Siemens SIPROCESS GA700 Administrator guide
SIPROCESS GA700
Continuous Gas Analytics
SIPROCESS GA700 rack and wall
mounted devices
Compact Operating Instructions
7MB3000-.....-....
7MB3010-.....-.... 7MB3017-.....-....
7MB3020-.....-.... 7MB3027-.....-....
7MB3040-.....-.... 7MB3047-.....-....
06/2023
A5E35134047-AB
Introduction 1
Safety notes 2
Installing/mounting 3
Connecting 4
Commissioning 5
Service and maintenance 6
Technical data 7
Product documentation
and support A
Ex px safety equipment B
Ex pz safety equipment C
Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will
be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to
property damage.
Qualied Personnel
The product/system described in this documentation may be operated only by personnel qualied for the specic
task in accordance with the relevant documentation, in particular its warning notices and safety instructions.
Qualied personnel are those who, based on their training and experience, are capable of identifying risks and
avoiding potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended or
approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and maintenance
are required to ensure that the products operate safely and without any problems. The permissible ambient
conditions must be complied with. The information in the relevant documentation must be observed.
Trademarks
All names identied by ® are registered trademarks of SiemensAG. The remaining trademarks in this publication
may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software
described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the
information in this publication is reviewed regularly and any necessary corrections are included in subsequent
editions.
Siemens AG
Digital Industries
Postfach 48 48
90026 NÜRNBERG
GERMANY
Document order number:A5E35134047
Ⓟ 08/2023 Subject to change
Copyright © SiemensAG 2023.
All rights reserved
Table of contents
1 Introduction ........................................................................................................................................... 7
1.1 Purpose of this documentation ............................................................................................ 7
1.2 Document history ................................................................................................................ 7
1.3 Purpose ............................................................................................................................... 7
1.4 Field of application .............................................................................................................. 8
1.5 Nameplate layout............................................................................................................... 11
1.6 Checking the consignment................................................................................................. 11
1.7 Designated use .................................................................................................................. 11
1.8 Industrial use note ............................................................................................................. 12
1.9 Security information .......................................................................................................... 12
1.10 Transportation and storage ................................................................................................ 13
1.11 Notes on warranty ............................................................................................................. 13
2 Safety notes ......................................................................................................................................... 15
2.1 Preconditions for use ......................................................................................................... 15
2.1.1 Warning symbols on the device.......................................................................................... 15
2.1.2 Laws and directives - including Korea ................................................................................. 15
2.1.3 Conformity with European directives.................................................................................. 16
2.2 Requirements for special applications................................................................................. 17
2.3 Basic safety notes............................................................................................................... 17
2.4 Measuring high oxygen concentrations .............................................................................. 18
2.5 Use in hazardous areas....................................................................................................... 19
2.5.1 Internal explosion protection.............................................................................................. 19
2.5.2 External explosion protection............................................................................................. 19
2.5.2.1 Overview........................................................................................................................... 19
2.5.2.2 Safety measures for all types of protection.......................................................................... 20
2.5.2.3 Type of protection "Ex p" .................................................................................................... 20
2.5.2.4 Type of protection "Ex t" ..................................................................................................... 21
2.5.3 Qualied personnel for hazardous area applications............................................................ 21
2.5.4 Opening device in energized state...................................................................................... 23
3 Installing/mounting ............................................................................................................................. 25
3.1 Basic safety notes............................................................................................................... 25
3.1.1 External stresses and loads................................................................................................. 25
3.1.2 Installation location requirements ...................................................................................... 25
3.1.2.1 Hazardous zones/danger through ammable and potentially explosive sample gas - wall
unit ................................................................................................................................... 27
3.1.2.2 Hazardous zones/danger through ammable and potentially explosive sample gas - rack
unit ................................................................................................................................... 29
SIPROCESS GA700 rack and wall mounted devices
Compact Operating Instructions, 06/2023, A5E35134047-AB 3
