1

1

302

1

266

1

311

1

464 392

464 347

455

1

464 365

1

1

150

1

1

1

1

302

1

1

165

1

150

1

130

1

155

1

329

1

302

1

266

1

311

1

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2

DEVICE DESCRIPTION

Max. permissible product and ambient temperatures with signal converter or
connection box mounted at side or underneath the flow sensor

Temperature class in °C

Temperature class T6 T5 T4 T3 T2

T

in °C 60 65 60 65 60 65 40 60 65 40 60 65

amb

SITRANS FX330

Nominal size

DN15…25 85 65 100 100 135 135 200 200 200

DN40…50 80 65 100 100 135 135 200 200 200

DN65…100 85 65 100 100 135 135

1

200 200

1

DN150...300 80 65 100 100 135 135 200 200 200

1 Permanent service temperature of connecting cable and cable entry min. 80°C

200

1

240 240 240

1

240 240 240

1

240 240

1

240 240 240

Temperature class in °F

Temperature class T6 T5 T4 T3 T2

T

in °F 140 149 140 149 140 149 104 140 149 104 140 149

amb

Nominal size

DN15…25 185 149 212 212 275 275 392 392 392

DN40…50 176 149 212 212 275 275 392 392 392

DN65…100 185 149 212 212 275 275

1

392 392

1

DN150...300 176 149 212 212 275 275 392 392 392

1 Permanent service temperature of connecting cable and cable entry min. 176°F

392

1

464 464 464

1

464 464 464

1

464 464

1

464 464 464

1

1

240

464

1

1

1

1

1

1

1

1

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SITRANS FX330

DEVICE DESCRIPTION

Max. permissible product and ambient temperatures for devices with painted flow
sensors / signal converters or connection box mounted above the flow sensor

Temperature class in °C

Temperature class T6 T5 T4 T3 T2

T

in °C 60 65 60 65 60 65 40 60 65 40 60 65

amb

Nominal size

2

DN15…25 70 65 100 95

DN40…50 70 65 100 95

DN65…100 70 65 100190

DN150...300 65 65 95 90

1 Permanent service temperature of connecting cable and cable entry min. 80°C

1

12011151120 12011151120 1201115

1

11511051120 11511051120 1151105

1

105195

1

12011101120 12011101120 1201110

1

120 105195 1120 105195

Temperature class in °F

Temperature class T6 T5 T4 T3 T2

T

in °F 140 149 140 149 140 149 104 140 149 104 140 149

amb

Nominal size

DN15…25 159 149 212 203124812391248 248

DN40…50 159 149 212 203123912211248 239

DN65…100 158 149 2121194122112031248 221

DN150...300 149 149 203 194124812301248 248

1 Permanent service temperature of connecting cable and cable entry min. 176°F

239

1

1

1

1

1

221

1

203

1

230

1

248 248

248 239

248 221

248 248

1

1

1

1

239

1

1

1

1

1

221

1

203

1

230

1

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2

DEVICE DESCRIPTION

SITRANS FX330

Max. permissible product and ambient temperatures for devices with painted flow
sensors / signal converters or connection box mounted at side or underneath the flow
sensor

Temperature class in °C

Temperature class T6 T5 T4 T3 T2

T

in °C 60 65 60 65 60 65 40 60 65 40 60 65

amb

Nominal size

DN15…25 65 65 95 90 120 1201120 120 120

DN40…50 65 65 85 80 1201120

DN65…100 65 65 95 90

1

1201120

1

1

120 120

1

120 120

1

DN150...300 65 65 85 85 120 1201120 120 120

1 Permanent service temperature of connecting cable and cable entry min. 80°C

1

120

1

120

1

1

120 120 120

120 120

120 120

120 120 120

Temperature class in °F

Temperature class T6 T5 T4 T3 T2

T

in °F 140 149 140 149 140 149 104 140 149 104 140 149

amb

Nominal size

DN15…25 149 149 203 194 248 2481248 248 248

DN40…50 149 149 185 176 2481248

DN65…100 149 149 203 24812481248

1

1

248 248

1

248 248

1

DN150...300 149 149 185 248 248 2481248 248 248

1 Permanent service temperature of connecting cable and cable entry min. 176°F

1

248

1

248

1

1

248 248 248

248 248

248 248

248 248 248

1

120

1

1

1

1

1

120

1

1

1

248

1

248

1

1

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SITRANS FX330

DEVICE DESCRIPTION

Max. permissible product and ambient temperatures with signal converter in stainless
steel (bright) or connection box in stainless steel (bright) mounted above the flow
sensor

