Siemens ULTRAMAT 6 Series Administrator guide

19" rack units
Continuous gas analysis
Series 6 and ULTRAMAT 23
Compact Operating Instructions
7MB2001, 7MB2021, 7MB2023, 7MB2024,
7MB2026, 7MB2041, 7MB2047, 7MB2121,
7MB2123, 7MB2124, 7MB2126, 7MB2335,
7MB2337, 7MB2338, 7MB2355, 7MB2357,
7MB2358, 7MB2421, 7MB2427, 7MB2521,
7MB2527, 7MB2541, 7MB2547
01/2024
A5E45779144002-AB
Introduction 1
Safety instructions 2
Assembly/installation 3
Connecting 4
Commissioning 5
Service and maintenance 6
Technical speci󹪝cations 7
Taking out of operation
and disposal 8
Appendix A

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.
Quali󹪝ed Personnel
The product/system described in this documentation may be operated only by personnel quali󹪝ed for the speci󹪝c
task in accordance with the relevant documentation, in particular its warning notices and safety instructions.
Quali󹪝ed 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 identi󹪝ed by ® are registered trademarks of SiemensAktiengesellschaft. 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 Aktiengesellschaft
Digital Industries
Postfach 48 48
90026 NÜRNBERG
GERMANY
Document order number:A5E45779144002
Ⓟ 02/2024 Subject to change
Copyright © Siemens 2016 - 2024.
All rights reserved

Table of contents
1 Introduction........................................................................................................................................... 5
1.1 Purpose of this documentation ............................................................................................ 5
1.2 Product versions .................................................................................................................. 5
1.3 General information ............................................................................................................ 8
1.4 Special information and warnings ........................................................................................ 9
1.5 Proper use ........................................................................................................................... 9
1.6 Quali󹪝ed Personnel ............................................................................................................ 10
1.7 Warranty conditions........................................................................................................... 11
1.8 Delivery information .......................................................................................................... 11
1.9 Standards and regulations.................................................................................................. 11
1.10 Conformity with European directives.................................................................................. 11
2 Safety instructions............................................................................................................................... 13
2.1 Cybersecurity information.................................................................................................. 13
2.2 Prerequisites for safe use.................................................................................................... 13
2.3 Analyzers in biogas plants outside the hazardous area ........................................................ 17
2.4 Analyzers in hazardous areas.............................................................................................. 18
2.4.1 ULTRAMAT 23 IEC, ATEX, CSA, with option E20 ................................................................... 18
2.4.2 ULTRAMAT 23 CSA general ................................................................................................. 19
2.4.3 ULTRAMAT 23 CSA with option E21 .................................................................................... 19
2.4.4 Safety instructions for the introduction of combustible gases.............................................. 19
2.4.5 CALOMAT 6E...................................................................................................................... 20
2.5 Measurement of oxygen in hydrogen with Oxymat 6E ........................................................ 20
2.6 Measurement of hydrogen in oxygen with Calomat 6E ....................................................... 22
2.6.1 Calibration......................................................................................................................... 23
2.6.2 Limit.................................................................................................................................. 24
3 Assembly/installation .......................................................................................................................... 25
3.1 Safety information ............................................................................................................. 25
3.2 Installation location requirements ...................................................................................... 25
3.3 Analyzers in hazardous areas.............................................................................................. 26
4 Connecting .......................................................................................................................................... 29
4.1 Safety instructions ............................................................................................................. 29
4.1.1 General ............................................................................................................................. 29
4.1.2 Analyzers in hazardous areas.............................................................................................. 29
4.2 Electrical connection.......................................................................................................... 31
Series 6 and ULTRAMAT 23
Compact Operating Instructions, 01/2024, A5E45779144002-AB 3