3.1.3 Damage to membrane keyboard and display ...................................................................... 31
3.2 Safety notes for hazardous areas ........................................................................................ 31
3.3 Installation conditions........................................................................................................ 31
3.4 Rack-mounted device......................................................................................................... 32
3.4.1 Safety notes for hazardous areas ........................................................................................ 32
3.4.2 Device-specic safety instructions....................................................................................... 33
3.5 Wall-mounted device ......................................................................................................... 34
3.5.1 Safety notes for hazardous areas ........................................................................................ 34
3.5.2 Device-specic safety instructions....................................................................................... 34
3.6 Disassembly....................................................................................................................... 36
4 Connecting .......................................................................................................................................... 37
4.1 Basic safety notes............................................................................................................... 37
4.2 Safety notes for hazardous areas ........................................................................................ 38
4.3 Safety notes for Ex e or Ex py devices.................................................................................. 41
4.4 Gas connections ................................................................................................................ 41
4.4.1 Connection information..................................................................................................... 41
4.4.2 Leaky gas connections ....................................................................................................... 42
4.4.3 Connecting gas.................................................................................................................. 43
4.4.3.1 Wall-mounted device with analyzer modules, non high-temperature version....................... 43
4.4.3.2 Device with one OXYMAT 7 analyzer module, high-temperature version ............................. 43
4.4.3.3 Device with one ULTRAMAT 7 analyzer module, high-temperature version .......................... 44
4.5 Electrical connections ........................................................................................................ 45
4.5.1 Connection information..................................................................................................... 45
4.5.2 Requirements for electrical connection............................................................................... 45
4.5.3 Connecting the Ethernet cable ........................................................................................... 46
4.6 Connecting the rack-mounted device ................................................................................. 48
4.6.1 Arrangement of the gas connections in the rack-mounted device........................................ 48
4.6.2 Connecting signal and Ethernet cables ............................................................................... 48
4.6.3 Connecting the power supply............................................................................................. 50
4.7 Connecting the wall-mounted device ................................................................................. 51
4.7.1 Arrangement of the gas connections in the wall-mounted device ....................................... 51
4.7.1.1 Overview........................................................................................................................... 51
4.7.1.2 Purging gas connections .................................................................................................... 55
4.7.1.3 Purging gas failure for operation with type of protection Ex py/pz ....................................... 57
4.7.2 Overview conduit connectors............................................................................................. 58
4.7.3 Connecting the power supply............................................................................................. 59
4.7.4 Connecting the signal cables.............................................................................................. 61
4.7.4.1 Permitted signal cables ...................................................................................................... 61
4.7.4.2 Connecting the signal cables.............................................................................................. 62
4.7.4.3 Electrical connections with conduits................................................................................... 63
5 Commissioning .................................................................................................................................... 65
5.1 Basic safety notes............................................................................................................... 65
5.2 Information on commissioning........................................................................................... 67
5.3 Requirements for commissioning ....................................................................................... 68
Table of contents
SIPROCESS GA700 rack and wall mounted devices
4Compact Operating Instructions, 06/2023, A5E35134047-AB
5.4 Checking gas paths for leaks .............................................................................................. 68
5.4.1 Recommended test setup................................................................................................... 69
5.4.1.1 Recommended test setup for analyzer modules in all versions............................................. 69
5.4.1.2 Recommended test setup for the OXYMAT 7 high-temperature ........................................... 71
5.4.1.3 Recommended test setup for the ULTRAMAT 7 high-temperature........................................ 72
5.4.2 Leakage tests..................................................................................................................... 74
5.4.2.1 Checking OXYMAT 7 for leaks............................................................................................. 74
5.4.2.2 Checking ULTRAMAT 7 for leaks.......................................................................................... 76
5.4.2.3 Checking CALOMAT 7 for leaks........................................................................................... 77