Temperature class in °C

Temperature class T6 T5 T4 T3 T2

T

in °C 60 65 60 65 60 65 40 60 65 40 60 65

amb

Nominal size

2

DN15…25 75 65 100 100 135 1351200 170

DN40…50 75 65 100 10011351130

DN65…100 75 65 100 10011351115

DN150...300 75 65 100 10011351135

1 Permanent service temperature of connecting cable and cable entry min. 80°C

200 150

1

1951135

1

200 155

1

145

1

1

1

1

1

130

1

115

1

135

1

225 170

235 150

195

1

230 155

Temperature class in °F

Temperature class T6 T5 T4 T3 T2

T

in °F 140 149 140 149 140 149 104 140 149 104 140 149

amb

Nominal size

DN15…25 167 149 212 212 275 2751392 338

DN40…50 167 149 212 21212751266

DN65…100 167 149 212 21212741239

DN150...300 167 149 212 21212751275

1 Permanent service temperature of connecting cable and cable entry min. 176°F

392 302

1

3831274

1

392 311

1

293

1

1

1

1

1

266

1

239

1

275

1

437 338

455 302

383

1

446 311

1

1

135

1

1

1

1

274

1

1

145

1

130

1

115

1

135

1

293

1

266

1

239

1

275

1

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2

DEVICE DESCRIPTION

Max. permissible product and ambient temperatures with signal converter in stainless
steel (bright) or connection box in stainless steel (bright) mounted at side or
underneath the flow sensor

Temperature class in °C

Temperature class T6 T5 T4 T3 T2

T

in °C 60 65 60 65 60 65 40 60 65 40 60 65

amb

Nominal size

SITRANS FX330

DN15…25 85 65 100 100 135 135 200 200 200

DN40…50 75 65 100 100 135 135

DN65…100 85 65 100 100 135 135

DN150...300 75 65 100 100 135 135 200 200 200

1 Permanent service temperature of connecting cable and cable entry min. 80°C

1

1

200 200 200

200 200

1

200

1

240 240 240

1

240 235

1

240 240

1

240 240 235

Temperature class in °F

Temperature class T6 T5 T4 T3 T2

T

in °F 140 149 140 149 140 149 104 140 149 104 140 149

amb

Nominal size

DN15…25 185 149 212 212 275 275 392 392 392

DN40…50 167 149 212 212 275 275

DN65…100 185 149 212 212 275 275

DN150...300 167 149 212 212 275 275 392 392 392

1 Permanent service temperature of connecting cable and cable entry min. 176°F

1

1

392 392 392

392 392

1

392

1

464 464 464

1

464 455

1

464 464

1

464 464 455

2.7 Surface temperature for equipment category II 2 D

For use in areas with flammable dust it should be noted that the indicated maximum surface
temperature of T70°C at an ambient temperature of 65°C / 149°F and a product temperature of
65°C / 149°F is valid without a dust coating.

1

1

1

1

225

225

437

437

1

1

1

1

1

1

1

1

16

For higher product temperatures the maximum surface temperature is defined by the product.

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SITRANS FX330

2.8 Electrical data

Signal circuits

Signal circuits

Signal circuitsSignal circuits

The vortex flowmeter signal circuits may only be connected to circuits with the following
maximum values. A safety value of U

DEVICE DESCRIPTION

= 253 V is considered for the power supply units.

m

2

Device version Circuit

Nominal voltage Nominal current

Terminals

SITRANS FX330
SITRANS FXT030

4...20 mA version

SITRANS FX330
SITRANS FXT030
Foundation Fieldbus version

1

SITRANS FX330
SITRANS FXT030
Profibus PA version

1 Further information for operation of the FF transmitter are provided in separate supplementary instructions.
2 Further information for operation of the PA transmitter are provided in separate supplementary instructions.