4.2.1 Power connection.............................................................................................................. 31
4.2.2 Connection of the signal lines ............................................................................................ 33
4.2.3 PROFIBUS DP...................................................................................................................... 34
4.2.4 Pin assignments................................................................................................................. 35
4.3 Gas connections ................................................................................................................ 39
4.3.1 Gas preparation ................................................................................................................. 39
4.3.2 FIDAMAT 6 gas connection................................................................................................. 39
4.3.3 Toxic and corrosive gases ................................................................................................... 39
4.4 Connection diagrams......................................................................................................... 40
4.4.1 Connection diagrams for ULTRAMAT 23.............................................................................. 40
4.4.2 Connection diagrams for CALOMAT 6E ............................................................................... 42
5 Commissioning .................................................................................................................................... 43
5.1 Safety instructions ............................................................................................................. 43
5.2 General information on commissioning.............................................................................. 44
5.3 Checking for leaks.............................................................................................................. 46
6 Service and maintenance .................................................................................................................... 47
6.1 Safety instructions ............................................................................................................. 47
6.1.1 General safety instructions................................................................................................. 47
6.1.2 Danger of chemical burns for ULTRAMAT 23 ....................................................................... 48
6.1.3 Analyzers in hazardous areas.............................................................................................. 49
6.2 Replacing fuses.................................................................................................................. 50
7 Technical speci󹪝cations ....................................................................................................................... 51
7.1 Technical speci󹪝cations ULTRAMAT 23 ................................................................................ 51
7.2 General technical data series 6........................................................................................... 54
7.3 Technical speci󹪝cations ULTRAMAT 6E and ULTRAMAT channel in ULTRAMAT/OXYMAT 6E..... 55
7.4 Technical speci󹪝cations OXYMAT 6E, OXYMAT channel in OXYMAT/ULTRAMAT 6E and
OXYMAT 61 ....................................................................................................................... 56
7.5 Technical speci󹪝cations OXYMAT 64 ................................................................................... 57
7.6 Technical speci󹪝cations CALOMAT 6E ................................................................................. 58
7.7 Technical speci󹪝cations CALOMAT 62E ............................................................................... 59
7.8 Technical speci󹪝cations FIDAMAT 6..................................................................................... 60
8 Taking out of operation and disposal .................................................................................................. 63
8.1 Repair or changing of location............................................................................................ 63
8.2 Product disposal................................................................................................................. 63
A Appendix.............................................................................................................................................. 65
A.1 Technical support............................................................................................................... 65
A.2 ESD directives .................................................................................................................... 65
A.3 List of abbreviations........................................................................................................... 66
Index.................................................................................................................................................... 69
Table of contents
Series 6 and ULTRAMAT 23
4Compact Operating Instructions, 01/2024, A5E45779144002-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 necessary information required for safe use of the respective devices. Read the
manual carefully prior to assembly and startup! To ensure correct handling, become acquainted
with the principle of operation of the respective device.
The instructions are aimed at persons who mechanically assemble the devices, connect them
electrically, and commission them.
To achieve optimum usage of the respective device read the detailed version of the
respective operating instructions.
1.2 Product versions
These instructions are valid for the 19" rack units of Series 6 and the ULTRAMAT 23 gas analyzers
which are available as 19" rack unit as well as bench-top unit. This includes the devices listed
below:
• ULTRAMAT 23
• ULTRAMAT 6E
• ULTRAMAT/OXYMAT 6E
• OXYMAT 6E
• OXYMAT 61
• OXYMAT 64
• CALOMAT 6E
• CALOMAT 62E
• FIDAMAT 6
These gas analyzers are suitable for a wide variety of measurements and are also available in
di󹪜erent versions. The data on the label, among others, indicates which device version you
have.
We are using the label of an ULTRAMAT 23 as an example.
Series 6 and ULTRAMAT 23
Compact Operating Instructions, 01/2024, A5E45779144002-AB 5