5.5 Local commissioning.......................................................................................................... 77
6 Service and maintenance .................................................................................................................... 81
6.1 Basic safety notes............................................................................................................... 81
6.2 Safety notes for hazardous areas ........................................................................................ 82
6.3 Maintenance and repair work............................................................................................. 82
6.4 Maintaining the analyzer in Ex areas .................................................................................. 83
6.5 Return procedure............................................................................................................... 84
6.6 Disposal............................................................................................................................. 84
7 Technical data...................................................................................................................................... 87
7.1 General technical specications.......................................................................................... 87
7.1.1 Rack-mounted housing ...................................................................................................... 87
7.1.2 Wall-mounted housing....................................................................................................... 89
7.1.2.1 Using Ex p.......................................................................................................................... 91
7.1.2.2 Cable glands...................................................................................................................... 91
7.1.3 OXYMAT 7 ......................................................................................................................... 92
7.1.4 ULTRAMAT 7 ...................................................................................................................... 94
7.1.5 CALOMAT 7 ....................................................................................................................... 96
7.2 Operation in hazardous areas............................................................................................. 98
A Product documentation and support ................................................................................................ 101
A.1 Product documentation ................................................................................................... 101
A.2 Technical support............................................................................................................. 102
A.3 Electrical connections and terminal assignment................................................................ 102
B Ex px safety equipment ..................................................................................................................... 107
B.1 Overview......................................................................................................................... 107
B.1.1 Connection diagrams....................................................................................................... 108
B.1.1.1 Maintenance work ........................................................................................................... 108
B.1.1.2 Ex p safety equipment...................................................................................................... 109
B.1.2 Technical specications .................................................................................................... 111
C Ex pz safety equipment ..................................................................................................................... 115
C.1 Ex pz safety equipment .................................................................................................... 115
Index .................................................................................................................................................. 117
Table of contents
SIPROCESS GA700 rack and wall mounted devices
Compact Operating Instructions, 06/2023, A5E35134047-AB 5
Table of contents
SIPROCESS GA700 rack and wall mounted devices
6Compact Operating Instructions, 06/2023, A5E35134047-AB
Introduction 1
1.1 Purpose of this documentation
These instructions are a brief summary of important features, functions and safety information,
and contain all information required for safe use of the device. Read the instructions carefully
prior to installation and commissioning. In order to use the device correctly, rst review its
principle of operation.
The instructions are aimed at persons who install and commission the device.
To realize optimum performance from the device, read the complete operating instructions.
See also
Ex pz safety equipment (Page115)
1.2 Document history
The following table shows major changes in the documentation compared to the previous
edition.
Edition Remark
10/2014 First edition
05/2015 Expansion commissioning. Correction of the internal document links
05/2018 Expansion with new Ex analyzer modules:
• ULTRAMAT 7 and CALOMAT 7
• OXYMAT 7 and ULTRAMAT 7 in high-temperature version
Expansion and updating of the document
11/2019 OXYMAT 7 and ULTRAMAT 7 in high-temperature version
Updating the document
01/2022 General update of the document
05/2023 Expansion and updating of the document
Merging with SIPROCESS GA700 Quick Start
Adding content for PROFIBUS, CSA certicate, MiniPurge
1.3 Purpose
The device is designed for the concentration analysis of gases in gas mixtures. Depending on the
installed analyzer module, dierent gases can be examined.
Use the device only for measuring/analysis of gas concentrations in gas mixtures according to
the information in section"Technical data (Page87)".
SIPROCESS GA700 rack and wall mounted devices
Compact Operating Instructions, 06/2023, A5E35134047-AB 7
It is not permissible to use this device as a gas detector application.
Note
Aggregate state of examined substances
The system can only be used for gaseous samples.
1.4 Field of application
These compact operating instructions describe SIPROCESS GA700 devices. They refer to the rack-
mounted and wall-mounted devices with installed analyzer modules that are used depending
on the measuring task and local conditions.
The following analyzer modules are available for following devices:
• Normal temperature analyzer modules OXYMAT 7, ULTRAMAT 7 and CALOMAT 7 for rack-
mounted and wall-mounted devices. Up to two analyzer modules possible per basic device.
• High-temperature analyzer modules OXYMAT 7 and ULTRAMAT 7 for wall-mounted devices.
One analyzer module possible per wall-mounted device.
