ABB AO2000 Series User manual

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ABB MEASUREMENT & ANALYTICS | OPERATING INSTRUCTION
AO2000
Continuous gas analyzers
Integrated analyzer system
Measurement made easy

AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B 3
Contents
Preface ....................................................................................................................................................................9
Guideline for installation and commissioning .................................................................................................. 11
Safety information...............................................................................................................................................12
Intended application.................................................................................................12
Special requirements for the operator ..................................................................12
Safety information ....................................................................................................13
Fidas24: Information on the safe operation of the gas analyzer......................15
Notes for network and data security .....................................................................17
Version with type of protection II 3G for measurement of non-flammable gases and vapors....................18
Version with type of protection II 3G for measurement of flammable gases ('Safety Concept')
and non-flammable gases .................................................................................................................................. 20
Intended application................................................................................................ 20
Important information for the operator ...............................................................21
Description..................................................................................................................23
Internal and external explosion protection.......................................................... 24
Technical data ........................................................................................................... 25
Special requirements for operation .......................................................................27
Limas11 IR, Uras26: Version for the 'Safety Concept'......................................... 28
Caldos25, Caldos27, Magnos206: Version for the 'Safety Concept' ................ 30
Purge gas flow monitoring ......................................................................................32
Version for use in Class I Div. 2 explosion hazard areas...................................................................................33
Preparation for installation ............................................................................................................................... 34
Scope of supply and delivery .................................................................................. 34
Material required for the installation (not supplied) ......................................... 35
Installation location...................................................................................................37
Pressure sensor......................................................................................................... 39
Housing purge...........................................................................................................40
Power supply ............................................................................................................. 42
Caldos25: Preparation for installation.................................................................. 44
Caldos27: Preparation for installation .................................................................. 46
Fidas24: Preparation for installation .................................................................... 48
Fidas24 NMHC: Preparation for installation.........................................................51
Limas11 IR, Limas21 UV: Preparation for installation ......................................... 54
Limas21 HW: Preparation for installation............................................................. 57
Magnos206: Preparation for installation ............................................................. 59
Magnos28: Preparation for installation.................................................................61
Magnos27: Preparation for installation ................................................................ 63
Uras26: Preparation for installation...................................................................... 65
ZO23: Preparation for installation ......................................................................... 67
Oxygen sensor: Preparation for installation.........................................................71

4 AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B
Unpacking the gas analyzer and installation ....................................................................................................73
Unpacking the gas analyzer.....................................................................................73
Identification plate................................................................................................... 74
Analyzer data sheet .................................................................................................. 75
Dimensional diagrams............................................................................................. 76
Gas connection installation .................................................................................... 78
Gas analyzer installation.......................................................................................... 79
Gas line connection............................................................................................................................................. 80
Caldos25: Gas connections..................................................................................... 80
Caldos27: Gas connections ..................................................................................... 82
Fidas24, Fidas24 NMHC: Gas and electrical connections.................................. 83
Limas11 IR, Limas21 UV, Limas21 HW: Gas connections .................................... 84
Magnos206: Gas connections ................................................................................ 88
Magnos28: Gas connections................................................................................... 89
Magnos27: Gas connections ....................................................................................91
Uras26: Gas connections......................................................................................... 93
ZO23: Gas connections ............................................................................................ 95
Gas line connection .................................................................................................. 96
Fidas24: Connecting the gas lines......................................................................... 97
Fidas24: Connecting the combustion gas line .................................................. 100
Fidas24: Connecting the sample gas line
(heated sample gas connection) ..........................................................................101
Fidas24: Connecting the sample gas line
(unheated sample gas connection)..................................................................... 105
Connecting the electrical leads ........................................................................................................................107
Electronics module connection diagram............................................................ 107
Profibus module: Electrical connections............................................................ 108
Modbus module: Electrical connections............................................................. 109
Analog output module: Electrical connections ..................................................110
Analog input module: Electrical connections ..................................................... 111
Digital I/O module: Electrical connections ......................................................... 112
Standard terminal connections ............................................................................114
Connecting the signal lines....................................................................................116
System bus connection ..........................................................................................118
Power supply line connection – Safety notes ..................................................... 121
Power supply line connection to an analyzer module .......................................122
Power supply line connection................................................................................124
Fidas24: Power supply line connection................................................................125
Gas analyzer start-up.........................................................................................................................................126
Installation check.....................................................................................................126
Gas path and housing initial purge ......................................................................127
Power supply activation .........................................................................................128
Fidas24: Gas analyzer start-up..............................................................................129
Limas21 HW: Gas analyzer start-up ......................................................................133
ZO23: Gas analyzer start-up.................................................................................. 134
Warm-up phase ........................................................................................................135
Operation ..................................................................................................................136

AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B 5
Gas analyzer operation......................................................................................................................................138
Display and control unit..........................................................................................138
Screen ........................................................................................................................139
Message display...................................................................................................... 140
Status LEDs...............................................................................................................141
Numeric keypad .......................................................................................................142
Cancel keys............................................................................................................... 143
Softkeys.................................................................................................................... 144
Text entry ................................................................................................................. 146
Operating by value entry ........................................................................................147
Operating by key entry .......................................................................................... 148
Password protection.............................................................................................. 149
User interface priority.............................................................................................151
Access lock................................................................................................................152
Menu tree ..................................................................................................................153
Gas analyzer configuration: Measurement component-specific functions .................................................155
Measurement range configuration ......................................................................155
Auto-ranging parameterization ............................................................................161
Limit value monitor parameterization.................................................................162
Filter parameterization...........................................................................................163
Active component selection ................................................................................. 164
Configuring a component..................................................................................... 165
Changing module name..........................................................................................179
Gas analyzer configuration: Function blocks ................................................................................................. 180
The 'Function blocks' concept .............................................................................. 180
Standard configuration ..........................................................................................181
The 'Function blocks' sub-menu............................................................................182
Gas analyzer configuration: System functions ...............................................................................................183
Setting the time zone, date and time ..................................................................183
Selecting user interface language ....................................................................... 184
Changing the password ........................................................................................ 185
Inhibit operation ..................................................................................................... 186
Setting up system modules ...................................................................................187
Adding a system module....................................................................................... 189
Replacing a system module .................................................................................. 190
Removing a system module...................................................................................191
Saving the configuration........................................................................................192
Configuring status signals.....................................................................................193
Configuring an Ethernet connection................................................................... 194
Configuring a Modbus connection...................................................................... 195
Configuring Profibus.............................................................................................. 196
Configuring Bus I/Os ..............................................................................................197
Gas analyzer configuration: Display.................................................................................................................198
Display features ...................................................................................................... 198
Display overview .....................................................................................................200
Page overview.......................................................................................................... 201

6 AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B
Parameter overview................................................................................................ 202
User page configuration ....................................................................................... 203
Moving a display element from one page to another ...................................... 204
Moving a display element within a page ............................................................ 205
Configuring the bar display or point display..................................................... 206
Value entry ............................................................................................................... 207
Configuring value entry .........................................................................................208
Key entry................................................................................................................... 209
Configuring key entry ............................................................................................ 210
Example: Entering and displaying the pump output ........................................ 211
Calibration: Principles .......................................................................................................................................213
Calibration control...................................................................................................213
Manual calibration ...................................................................................................214
Automatic calibration .............................................................................................216
Test gas supply control for automatic calibration............................................219
Externally controlled calibration...........................................................................222
Calibration methods .............................................................................................. 223
Gas analyzer configuration: Calibration data .................................................................................................225
The 'Calibration data' sub-menu.......................................................................... 225
Calibration data for manual calibration ............................................................. 226
Calibration data for automatic calibration.........................................................227
Validation ................................................................................................................. 230
Calibration data for externally controlled calibration.......................................231
Output current response....................................................................................... 232
Notes for calibrating analyzer modules...........................................................................................................233
Caldos25: Notes for calibrating ........................................................................... 233
Caldos27: Notes for calibrating............................................................................ 234
Caldos27: Single-point calibration with standard gas..................................... 235
Caldos25, Caldos27: Substitute gas calibration ................................................237
Fidas24: Notes for calibrating.............................................................................. 238
Fidas24 NMHC: Notes for calibrating ..................................................................241
Fidas24: Substitute gas calibration .................................................................... 244
Fidas24: Response factor and other relevant variables .................................. 245
Fidas24: Conversion of concentration data....................................................... 247
Limas11 IR, Limas21 UV, Limas21 HW: Notes for calibrating........................... 249
Magnos206: Notes for calibrating........................................................................251
Magnos206: Single-point calibration.................................................................. 252
Magnos206: Substitute gas calibration ............................................................. 254
Magnos28: Notes for calibrating ......................................................................... 255
Magnos28: Single-point calibration .................................................................... 256
Magnos28: Substitute gas calibration................................................................ 258
Magnos27: Notes for calibrating ......................................................................... 259
Magnos27: Substitute gas calibration ................................................................ 260
Uras26: Notes for calibrating ................................................................................261
ZO23: Check of the end point and reference point .......................................... 263
Oxygen sensor: Notes for calibrating ................................................................. 264

AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B 7
Calibrating the gas analyzer ............................................................................................................................ 265
Gas analyzer manual calibration .......................................................................... 265
Manual start of the automatic calibration......................................................... 266
Inspection and maintenance.............................................................................................................................267
Inspection ................................................................................................................ 267
Checking gas path seal integrity ......................................................................... 268
Pump activation, pump output adjustment ...................................................... 269
Changing analog output current range.............................................................. 270
Air pressure correction ...........................................................................................271
Air pressure value correction.................................................................................272
Calibration reset ......................................................................................................273
Basic calibration...................................................................................................... 274
Cross sensitivity alignment .................................................................................. 275
Carrier gas alignment ............................................................................................ 276
Fidas24: Standby / Restart ....................................................................................277
Fidas24: Replacement of the sample gas filter in the heated sample
gas connection........................................................................................................ 279
Fidas24: Cleaning the air jet injector ...................................................................281
Fidas24: Checking the combustion gas supply line for seal integrity .......... 283
Fidas24: Checking the combustion gas feed path in the gas analyzer
for seal integrity...................................................................................................... 285
Fidas24 NMHC: Converter effectiveness testing.............................................. 286
Uras26: Optical alignment..................................................................................... 287
Uras26: Phase alignment.......................................................................................290
Limas11 IR, Limas21 UV, Limas21 HW, Uras26: Measurement of
calibration cells ........................................................................................................291
Limas11 IR, Limas21 UV, Limas21 HW, Uras26: Relinearization....................... 292
Limas11 IR, Limas21 UV, Limas21 HW: Thermal link replacement .................. 293
Limas11 IR, Limas21 UV: Aluminum sample cell cleaning................................. 294
Limas11 IR, Limas21 UV, Limas21 HW: Quartz sample cell cleaning............... 297
Limas11 IR, Limas21 UV: Safety cell cleaning......................................................300
Limas21 UV, Limas21 HW: Lamp (EDL) replacement ........................................ 307
Limas11 IR, Limas21 UV, Limas21 HW: Amplification optimization................ 310
ZO23: Function test.................................................................................................312
Pneumatic module: Disposable filter replacement .......................................... 314
Status messages, troubleshooting ..................................................................................................................315
Dynamic QR code.....................................................................................................315
Process status..........................................................................................................317
System status: Status messages..........................................................................318
System status: Status signals ...............................................................................319
Status message categories .................................................................................. 320
Status messages..................................................................................................... 322
Gas analyzer: Troubleshooting............................................................................. 332
Caldos25, Caldos27, Magnos206, Magnos28, Magnos27: Troubleshooting 334
Fidas24: Troubleshooting ..................................................................................... 335
Limas11 IR, Limas21 UV, Limas21 HW: Troubleshooting .................................. 339
Uras26: Troubleshooting.......................................................................................340

8 AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B
Pneumatic module: Troubleshooting.................................................................. 341
Notify service........................................................................................................... 342
Gas analyzer shutdown and packing................................................................................................................343
Gas analyzer shutdown.......................................................................................... 343
Packing the gas analyzer .......................................................................................344
Disposal .................................................................................................................... 345
Analyzer modules operating specifications ................................................................................................... 346
Caldos25: Operating specifications .................................................................... 346
Caldos27: Operating specifications .................................................................... 347
Fidas24, Fidas24 NMHC: Operating specifications..........................................348
Limas11 IR, Limas21 UV: Operating specifications ...........................................349
Limas21 HW: Operating specifications............................................................... 350
Magnos206: Operating specifications ................................................................351
Magnos28: Operating specifications.................................................................. 352
Magnos27: Operating specifications .................................................................. 353
Uras26: Operating specifications ........................................................................ 354
ZO23: Operating specifications ........................................................................... 355
Oxygen sensor: Operating specifications.......................................................... 356
Index ....................................................................................................................................................................357

AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B 9
Preface
Content of this operating instruction
This operating instruction contains all the information necessary for the
safe and compliant installation, start-up, operation, calibration, configura-
tion and maintenance of the gas analyzer.
NOTE
Descriptions and instructions for the Fidas24 analyzer module in this oper-
ating instruction generally also apply for the Fidas24 NMHC analyzer module.
Divergent and supplementary descriptions and instructions for the Fidas24
NMHC analyzer module are added if applicable.
Additional documentation
Title Publication No.
AO2000 Series Continuous gas analyzers –
Data sheet
DS/AO2000-EN
Function blocks: Descriptions and configuration –
Technical information
30/24-200 EN
AO-HMI Remote control interface –
Technical information
30/24-311 EN
AO2000 Series PROFIBUS DP/PA interface –
Technical information
30/24-315 EN
AO2000 Modbus and AO-MDDE –
Technical information
30/24-316 EN
AO2000-LS25 Laser analyzer module –
Commissioning instruction
CI/AO2000-LS25-EN