8/75$0$730%$$&361&$&9_+]_9$0&20120&2
6LHPHQV$*'(.DUOVUXKH0DGHLQ)UDQFH
YSPYSP
6,(0(16
0
0DQDXO(1$(
1 Data matrix code
2 CSA conformity mark (only for 120V/60Hz and 230V/60Hz)
3 CE conformity symbol
4 Name and address of manufacturer
5 Designation of origin
6 Measuring range(s)
7 Auxiliary power supply
8 Serial number
9 Order No. (MLFB number) of the device
10 Device name
11 Compact operating instructions (safety information)
Figure1-1 ULTRAMAT 23 label (example)
These Operating Instructions also cover the rack-mounted versions of Series 6 (CALOMAT 6E and
ULTRAMAT23) approved for operation in hazardous areas.
It is essential that you also observe the respective "Special conditions" of the certi󹪝cates
referred to in the table.
These describe
• The 󹪝elds of application
• The requirements for operation in hazardous areas
• Other precautionary measures which are important for operation.
The technical speci󹪝cations in these Operating Instructions may be di󹪜erent to those in the
associated Operating Instructions for the analyzers and additional equipment under some
circumstances. The technical speci󹪝cations listed in these Operating Instructions are valid in
such cases.
Introduction
1.2Product versions
Series 6 and ULTRAMAT 23
6Compact Operating Instructions, 01/2024, A5E45779144002-AB

The following table provides an overview of the associated analyzers:
Table 1-1 ULTRAMAT 23 devices permitted for operation in hazardous areas
Certi󹪝cate Ex type of protection Device MLFB no.
BVS 16 ATEX E061 X
IECEx BVS 16.0041 X
II 3G
Ex ec ic nC IIC T4 Gc
ULTRAMAT 23 MB233x-xxxxx-xxxx-Z
E20+xxx
CSA16. 70059958 Class I, DIV 2, Groups ABCD,
T4, Ta=45°C
Class I, Zone 2 A/Ex ec ic nC IIC
T4 Gc
ULTRAMAT 23 MB233x-xxxxx-xxxx-Z
E20+xxx
CSA16. 70059958 Class I, DIV 2, Groups ABCD,
T4, Ta=45°C
Class I, Zone 2 A/Ex ec ic nC IIC
T4 Gb/Gc
ULTRAMAT 23 MB233x-xxxxx-xxxx-Z
E21+xxx
,,*([HFLFQ&,,&7*F%96$7(;(;([HFLFQ&,,&7*F,(&([%96;&/,',9*URXSV$%&'7&/,=1$([HFLFQ&,,&7*F&6$&7DPE&VDPSOHJDV&7&SUHVVXUHUDQJHK3DDEV0$:3K3DDEV
Figure1-2 Nameplate Ex E20
&/,',9*URXSV$%&'7&/,=1$([HFLFQ&,,&7*E*F&6$&7DPE&VDPSOHJDV&7&0$:3K3D
Figure1-3 Nameplate Ex CSA E21
Introduction
1.2Product versions
Series 6 and ULTRAMAT 23
Compact Operating Instructions, 01/2024, A5E45779144002-AB 7