Note
Special conditions
You must also take into consideration the special conditions described in the following listed
certicates. These conditions relate, in particular, to the following:
• Areas of application
• Requirements for operation in hazardous areas
• Other precautionary measures important for operation
Note
Deviating technical specications
For operation of the below-indicated devices in hazardous areas, deviating technical
specications may apply. The technical specications listed in this document are valid in such
cases.
Introduction
1.4Field of application
SIPROCESS GA700 rack and wall mounted devices
8Compact Operating Instructions, 06/2023, A5E35134047-AB
The following table provides an overview of the explosion-proof device variants.
Table 1-1 SIPROCESS GA700 Ex devices with analyzer modules
Device
variant
MLFB number1) Explosion protection type ATEX, IECEX, and CSA
certicates
C 7MB3000-xxxxx-xxCx
7MB301x-2xxxx-xxAx
7MB302x-2xxxx-xxxx
7MB304x-2xxxx-xxxx
II 2/3G Ex ec db ic nC op is IIC T4 Gb/Gc (for occasionally
explosive gases)
The following applies for products with OXYMAT7 modules:
II 3GEx ec db ic nC op is IIC T4 Gc (for gases that are
ammable but not potentially explosive above upper amma‐
ble limit)2)
Rack-mounted device:
BVS 18 ATEX E 084 X
BVS 15 ATEX E 007 X
IECEx BVS 15.0007X
D 7MB3000-xxxxx-xxDx
7MB301x-2xxxx-xxBx
7MB301x-3xxxx-xxBx
7MB302x-2xxxx-xxxx
7MB304x-2xxxx-xxxx
II 3GEx ec db ic nC op is IIC T4 Gc (for non-ammable
gases)
Wall-mounted device:
BVS 14 ATEX E 154 X
IECEx BVS 14.0104X
E 7MB3000-xxxxx-xxEx
7MB301x-2xxxx-xxBx
7MB301x-3xxxx-xxBx
7MB302x-2xxxx-xxxx
7MB304x-2xxxx-xxxx
II 2G Ex pyb db ib op is IIC T4 Gb (for occasionally explosive
gases)2)
Wall-mounted device:
BVS 14 ATEX E 153 X
IECEx BVS 14.0104X
7MB3000-xKxxx-xxEx
7MB302x-3xxxx-xxxx
II 2G Ex pxb ib IIC T3 Gb (for occasionally explosive
gases)2)
G 7MB3000-xxxxx-xxGx
7MB301x-2xxxx-xxBx
7MB301x-3xxxx-xxBx
7MB302x-2xxxx-xxxx
7MB304x-2xxxx-xxxx
II 2G Ex pyb db ib op is IIC T4 Gb (for occasionally explosive
gases)2)
II 3G Exec db ib nC op is IIC T4 Gc (for non-ammable
gases)
II 3D/2G Ex pyb db ib op is IIIC/IIC T65°C ... T80°C/T4 Dc/Gb3)
(for occasionally explosive gases)2)
II 3D Ex tc db ib op is IIIC T65°C...T80°C Dc3) (for non-
ammable gases)
Wall-mounted device:
BVS 14 ATEX E 153 X
IECEx BVS 14.0104X
7MB3000-xKxxx-xxEx
7MB302x-3xxxx-xxxx
II 2G Ex pxb ib IIC T3 Gb (for occasionally explosive
gases)2)
II 3D/2G Ex pxb ib IIIC/IIC T130°C/T3 Dc/Gb (for occasion‐
ally explosive gases)2)
II 3D Ex tc ib IIIC T130°C Dc (for non ammable gases)
K 7MB3000-xxxxx-xxKx
7MB301x-2xxxx-xxAx
7MB302x-2xxxx-xxxx
7MB304x-2xxxx-xxxx
NI: Class I Division 2, Groups A, B, C, D, T4
Class I Zone 2, AEx/Ex ec db ic nA nC op is IIC T4 Gc (gas mix‐
tures that are occasionally between lower and upper amma‐
ble limits)
The following applies for products with OXYMAT 7 modules:
NI: Class I Division 2, Groups A, B, C, D, T4
Class I Zone 2, AEx/Ex ec db ic nC op is IIC T4 Gc (for gases that
are ammable above upper ammable limit)2)
Rack-mounted device:
CSA 23CA80153895X
Introduction