Flow sensor circuits

Flow sensor circuits

Flow sensor circuitsFlow sensor circuits

2

Current output 4...20 mA
C1, C2

Binary output
M1, M2, M3, M4

Current input
I1, I2

Bus connection
A1, A2
B1, B2

12...32 VDC 4...20 mA

8...32 VDC ≤100 mA

9...32 VDC 4...20 mA

9...32 VDC 20 mA

For the compact versions, the intrinsically safe flow sensor circuits are designed as internal
circuits.

For the remote versions, the intrinsically safe flow sensor circuits are led through. The
maximum permissible safety values of the flow sensor circuits are listed below:

Remote signal converter, flow sensor circuit (terminal 1 to 7, colour-coded)

Remote signal converter, flow sensor circuit (terminal 1 to 7, colour-coded)

Remote signal converter, flow sensor circuit (terminal 1 to 7, colour-coded)Remote signal converter, flow sensor circuit (terminal 1 to 7, colour-coded)

U

=6.65V; Io= 1107 mA; Po= 650 mW; Co=1.5µF; Lo=73µH

o

Remote flow sensor (terminal 1 to 7, colour-coded)

Remote flow sensor (terminal 1 to 7, colour-coded)

Remote flow sensor (terminal 1 to 7, colour-coded)Remote flow sensor (terminal 1 to 7, colour-coded)

=7V; Ii= 1107 mA; Pi= 650 mW; Ci=0; Li=0

U

i

INFORMATION!

The verification of intrinsic safety for the interconnection between the flow sensor an the signal
converter is not necessary, if the cable length does not exceed 50 m / 164 ft and the supplied
cable is used.

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3

INSTALLATION

3.1 Mounting

Mounting 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.

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.

Aligning the signal converter

The signal converter and the connection box for the remote versions may be aligned on the base
or the wall bracket up to a maximum of ± 180 . For this reason, the M4 hexagon socket screw
connecting the base and the signal converter or the connection box must be loosened. Once the
signal converter or the connection box has been turned, it must be screwed back on to the base
again (tightening torque 2 Nm).

SITRANS FX330

18

Figure 3-1: Aligning the signal converter

1 M4 hexagon socket screw on connection housing

• De-energise the signal converter.

• Loosen the hexagon socket screw 1.

• Turn the signal converter or the connection box.

• Screw signal converter or connection box back to the base again.

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SITRANS FX330

3.2 Special conditions

Flameproof joints in the housing

The housing must be replaced if there is any damage to the joint area. The flameproof thread
gaps and the cylindrical joint between the terminal and the electronics compartments must be
inspected visually after opening.

WARNING!

Repairs of the flameproof joints are not allowed.

Electrostatics

For painted versions, risks due to electrostatic charge must be minimized.
For further information refer to

Thermal and electrical data

Observe the maximum ambient and product temperatures and electrical data. For further
information refer to

temperature for equipment category II 2 D

Electrostatic charge

on page 26.

Ambient temperature / temperature classes

on page 16 and refer to

INSTALLATION

on page 9 and refer to

Electrical data

on page 17.

3

Surface

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4

ELECTRICAL CONNECTIONS

4.1 General notes

Rated values for insulation

• The insulation of the vortex flowmeter SITRANS FX330 . .. - Ex is rated in compliance with
IEC 60 664-1.
The following rating parameters are taken into account:

• Overvoltage category for signal and instrument loops: II

• Pollution degree of the insulation: 2

Terminal compartment

The signal circuit is electrically connected in the terminal compartment of the signal converter.
The terminal compartment is designed in protection type "d" and/or "e" or in protection type "t".
Unused entries are to be closed in accordance with EN 60079-1, EN 60079-7 or EN 60079-31.
The entry of the cables in the connection terminal is possible in the following way.

• Device version Ex db ia IIC T6...T2 Gb or Ex db [ia] IIC T6
Direct entry of the connecting cables by way of approved flameproof cable glands (M20x1.5)
into the flameproof terminal compartment (V ≤ 2000 cm³). The cable glands require a
separate test certificate in accordance with EN 60079-1. Observe the requirements of the test
certificate for the cable glands.

• Device version Ex db ia IIC T6...T2 Gb or Ex db [ia] IIC T6
Direct entry of the connecting cables by way of conduits into the flameproof enclosed
terminal compartment of the device. Once the conduit has been screwed in, it must form a
flameproof joint with the housing with a minimum thread length of 8 mm. A suitable
mechanical stopping box must be provided in accordance with installation provisions. The
conduit must be installed in compliance with its separate test certificate.