Table 1-2 Rack-mounted analyzers of Series 6 approved for operation in hazardous areas
Certi󹪝cate Ex type of protection Device MLFB no.
TÜV 02 ATEX 1873 X II 2/3 G Ex ec nC IIC T4 Gb/Gc CALOMAT 6E 7MB252x-xxx0x-xABx-Z xxx
FM 3018862
FM16US0375X
NI/ CL I / DIV2 / ABCD / T4, Ta= 45°C
IP20
Class I / Zone 2/IIC/T4, Ta=45°C IP20
CALOMAT 6E 7MB252x-xxx0x-xADx-Z xxx
CSA 1526660 (CAN/US) Class I, DIV 2, ABCD, T4, Ta= 45°C
IP20
Class I, Zone 2 Ex nA IIC T4, Ta=45°C
IP20
CALOMAT 6E 7MB252x-xxx0x-xADx-Z xxx
FM3016050
FM16US0376X
NI/ CL I / DIV2 / ABCD / T4, Ta= 45°C
IP20
Class I / Zone 2/IIC/T4, Ta=45°C IP20
ULTRAMAT 6E OXYMAT
6E
7MB212x-xxxx0-xxxx-Z E20
7MB202x-xxxx0-xxxx-Z E20
CSA 1526657 (CAN/US) Class I, DIV 2, ABCD, T4, Ta= 45°C
IP20
Class I, Zone 2 Ex nA IIC T4, Ta=45°C
IP20
ULTRAMAT 6E OXYMAT
6E
7MB212x-xxxx0-xxxx-Z E20
7MB202x-xxxx0-xxxx-Z E20
Figure1-4 Example of additional label FM/CSA series 6
1.3 General information
This device left the factory in a safe and proper condition and has been tested. In order to
maintain this condition and to ensure safe operation, it should only be used in the manner
described by the manufacturer. Furthermore, proper transportation, storage, installation,
operation and maintenance of the device are vital for ensuring correct and safe operation.
This manual contains the information required for the intended use of the described product.
It is addressed to technically quali󹪝ed personnel who are specially trained or who have the
relevant knowledge of automation technology (measuring and control systems).
Knowledge and technically correct implementation of the safety notes and warnings
contained in this manual are required for safe installation and commissioning, as well as
for safety during the operation and maintenance of the described product. Only quali󹪝ed
Introduction
1.3General information
Series 6 and ULTRAMAT 23
8Compact Operating Instructions, 01/2024, A5E45779144002-AB

personnel have the required professional knowledge for correctly interpreting the generally
valid safety notes and warnings in this manual in each speci󹪝c case and to act accordingly.
This manual is not included in the scope of delivery for the device. It can be
downloaded under: Process analytics manuals (https://support.industry.siemens.com/cs/
products?dtp=Manual&mfn=ps&pnid=17702&lc=en-WW)
Due to the variety of technical details, it is not possible to consider every single detail for all
versions of the described product and for every conceivable case in the set-up, operation,
maintenance and use in systems. For further information, or in the case of problems which
are not covered in enough detail in this document, please request the required information
from your local or responsible Siemens regional o󹪟ce.
Note
In particular, before using the device for new research and development applications, we
recommend that you 󹪝rst contact us to discuss the application in question.
1.4 Special information and warnings
This manual provides you with information on commissioning, installing, operating, and
maintaining the device.
Pay particular attention to all special information and warnings. Information of this type is
set apart from the rest of the text and is marked with the corresponding pictograms. This
information provides you with useful tips and helps avoid operating errors.
1.5 Proper use
Proper use within the context of this manual means that the product may be used only for the
applications described in the catalog or the technical description, and only in combination with
the equipment, components and devices of other manufacturers recommended or permitted by
Siemens.
The product described in this manual has been developed manufactured, tested and
documented in compliance with relevant safety standards. When the handling rules
described for the con󹪝guration, installation, proper operation and maintenance, as well at
the safety guidelines are adhered to, therefore, there is normally no risk to the health of
persons or in respect to damage to property.
Introduction
1.5Proper use
Series 6 and ULTRAMAT 23
Compact Operating Instructions, 01/2024, A5E45779144002-AB 9