1.4Field of application
SIPROCESS GA700 rack and wall mounted devices
Compact Operating Instructions, 06/2023, A5E35134047-AB 9
Device
variant
MLFB number1) Explosion protection type ATEX, IECEX, and CSA
certicates
L 7MB3000-xxxxx-xxLx
7MB301x-2xxxx-xxBx
7MB301x-3xxxx-xxBx
7MB302x-2xxxx-xxxx
7MB304x-2xxxx-xxxx
(for non-ammable gases below lower ammable limit)
NI: Class I Division 2, Groups A, B, C, D, T4
Class I Zone 2, AEx/Ex ec db ic nC op is IIC T4 Gc
DIP: Class II Division 2, Groups F, G; Class III, T65°C..T80°C 3)
Zone 22, AEx/Ex tc db ic op is IIIC T65°C..T80°C Dc 3)
Wall-mounted device:
CSA 23CA80153895X
Type 4X, IP65
7MB3000-xKxxx-xxLx
7MB302x-3xxxx-xxxx
(for non-ammable gases below lower ammable limit)
DIP: Class II Division 2, Groups F, G; Class III, T130°C
Zone 22, AEx/Ex tc ic IIIC T130 °C Dc
M 7MB3000-xxxxx-xxMx
7MB301x-2xxxx-xxBx
7MB301x-3xxxx-xxBx
7MB302x-2xxxx-xxxx
7MB304x-2xxxx-xxxx
(for gas mixtures that are occasionally between lower and up‐
per ammable limits)2)
TYPE PZ: Class I Division 2, Groups A, B, C, D, T4
Class I Zone 2, AEx/Ex pzc db ic op is IIC T4 Gb
DIP: Class II Division 2, Groups F, G; Class III, T65°C...T80°C 3)
Zone 22, AEx/Ex pzc db ic op is IIIC T65°C...T80°C Dc 3)
Wall-mounted device:
CSA 23CA80153895X
Type 4X, IP65
7MB3000-xKxxx-xxLx
7MB302x-3xxxx-xxxx
(gas mixtures that are occasionally between lower and upper
ammable limits)2)
TYPE PZ: Class I Division 2, Groups A, B, C, D, T3
Class I Zone 2, AEx/Ex pzc ic IIC T3 Gb
DIP: Class II Division 2, Groups F, G; Class III, T130 °C
Zone 22, AEx/Ex pzc ic IIIC T130°C Dc
1) Machine-readable product designation
2) One ame arrestor each is required in the sample gas path and reference gas path for the OXYMAT7
3) For devices with 7MB301x-3xxxx-xxxx, T80 °C/T4 applies, otherwise T65°C/T4
Introduction
1.4Field of application
SIPROCESS GA700 rack and wall mounted devices
10 Compact Operating Instructions, 06/2023, A5E35134047-AB
1.5 Nameplate layout
①Article number ④DataMatrix Code ECC 200
②Serial number ⑤Date of manufacture
③Revision status
The nameplate with the article number and other important information on the rack-
mounted device is located on the left side of the enclosure exterior and on the wall-mounted
device on top of the enclosure exterior.
1.6 Checking the consignment
1. Check the packaging and the delivered items for visible damages.
2. Report any claims for damages immediately to the shipping company.
3. Retain damaged parts for clarication.
4. Check the scope of delivery by comparing your order to the shipping documents for
correctness and completeness.
WARNING
Using a damaged or incomplete device
Risk of explosion in hazardous areas.
• Do not use damaged or incomplete devices.
1.7 Designated use
Use the device in accordance with the information on the nameplate and in the Technical data
(Page87).
Introduction
1.7Designated use
SIPROCESS GA700 rack and wall mounted devices
Compact Operating Instructions, 06/2023, A5E35134047-AB 11
1.8 Industrial use note
NOTICE
Use in a domestic environment
This Class A Group 1 equipment is intended for use in industrial areas.