• Device version Ex db eb ia IIC T6...T2 Gb or Ex db eb [ia] IIC T6
Direct entry of the connecting cables by way of approved cable glands (M20x1.5) into the
terminal compartment in protection type increased safety.
The cable glands require a separate test certificate in accordance with EN 60079-7. Observe
the requirements of the test certificate for the cable glands.

• Device version Ex tb ia IIIC T70...T240 Db or Ex tb [ia] IIIC T70°C Db
Direct entry of the connecting cables by way of approved dustproof cable glands (M20x1.5)
into the dustproof terminal compartment (V ≤ 2000 cm³).
The cable glands require a separate test certificate in accordance with EN 60079-31. Observe
the requirements of the test certificate for the cable glands.

SITRANS FX330

20

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SITRANS FX330

Connecting cables

The connecting cables should be selected according to the applicable installation standards
(e.g. EN 60079-14 / VDE 0165) and the maximum operating temperature.

The connecting cable between the flow sensor and the wall bracket for remote versions is part of
the supply.

• The connecting cables must be fixed and laid so they are sufficiently protected against

• Lay cables so as to ensure that there is sufficient distance between surfaces of the flow

• Supplied blind plugs / cable entries guarantee protection against foreign objects and water

• The outer diameter of the connecting cable must be within the sealing range of the cable

• Unused cable entries are to be closed in accordance with EN 60079-1 and/or EN 60079-7

• Before connecting or loosening the equipotential bonding cable, ensure there are no

ELECTRICAL CONNECTIONS

damage.

sensor and the connecting cable.

(protection category) IP66/67 according to EN 60529.

entry (7...12 mm / 0.28...0.47").

and/or EN 60079-31 (>IP66/67).

differences in potential.

4

Ensure that the gaskets and incised gasket ring are tight.

CAUTION!

The IP protection category of the signal converter housing is largely determined by the cable
gland used and the installation.

Connection terminals

The capacity of the connection terminals is 0.5 mm² to 2.5 mm².

The torque of the connection terminals is 0.6 Nm.

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4

ELECTRICAL CONNECTIONS

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 current output or the bus connection.

4.3 Inputs / Outputs

The terminal assignment of the built-in electrical equipment is described in the standard
documentation. The signal circuits of the vortex flowmeter may only be connected to
downstream devices or circuits that satisfy the requirements of protective extra-low voltage
(PELV).

Connecting the power supply and the I/O functions

• Before connecting or disconnecting the electrical connection cables of the device, make sure
that all cables leading to the converter are isolated from the ground of the hazardous area.
This also applies to protective earth (PE) and equipotential bonding conductors (PA).

• All connecting cable conductors and shields that are not securely connected to the
equipotential grounding system of the hazardous area shall be carefully isolated from each
other and from ground (test voltage 1500 V

for non-intrinsically safe cables).

eff

SITRANS FX330

22

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SITRANS FX330

4.4 Grounding and equipotential bonding

CAUTION!

Equipotential bonding

Equipotential bonding

Equipotential bondingEquipotential bonding
Vortex signal converters and flow sensors must be included in the on-site equipotential bonding
system according to EN 60079-14! They are connected to the PA terminals.

For compact versions and measuring devices with flange connections, the flow sensor is
conductively connected to the pipeline.
For compact versions and measuring device of the type "sandwich", a separate conductor
connected either to the internal or external PA terminal must be provided to connect to the
equipotential bonding.

ELECTRICAL CONNECTIONS

4

Figure 4-1: Ground connection of the compact version

1 Electrical grounding connection on connection piece between the flow sensor and the signal converter
2 Electrical grounding terminal in the housing

For remote versions the connection of the flow sensor can either be made via the PA connection
in the terminal compartment of the signal converter or via the external PA connection.

Figure 4-2: Ground connection of the remote version

1 Electrical grounding connection on the flow sensor
2 Electrical grounding connection on the housing of the signal converter

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4

ELECTRICAL CONNECTIONS

4.5 Flow sensor circuits (remote version only)

Observe the following points when connecting the flow sensor to the signal converter:

• Use only the supplied connecting cable (max. length 50 m / 164 ft).