This device was designed to ensure safe isolation of the primary and secondary circuits. Low
voltages that are connected must therefore also be generated with safe isolation.
WARNING
Dangerous contact voltage
After removing the housing or protection against direct contact or after opening the system
cabinet, certain parts of this device/system will be exposed that can carry hazardous voltage.
Therefore, only appropriately quali󹪝ed persons are permitted to perform work within this
device. These persons must be thoroughly familiar with all sources of danger and service
activities in accordance with these operating instructions.
Note
Observe the environmental conditions for the rack unit and bench-top unit
Ensure compliance with the environmental conditions listed in the technical speci󹪝cations.
• During operation
• In the event of maintenance
Note
Environmental conditions for bench-top unit in accordance with IEC61010-1-2010
According to IEC 61010-1-2010, the bench-top unit may only be used indoors.
1.6 Quali󹪝ed Personnel
Quali󹪝ed personnel are individuals who are familiar with the installation, mounting,
commissioning, and operation of the product. These people have the following quali󹪝cations:
• They are authorized, trained or instructed in operating and maintaining devices and systems
according to the safety regulations for electrical circuits, high pressures and aggressive as
well as hazardous media.
• For explosion-proof devices: They are authorized, trained, or instructed in carrying out work
on electrical circuits for hazardous systems.
• They are trained or instructed in the maintenance and use of appropriate safety equipment
according to the safety regulations.
Introduction
1.6Quali󹪝ed Personnel
Series 6 and ULTRAMAT 23
10 Compact Operating Instructions, 01/2024, A5E45779144002-AB

1.7 Warranty conditions
We expressly point out that the product quality is exclusively and conclusively described in the
sales contract. The content of this product documentation is neither a part of a previous or
existing agreement, promise or legal relationship, nor is it intended to modify these. All
obligations on the part of Siemens AG are contained in the respective sales contract, which also
contains the complete and solely applicable liability provisions. The provisions de󹪝ned in the
sales contract for the responsibility for defects are neither extended nor limited by the remarks
in this document.
1.8 Delivery information
The respective scope of delivery is listed on the shipping documents in accordance with the valid
sales contract. These are enclosed with the delivery.
When opening the packaging, please observe the corresponding information on the
packaging material. Check the delivery for completeness and undamaged condition. In
particular, the Order No. on the labels, if present, must be compared with the ordering data.
If possible, please keep the packaging material since you can reuse it for return deliveries if
necessary.
1.9 Standards and regulations
As far as possible, the harmonized European standards have been applied to the speci󹪝cation
and production of this device. If no harmonized European standards have been referred to, the
standards and regulations for the Federal Republic of Germany are valid.
When this product is used beyond the scope of these standards and regulations, the
standards and regulations applicable in the operating company's country must be observed.
As per CSA, the ULTRAMAT23 is classi󹪝ed as C225206 and C225286 and certi󹪝ed according
to CSA accreditation to ISO/IEC17065 by the "Standards Council of Canada (SCC)". The
certi󹪝cate is valid for the versions with 120V/60Hz and 230V/60Hz.
1.10 Conformity with European directives
The product described in this document complies with the relevant harmonisation laws and its
amendments of the European Union.
Electromagnetic com‐
patibility EMC
2014/30/EU
Directive of the European Parliament and of the Council on the har‐
monisation of the laws of the Member States relating to electromag‐
netic compatibility
Explosion protection
directive
ATEX 2014/34/EU
Directive of the European Parliament and of the Council on the har‐
monisation of the laws of the Member States relating to equipment
and protective systems intended for use in potentially explosive at‐
mospheres
Introduction
1.10Conformity with European directives
Series 6 and ULTRAMAT 23
Compact Operating Instructions, 01/2024, A5E45779144002-AB 11

Low voltage directive
LVD 2014/35/EU
Directive of the European Parliament and of the Council on the har‐
monisation of the laws of the Member States relating to electrical
equipment designed for use within certain voltage limits on the mar‐
ket
Restriction of hazard‐
ous substances direc‐
tive RoHS 2011/65/EU
Directive of the European Parliament and of 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 speci󹪝c
device.
See also
Certi󹪝cates (https://www.siemens.com/analytics/certi󹪝cates)
Introduction
1.10Conformity with European directives
Series 6 and ULTRAMAT 23
12 Compact Operating Instructions, 01/2024, A5E45779144002-AB

