Siemens SITRANS FX300 Supplementary Instructions Manual
SITRANS F
Vortex flowmeters
SITRANS FX300
Supplementary instructions
05/2015Edition
Answers for industry.
CONTENTS
SITRANS FX300
1 Safety instructions 3
1.1 General notes ................................................................................................................... 3
1.2 EC conformity ................................................................................................................... 3
1.3 Approval according to the IECEx scheme ........................................................................ 3
1.4 Safety instructions............................................................................................................ 3
2 Device description 4
2.1 Device description ............................................................................................................ 4
2.2 Description code............................................................................................................... 4
2.3 Marking............................................................................................................................. 5
2.4 Flammable products ........................................................................................................ 6
2.5 Equipment category .........................................................................................................6
2.6 Types of protection ........................................................................................................... 7
2.7 Ambient temperature / temperature classes.................................................................. 7
2.8 Electrical data................................................................................................................. 10
3 Installation 11
3.1 Installation...................................................................................................................... 11
3.2 Special Conditions .......................................................................................................... 12
4 Electrical connections 13
4.1 General notes ................................................................................................................. 13
4.2 Power supply .................................................................................................................. 13
4.3 Inputs / outputs .............................................................................................................. 13
4.4 Earthing and equipotential bonding ............................................................................... 14
4.5 Sensor circuits (remote version only)............................................................................ 15
5 Operation 16
5.1 Start-up........................................................................................................................... 16
5.2 Operation ........................................................................................................................ 16
6 Service 17
6.1 Maintenance ................................................................................................................... 17
6.2 Dismantling .................................................................................................................... 17
7 Notes 19
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SITRANS FX300
1.1 General notes
These additional "Ex" instructions apply to explosion-protected versions of vortex flowmeters
with the marking II 2 G. They complement the standard documentation for the non-explosion
protected versions.
The information given in these Instructions contains only the data relevant to Category 2
explosion protection. The technical details given in the standard documentation for the nonexplosion protected versions apply unchanged unless excluded or superseded by these
Instructions.
1.2 EC conformity
The manufacturer declares with the EC Declaration of Conformity on his own responsibility
conformity with the protection goals of Directive 94/9/EC for use in hazardous areas with gas.
The EC Type Examination Certificate of the Physikalisch Technische Bundesanstalt (PTB) forms
the basis of the EC Declaration of Conformity:
SAFETY INSTRUCTIONS
1
PTB 08 ATEX 2022 X
PTB 08 ATEX 2022 X
PTB 08 ATEX 2022 XPTB 08 ATEX 2022 X
The "X" after the certificate number refers to special conditions for safe use of the device, which
have been listed in these Instructions.
The EC Type Examination Certificate may be downloaded from the manufacturer's website as
needed.
1.3 Approval according to the IECEx scheme
Conformity with IECEx standards was tested in accordance with the IECEx Certification Scheme
for Explosive Atmospheres acc. to IEC 60079-0 and IEC 60079-11. The number of the IEC
certificate is:
IECEx PTB 12.0019X
IECEx PTB 12.0019X
IECEx PTB 12.0019XIECEx PTB 12.0019X
1.4 Safety instructions
Assembly, installation, start-up and maintenance may only be performed by personnel trained in
explosion protection!
CAUTION!
Should operating conditions and locations require the observance of further standards,
guidelines and laws, this is the responsibility of the operator and/or those commissioned by him.
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DEVICE DESCRIPTION
2.1 Device description
Vortex flowmeters measure and display the volume flow of flammable and non-flammable gases
and liquids.. The display unit contains a 4...20 mA signal output with optional HART
communication and a separate pulse/status output.
2.2 Description code
The safety description code * consists of the following elements:
1 SITRANS vortex flowmeter
2 Type series FX300
3 System components
not connected: compact device
C: Converter remote system
S: Sensor remote system
4 Marking without influence on the explosion safety protection
SITRANS FX300
®
* positions which are not needed are omitted (no blank positions)
The remote version consisting of the SITRANS FX300 S measuring sensor and the SITRANS
FX300 C signal converter is called the SITRANS FX300 R.
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SITRANS FX300
2.3 Marking
The marking key is used to mark the devices using the nameplates as illustrated here. On both
the compact devices and the remote versions, the main plate is located on the converter
housing. On the remote versions there is an additional marking on the sensor.
Compact devices with two converters for dual measurement (Dual Version) are each marked
with a nameplate, which is affixed to each of the converter housings. The details relevant to
explosion protection are identical on both nameplates.
DEVICE DESCRIPTION
2
1 Device version
2 Materials sensor and sealing
3 Serial number
4 Year of manufacture
5 Marking as per PTB 08 ATEX 2022X or IECEx PTB 12.0019X
6 Permissible ambient temperature range
7 Maximum values intrinsically safe circuits
8 Safety instructions
9 Observe operating instructions
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DEVICE DESCRIPTION
2.4 Flammable products
Atmospheric conditions
An explosive atmosphere is defined as a mixture of air and flammable gases, vapours, mists or
dusts under atmospheric conditions with the values
T
= -20...+60°C / -4...+140°F and P
atm
Outside of this range, no key data are available as to ignition behaviour for most mixtures.
Operating conditions
Vortex flowmeters operate outside of atmospheric conditions, which means that explosion
protection according to Directive 94/9/EC (ATEX) – regardless of the zone assignment – is
fundamentally not applicable due to the lack of key safety data for the interior of the measuring
unit.
WARNING!
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
for ensuring that the flowmeter is operated safely as regards 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.
= 0.8...1.1 bar.
atm
SITRANS FX300
2.5 Equipment category
Vortex flowmeters are designed according to EN 60079-0, EN 60079-1 and EN 60079-11 in
category II 2 G for use in zone 1. The inside of the measuring unit is also approved for zone 1.
INFORMATION!
Definition of zone 1 as per EN 1127-1, Annex B:
An area in which an explosive atmosphere may occasionally occur as a result of the mixture of
flammable substances in the form of gas, steam or mist with air under normal operation.
For more information see the chapter entitled "Flammable products".
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