• Before connecting or loosening the equipotential bonding cable, ensure there are no

differences in potential.

• Connect the connecting cable shield to the equipotential bonding of the hazardous area in the
wall bracket. On the flow sensor side, the shield must be carefully isolated from the earth
(test voltage 500 V

the terminal block.

• The terminal compartments of the flow sensor circuits are supplied with a bridge between
the internal PA connection and the terminal with the designation "gnye". This connection
must not be separated.

) and connected via the terminal end to the corresponding connector on

eff

SITRANS FX330

r

n

ye

g

k

b

u

b

rd

g

nye

g

rd

bu

ye

gn

bk

gr

gn ye

Figure 4-3: Connection of the remote version

1 Connection terminal flow sensor
2 Connection terminal signal converter
3 Connection shielding flow sensor
4 Shielding (drain wire and overall shield)
5 Connection shielding signal converter
6 Heat shrink tubing

gr

bk

ye

bu

rd

gn

gnye

24

The flow sensor circuit is designed in protection type "intrinsic safety Ex ia IIC".

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SITRANS FX330

5.1 Start-up

Start-up is only permitted when the measuring device:

• is correctly installed in the system and connected.

• has been checked for the proper state with regard to its installation and connection

• has been correctly locked to the electronics and terminal compartment.

The operator of the system has to check prior to start-up, if the start-up was in compliance with
the national regulations for checks.

If the device needs to be configured due to the existence of an explosive atmosphere, this can be
done using the supplied bar magnets. There is no need to open the housing as it can be done
through the glass window of the electronics compartment or digitally via the signal output

(HART

OPERATION

requirements.

The electronics and terminal compartment of the vortex flowmeter must be locked during
operation. The covers for the electronics and terminal compartment are secured by a lock.
First manually tighten the covers until the stop. Then loosen the covers (≤ 90°) so that the
lock (special closure) can be secured in the next possible position in the cover.
Use a WS3 Allen key to turn the screw.
No waiting period is necessary prior to opening the housing.

®

interface).

5

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.

Opening the signal converter (protection type "flameproof enclosure" or "dustproof housing" or
"terminal compartment in increased safety") in hazardous areas is only permitted in a de­energised state.

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5

OPERATION

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.

SITRANS FX330

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SITRANS FX330

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.

SERVICE

6

Treat cover threads as necessary with the lubricating paint UNIMOLY C220

For systems in hazardous areas, regular tests 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.

• Checking the measuring unit and the piping connections for leakage.

• Check the measuring unit and the indicator for dust deposits.

• Including the flowmeter in the regular 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 displays or components from the manufacturer may be used.

®

.

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. This also applies to protective earth (PE) or functional earth (FE) and equipotential bonding
conductors (PA).

Display

The display can be rotated in 90° increments. It is connected to the connector as shown in the
following figure.

Exchanging the converter insert

It is permitted to replace the entire SITRANS FXT030 converter insert with a brand-new version
identical in construction.

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6

SERVICE

SITRANS FX330

Take special note of the following figure and:

• ensure that the construction is the same by checking the nameplates.

• the connecting cable of the flow sensor circuits is to be laid in the cutout provided between

the converter insert and housing. Avoid damage such as that caused by crushing.

• proper connection of the flow sensor 5 and the display connector 1.

• tighten the mounting screws M4 7 evenly.

Figure 6-1: Connection of the signal converter module

1 Connector for LC display
2 Service connector
3 SIL jumper
4 Display clamps
5 Connection to the flow sensor
6 Nameplate of the converter insert
7 Fixing screw

Exchanging the entire device

The dismantling and installation is within the responsibility of the operator.

Before disconnecting the electric connecting cable of the device, make sure that all cables
leading to the indication unit are isolated from the ground of the hazardous area. This also
applies to functional earthing conductors (FE) and equipotential bonding conductors (PA).

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.

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SITRANS FX330

NOTES

7

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7

NOTES

SITRANS FX330

30

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SITRANS FX330

NOTES

7

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For more information

www.siemens.com/flow

www.siemens.com/processautomation

Siemens AG
Process Industries and Drives
Process Automation
76181 Karlsruhe

Germany

Product
Information