Safety instructions 2
2.1 Cybersecurity information
Siemens provides products and solutions with industrial cybersecurity 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
cybersecurity 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 cybersecurity measures that may be implemented,
please visit
https://www.siemens.com/global/en/products/automation/topic-areas/industrial-
cybersecurity.html.
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 Cybersecurity
RSS Feed under
https://new.siemens.com/global/en/products/services/cert.html.
2.2 Prerequisites for safe 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 speci󹪝cations 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.
Series 6 and ULTRAMAT 23
Compact Operating Instructions, 01/2024, A5E45779144002-AB 13

Symbol Explanation of the symbols on the device
Consult operating instructions
Warning of hot surface
Warning of dangerous voltage
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 o󹪟ce 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.
NOTICE
Manipulation of the device
Physical access to the device enables undesired manipulations of the device. As a result of this,
the device can lose its measuring properties and become unusable.
• Ensure that the device is located in a protected area to which only authorized persons have
access.
• If no settings need be carried out, lock the device.
WARNING
Improper device modi󹪝cations
Risk to personnel, system, and environment can result from modi󹪝cations to the device,
particularly in hazardous areas.
• Only carry out modi󹪝cations that are described in the instructions for the device. Failure to
observe this requirement cancels the manufacturer's warranty and the product approvals.
Do not operate the device after unauthorized modi󹪝cations.
Safety instructions
2.2Prerequisites for safe use
Series 6 and ULTRAMAT 23
14 Compact Operating Instructions, 01/2024, A5E45779144002-AB

WARNING
Harmful gases
Danger to personnel, system and the environment can result from introducing harmful
(corrosive, 󹪞ammable and/or poisonous) gases into the device. If this should be required for the
measuring task of the device, you must take the following measures:
• Take into account the safety measures according to the German Occupational Safety Act
(Arbeitsschutzgesetz - ArbSchG) or similar national laws. These safety measures must be
coordinated with a local specialist. In particular, this includes measures to prevent any
potential release of gases from the internal gas path (containment system) as well as their
monitoring and disposal.
• Ensure that the discharged gas is treated according to the applicable local laws.
• Purge the device or the plant with a purging gas. The gas displaced by purging must be
collected using appropriate equipment and disposed of environmentally-friendly via an
exhaust line.
WARNING
Harmful substances in the condensate
The condensate at the sample gas cooler or condensation trap can be corrosive, depending on
the composition of the sample gas (e.g.: through SO2, NO, H2S, HCl, etc.). When you dip litmus
paper into the condensate it will turn red.
• Wear protective clothing, protective goggles and protective gloves when handling the
condensate!
• Prior to its disposal, dilute the condensate with tap water until it turns neutral and the litmus
paper does not change color. Alternatively, you can also neutralize the condensate with a
weak sodium carbonate solution (Na2CO3).
WARNING
Risk of explosion due to improper use
A device in the standard version must never be used in hazardous areas.
Observe the safety rules, 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)
Further provisions for hazardous area applications are for example:
• IEC60079-14 (international)
• EN60079-14 (EU and UK)
Safety instructions
2.2Prerequisites for safe use
Series 6 and ULTRAMAT 23
Compact Operating Instructions, 01/2024, A5E45779144002-AB 15

WARNING
Toxic and/or corrosive gases
When measuring toxic or corrosive gases, it could occur that sample gas accumulates in the
analyzer because of leaks in the gas path.
To prevent the danger of poisoning or damage to parts of the analyzer, the analyzer must be
purged. The gas displaced by purging must be collected using appropriate equipment and
disposed of environmentally-friendly via an exhaust line.
WARNING
Wetted parts unsuitable for the process medium
Danger of injury or damage to device.
Hot, toxic and aggressive process media may be released if the media is not suitable for wetted
parts of the analyzer.
• Ensure that the material of the device parts wetted by the process medium is suitable for the
medium. Read the information in the technical speci󹪝cations of the respective manual!
NOTICE
Use in home environment
This Class A Group 1 device according to CISPR 11 is intended for industrial use.
If used in homes, the device may cause radio interference.
WARNING
Insu󹪟cient protection during storage
The packaging only provides limited protection against moisture and in󹪝ltration.
• Provide additional packaging as necessary.
Safety instructions
2.2Prerequisites for safe use
Series 6 and ULTRAMAT 23
16 Compact Operating Instructions, 01/2024, A5E45779144002-AB