In a domestic environment this device may cause radio interference.
1.9 Security information
Siemens provides products and solutions with industrial security functions that support the
secure operation of plants, systems, machines and networks.
In order to protect plants, systems, machines and networks against cyber threats, it is
necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial
security concept. Siemens’ products and solutions constitute one element of such a concept.
Customers are responsible for preventing unauthorized access to their plants, systems,
machines and networks. Such systems, machines and components should only be connected
to an enterprise network or the internet if and to the extent such a connection is necessary
and only when appropriate security measures (e.g. rewalls and/or network segmentation)
are in place.
For additional information on industrial security measures that may be implemented, please
visit
https://www.siemens.com/industrialsecurity.
Siemens’ products and solutions undergo continuous development to make them more
secure. Siemens strongly recommends that product updates are applied as soon as they are
available and that the latest product versions are used. Use of product versions that are no
longer supported, and failure to apply the latest updates may increase customer’s exposure
to cyber threats.
To stay informed about product updates, subscribe to the Siemens Industrial Security RSS
Feed under
https://www.siemens.com/industrialsecurity.
Introduction
1.9Security information
SIPROCESS GA700 rack and wall mounted devices
12 Compact Operating Instructions, 06/2023, A5E35134047-AB
1.10 Transportation and storage
To guarantee sucient protection during transport and storage, observe the following:
• Keep the original packaging for subsequent transportation.
• Devices/replacement parts should be returned in their original packaging.
• If the original packaging is no longer available, ensure that all shipments are properly
packaged to provide sucient protection during transport. Siemens cannot assume liability
for any costs associated with transportation damages.
NOTICE
Insucient protection during storage
The packaging only provides limited protection against moisture and inltration.
• Provide additional packaging as necessary.
Special conditions for storage and transportation of the device are listed in Technical data
(Page87).
1.11 Notes on warranty
The contents of this manual shall not become part of or modify any prior or existing agreement,
commitment or legal relationship. The sales contract contains all obligations on the part of
Siemens as well as the complete and solely applicable warranty conditions. Any statements
regarding device versions described in the manual do not create new warranties or modify the
existing warranty.
The content reects the technical status at the time of publishing. Siemens reserves the right
to make technical changes in the course of further development.
Introduction
1.11Notes on warranty
SIPROCESS GA700 rack and wall mounted devices
Compact Operating Instructions, 06/2023, A5E35134047-AB 13
Introduction
1.11Notes on warranty
SIPROCESS GA700 rack and wall mounted devices
14 Compact Operating Instructions, 06/2023, A5E35134047-AB
Safety notes 2
2.1 Preconditions for use
This device left the factory in good working condition. In order to maintain this status and to
ensure safe operation of the device, observe these instructions and all the specications relevant
to safety.
Observe the information and symbols on the device. Do not remove any information or
symbols from the device. Always keep the information and symbols in a completely legible
state.
2.1.1 Warning symbols on the device
Symbol Explanation
Consult operating instructions
Hot surface
Dangerous electrical voltage
2.1.2 Laws and directives - including Korea
Observe the test certication, provisions and laws applicable in your country during connection,
assembly and operation. These include, for example:
• National Electrical Code (NEC - NFPA 70) (USA)
• Canadian Electrical Code (CEC Part I) (Canada)
SIPROCESS GA700 rack and wall mounted devices
Compact Operating Instructions, 06/2023, A5E35134047-AB 15
Further provisions for hazardous area applications are for example:
• IEC60079-14 (international)
• EN60079-14 (EU and UK)
• For Korea only:
$
2.1.3 Conformity with European directives
The product described in this document is in conformity with the relevant harmonization
legislation, and its amendments, of the European Union.