WARNING
Incorrect disassembly
The following risks may result from incorrect disassembly:
- Injury through electric shock
- Risk through emerging media when connected to the process
- Risk of explosion in hazardous area
In order to disassemble correctly, observe the following:
• Before starting work, make sure that you have switched o󹪜 all physical variables such as
pressure, temperature, electricity etc. or that they have a harmless value.
• If the device contains hazardous media, it must be emptied prior to disassembly. Make sure
that no environmentally hazardous media are released.
• Secure the remaining connections so that no damage can result if the process is started
unintentionally.
2.3 Analyzers in biogas plants outside the hazardous area
DANGER
Danger of poisoning
The ULTRAMAT 23 is used, among other things, for the measurement of hydrogen sul󹪝de
(hydrogen sul󹪝de, dihydrogen sul󹪝de, H2S).
Hydrogen sul󹪝de is highly toxic even in small concentrations! The odor threshold for hydrogen
sul󹪝de is very low at 0.02vpm (20vpb), but higher concentrations result in numbing of the
olfactory receptors in the nose so that the odor is no longer perceived. Persons exposed to this
gas in concentrations up to 100 vpm for several hours exhibit symptoms of poisoning such as
fatigue, headaches, lack of appetite, lack of concentration, irritation of the mucous
membranes of eyes and respiratory tract, and throat irritations.
Inhalation of H2S concentrations of 500 vpm longer than 30 minutes can cause fatal poisoning.
Concentrations above 1000vpm cause death within a few minutes, concentrations above
5000vpm cause death within a few seconds.
When using this device in plant where there may be high concentrations of H2S and you
therefore need to take following continual precautions to prevent the e󹪜ects of poisoning:
• Connect the gas outlet of the analyzer to a gas exhaust unit so that no gas can escape into
the environment.
• Before you begin maintenance on the analyzer, make sure that the H2S concentration in the
analyzer is close to 0 vpm. Before beginning work, always 󹪞ush the gas path of the analyzer
and the gas sampler with ambient air or nitrogen for a duration of about 10 minutes .
• Check for leaks in the analyzer at regular intervals.
Safety instructions
2.3Analyzers in biogas plants outside the hazardous area
Series 6 and ULTRAMAT 23
Compact Operating Instructions, 01/2024, A5E45779144002-AB 17

DANGER
Explosion hazard
When the device is used in biogas plants, you should expect that the sample gas will contain
methane (CH4), which forms explosive mixtures with oxygen or air in certain concentrations.
These conditions might occur under certain operating states of the plant. These operating
states are to be avoided in the plant.
2.4 Analyzers in hazardous areas
WARNING
Unsuitable device for the hazardous area
Danger of explosion.
• Only use equipment that is approved for use in the intended hazardous area and labelled
accordingly.
Safety instructions for explosion protection (ATEX, IECEx, FM, CSA)
The gas analyzer designed as a 19" rack unit must be installed in a separate enclosure having
IP54 degree of protection that meets the requirements in accordance with EN/IEC/CSA/UL
60079-0 and EN/IEC/CSA/UL 60079-7, if it is used in Zone 2 or Class I Division 2.
The device may only be used in an area with pollution degree 2 or better according to IEC
60664-1. Overvoltage protection must be available which is set to a value that does not
exceed 140% of the maximum nominal voltage value at the power supply terminals of the
device.
Connecting and disconnecting the plug-in connectors from live circuits is only permissible for
installation, maintenance or repair purposes if a potentially explosive gaseous atmosphere
can be ruled out.
You must only connect devices which do not generate sparks during normal operation
to non-intrinsically-safe circuits in Zone 2, and these must be suitable for operation in
hazardous areas of Zone 2 under the conditions prevailing at the place of operation.
The measuring function for the explosion protection is not part of the ex test report.
2.4.1 ULTRAMAT 23 IEC, ATEX, CSA, with option E20
The introduction of 󹪞ammable gases is not permitted for an ULTRAMAT 23 with order option E20.
Safety instructions
2.4Analyzers in hazardous areas
Series 6 and ULTRAMAT 23
18 Compact Operating Instructions, 01/2024, A5E45779144002-AB