Electromagnetic compatibili‐
ty directive EMC
2014/30/EU
Directive of the European Parliament and of the Council on the
harmonisation of the laws of the Member States relating to elec‐
tromagnetic compatibility
Low voltage directive LVD
2014/35/EU
Directive of the European Parliament and of the Council on the
harmonisation of the laws of the Member States relating to the
making available on the market of electrical equipment designed
for use within certain voltage limits
Explosive atmospheres direc‐
tive ATEX
2014/34/EU
Directive of the European Parliament and the Council on the har‐
monisation of the laws of the Member States relating to equip‐
ment and protective systems intended for use in potentially ex‐
plosive atmospheres
Restriction of hazardous sub‐
stances directive RoHS
2011/65/EU
Directive of the European Parliament and the Council on the re‐
striction of the use of certain hazardous substances in electrical
and electronic equipment
The applicable directives can be found in the EU Declaration of Conformity of the specic
device.
See also
https://www.siemens.com/analytics/certicates (https://www.siemens.com/analytics/
certicates)
Safety notes
2.1Preconditions for use
SIPROCESS GA700 rack and wall mounted devices
16 Compact Operating Instructions, 06/2023, A5E35134047-AB
2.2 Requirements for special applications
Due to the large number of possible applications, each detail of the described device versions for
each possible scenario during commissioning, operation, maintenance or operation in systems
cannot be considered in the instructions. If you need additional information not covered by
these instructions, contact your local Siemens oce or company representative.
Note
Operation under special ambient conditions
We highly recommend that you contact your Siemens representative or our application
department before you operate the device under special ambient conditions as can be
encountered in nuclear power plants or when the device is used for research and development
purposes.
2.3 Basic safety notes
DANGER
Toxic gases and liquids
Danger of poisoning when venting the device: if toxic process media are measured, toxic gases
and liquids can be released.
• Before venting ensure that there are no toxic gases or liquids in the device, or take the
appropriate safety measures.
WARNING
Hazardous contact voltage
Risk of injury through hazardous contact voltage when the device is open or not completely
closed.
The degree of protection specied on the nameplate or in Technical data (Page87) is no
longer guaranteed if the device is open or not properly closed.
• Make sure that the device is securely closed.
WARNING
Device modications
Danger to personnel, system and the environment can result from modications and repairs to
the device.
• Only carry out modications or repairs that are described in the operating instructions for
the device.
• Do not loosen any screws of the enclosure openings (except if otherwise stated in any
documentation of the manufacturer).
Safety notes
2.3Basic safety notes
SIPROCESS GA700 rack and wall mounted devices
Compact Operating Instructions, 06/2023, A5E35134047-AB 17
WARNING
Pollution degree class when using the explosion protection Ex e
There is a risk of certications becoming invalid
When using the explosion protection Ex e, pollution degree 2 must be complied with inside the
device (in accordance with IEC 60664-1).
WARNING
Improper device modications
Risk of electrical shock and device damage. Fuses are not replaceable. Please contact Siemens
service.
2.4 Measuring high oxygen concentrations
WARNING
Measuring gas mixtures with high oxygen concentration
Explosion hazard
Introducing non-ammable gas mixtures with an oxygen concentration of more than 21% can
result in an accumulation of oxygen in increased concentration in the enclosure. There is a
danger of explosion.
• Purge the enclosure with inert gas (nitrogen) during the analysis when introducing non-
ammable gas mixtures with an oxygen concentration of more than 21%.
Note
Measuring high oxygen concentrations
For the measurement of high O2 concentrations in excess of 25%, it is necessary that all parts
that come in contact with the sample gas are free of oil and grease and do not contain any
particles that could react with O2.
We highly recommend you use specially cleaned analyzer modules with the "Cleaned for O2"
option for such measurements.
Note
Measuring high oxygen concentration in hazardous areas
The analysis of gas mixtures with an oxygen content of more than 21% does not form part of the
type test certicate. Therefore, the analysis of these gas mixtures is not permitted without
further consideration.
Safety notes
2.4Measuring high oxygen concentrations
SIPROCESS GA700 rack and wall mounted devices
18 Compact Operating Instructions, 06/2023, A5E35134047-AB
2.5 Use in hazardous areas
2.5.1 Internal explosion protection
Internal explosion protection refers to the sample gas path (containment system "CS") in the
analyzer and to the explosion protection of the process gas. A dierentiation must be made
between the following cases:
Table 2-1 Internal explosion protection: Dierentiation of cases
Sample gas Measures
Non-ammable gas mix‐
tures and gas mixtures
below 25% of the lower
ammable level (LFL)
If you have ensured that the sample gas in the CS does not become ammable, ame arrestors are
dispensable.
Occasionally explosive
gas mixtures below up‐
per ammable limit
(UFL)
The introduction of an occasionally explosive gas mixture into the wall-mounted device is permis‐
sible only with the explosion protection type Ex px/py, under NFPA 496 for North America amma‐
ble gases may be introduced using APU described in Ex pz safety equipment (Page115). We rec‐
ommend an automatic purging unit in accordance with Ex px.
When introducing a ammable or occasionally explosive gas mixture in OXYMAT 7 into the wall-
mounted device, each inlet/outlet for sample gas and reference gas must be equipped with a ame
arrestor. The installed ame arrestors have to full the safety-specic requirements of this amma‐
ble gas mixture.
Introducing a ammable gas mixture below upper ammable limit in OXYMAT 7 into the rack-
mounted device is not permissible.
Gas mixtures which are
frequently or perma‐
nently explosive
Do not introduce any frequently or permanently explosive gas mixtures!
Gas mixtures above the
upper ammability level
(UFL)
A case-by-case assessment is required for these ammable gas mixtures.
Flammable gas mixtures
with OXYMAT 7
Flame arrestor is needed, make sure the reference gas pressure is always 2000 hPa (± 150 hPa)
above sample gas pressure.
2.5.2 External explosion protection
2.5.2.1 Overview
The external explosion protection serves to prevent penetration of ammable gas mixtures (gas
vapors) into the enclosure or ignition on the surfaces.
OXYMAT 7: When conducting ammable or non-ammable sample gases into the hazardous
area, both the sample gas inlet and outlet must be provided with a ame arrestor.
The maximum permissible sample gas pressure in the analyzer depends on the type of
connected gas. Make sure that no higher sample gas pressures occur than specied in the
technical data of the respective device version. The exact specications of the sample gas
inlet conditions can be found in the section "Technical data (Page87)".
Safety notes
2.5Use in hazardous areas
SIPROCESS GA700 rack and wall mounted devices
Compact Operating Instructions, 06/2023, A5E35134047-AB 19
Check the tightness of the containment system periodically at least once a year. The
procedure is described in the section "Checking gas paths for leaks (Page68)".Perform
additional tests of tightness particularly prior to the introduction of ammable sample gases
after all installation and maintenance work.
2.5.2.2 Safety measures for all types of protection
The exhaust lines for the sample gas and reference gas must terminate outside the hazardous
area at a harmless position.
The sample gas exhaust line can also be returned to the sampling point.
See also
Technical data (Page87)
Checking gas paths for leaks (Page68)
WARNING
Unstable plug-in connections
Plug-in connections without interlock can loosen and fall out. Operation in explosive
atmosphere can cause an ignition.
• Secure plug-in connections using the applicable means provided.
2.5.2.3 Type of protection "Ex p"
For gas/air mixtures above the lower ammability level (LFL), infallible containment system is
not guaranteed in the sense of ENIEC60079-2 and ENIEC60079-14, for the sample gas can
penetrate the pressurized enclosure via leakages (e.g. O-rings). However, the release of sample
gas can be assessed as limited. The maximum quantity released is assured by the quality
assurance measures of the manufacturer when the analyzer is delivered.
In order to minimize or avoid the accumulation of gases in the enclosure, Ex p devices are
purged continuously with a protective gas (purging gas). Inert gas or air is chosen as the
purging gas.
During the pre-purging phase, before the device is switched on, the purging gas ows
through the enclosure in order to remove any ammable gases that may be present. During
the operating phase the purging gas continues to be fed into the enclosure. This dilutes any
sample gas released through leaks so that an explosive gas mixture cannot arise.
Safety notes
2.5Use in hazardous areas
SIPROCESS GA700 rack and wall mounted devices
20 Compact Operating Instructions, 06/2023, A5E35134047-AB
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