2.4.2 ULTRAMAT 23 CSA general
The device is suitable for installation in devices which are permitted by CSA.
2.4.3 ULTRAMAT 23 CSA with option E21
The sample gas exhaust lines must terminate outside the hazardous area at a harmless location.
The sample gas exhaust line can also be returned to the sampling point.
Ensure that the device is operated without pressure at the sample gas outlet.
For the introduction of 󹪞ammable gases, purging with inert gas or comparable measures to
avoid an explosive atmosphere are recommended, because devices with seals are considered
devices with limited release according to international standards.
WARNING
Risk of explosion due to accumulation of 󹪞ammable gases
When the device is installed in an enclosure, an air exchange rate of at least once per hour must
be ensured.
WARNING
Flammable components in sample gas
If the sample gas could contain 󹪞ammable components, we recommend that you only use
devices with option - E21.
2.4.4 Safety instructions for the introduction of combustible gases
The maximum permissible sample gas pressure in the analyzer depends on the device version
and is described in the section Technical speci󹪝cations (Page51) under the item "Gas inlet
conditions".
You must perform a leak test following all installation and maintenance work a󹪜ecting the
containment system.
This leak test must be performed at regular intervals.
Safety instructions
2.4Analyzers in hazardous areas
Series 6 and ULTRAMAT 23
Compact Operating Instructions, 01/2024, A5E45779144002-AB 19

2.4.5 CALOMAT 6E
DANGER
Explosion hazard
Frequently or permanently explosive gas mixtures must not be connected.
Rarely or occasionally explosive gas mixtures may be connected in accordance with the special
conditions speci󹪝ed in the corresponding certi󹪝cates.
Ensure that no absolute sample gas pressures higher than 1.1bar (110kPa) can occur.
During installation in a control cabinet, an air exchange ratio of at least 1/h has to be ensured
through corresponding ventilation measures.
If the sample gases may occasionally be explosive, suitable 󹪞ame arrestors have to be
installed in the sample gas inlet and outlet lines of the CALOMAT 6E gas analyzer. A 󹪞ame
arrestor can be omitted at the outlet of the device if the sample gas is routed into a
non-hazardous area. When discharging the exhaust gas into an explosion-free area, a 󹪞ame
arrestor at the device outlet can be dispensed with.
2.5 Measurement of oxygen in hydrogen with Oxymat 6E
NOTICE
Explosive gas mixtures
Gas mixtures of hydrogen H2 in oxygen O2 are explosive in a wide range. At an atmospheric
pressure of 1000 hPa and 20 °C ambient temperature, the lower explosive limit (LEL) lies at 4 %
H2 in O2, the upper explosive limit (UEL) at 95.2 % H2 in O2. At an ambient temperature of 80 °C
the LEL lies at 3.8% H2 in O2, the UEL lies at 95.4% H2 in O2.
In general, a distinction is made between the following cases at the occurrence of explosive
gas mixtures:
• Frequently or constantly explosive - more than 1000hours/year
• Occasionally explosive - 10 to 1000hours/year
• Rarely explosive - less than 10hours/year
Safety instructions
2.5Measurement of oxygen in hydrogen with Oxymat 6E
Series 6 and ULTRAMAT 23
20 Compact Operating Instructions, 01/2024, A5E45779144002-AB