10 AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B
Further information
Analyzer data sheet
The version of the delivered gas analyzer is described in the "Analyzer data
sheet" supplied with the gas analyzer.
DVD-ROM "Software tools and technical documentation"
The DVD-ROM "Software tools and technical documentation" with the fol-
lowing contents is included in the scope of supply of the gas analyzer:
•Software tools
•Operating instructions
•Data sheets
•Technical information
•Certificates
Internet
You will find information on ABB Analytical products and services on the
Internet at "http://www.abb.com/analytical".
Service contact
If the information in this operating instruction does not cover a particular
situation, ABB Service will be pleased to supply additional information as
required.
Please contact your local service representative. For emergencies, please
contact
ABB Service,
Telephone: [phone], Telefax: [phone] 29031,
E-mail: [e-mail]
Symbols and typefaces in this instruction
ATTENTION identifies safety information to be heeded during gas analyz-
er operation, in order to avoid risks to the user.
NOTE identifies specific information on the operation of the gas analyzer as
well as on the use of this instruction.
1, 2, 3, … Identifies reference numbers in figures.
Display Identifies a display on the screen.
Input Identifies a user entry
•either by pressing a soft key
•or by selecting a menu item
•or via the numeric keypad
Function block Identifies a function block designation.
'Name' Identifies a function block name assigned by the gas
analyzer or entered by the user.
peGauge pressure
pabs Absolute pressure
pamb Atmospheric pressure

AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B 11
Guideline for installation and commissioning
Basic steps
The following basic steps should be followed for the installation and com-
missioning of the gas analyzer:
1Note the information on the intended application (see page 12).
2Follow safety precautions (see page 13).
3Prepare for the installation, provide the requisite material (see page 34).
4Unpack the gas analyzer (see page 73).
5Check gas path seal integrity (see page 268).
6Install the gas analyzer (see page 79).
7Connect the gas lines (see page 80).
8Connect the electrical leads (see page 107).
9Check the Installation (see page 126).
10 Purge the gas paths and housing (see page 127).
11 Start-up the gas analyzer (see page 128).

12 AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B
Safety information
Intended application
Intended application
The AO2000 Series gas analyzers are designed for continuous measurement
of the concentration of individual components in gases or vapors.
Any other use is not as specified.
The specified use also includes taking note of this operating instruction.
The AO2000-Fidas24 and Fidas24 NMHC gas analyzers may not be used for
the measurement of ignitable mixtures during normal service. Special
measures must be taken to prevent an explosion hazard during the meas-
urement of flammable gas which can form an explosive mixture in associa-
tion with air or oxygen.
The AO2000 Series gas analyzers as well as the models with type of protec-
tion II 3G for measurement of non-flammable gases and vapors must not be
used for measurement of explosive mixtures. Explosion-protected models of
the gas analyzers are available for this application.
Please note the information on intended application for versions
•with type of protection II 3G for measurement of non-flammable gases
and vapors (see page 18),
•with type of protection II 3G for measurement of flammable and
non-flammable gases (see page 20) and
•for use in Class I Div. 2 explosion hazard areas (see page 33).
Special requirements for the operator
Special requirements for the operator
•The operator must ensure that the gas analyzer is operated only with a
sample gas mixture in which the concentration of flammable sample gas
is below the LEL.
•No explosive gas mixture may be introduced into the gas analyzer –
taking into account pressure, temperature and gas matrix.
•Before commissioning the gas analyzer, the sample gas path must be
purged to remove any potentially explosive gas mixtures from the sam-
ple gas path.
•The operator is obliged to subject the gas analyzer to a leak test at reg-
ular intervals, but at least once a year and after any work on the sample
gas path.
•The operator must ensure that when the gas analyzer is switched off,
the sample gas supply is interrupted and the sample gas path is purged
with compressed air or an inert gas.

AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B 13
Safety information
Requirements for safe operation
In order to operate in a safe and efficient manner the device should be
properly handled and stored, correctly installed and set-up, properly oper-
ated and correctly maintained.
Personnel qualifications
Only persons familiar with the installation, set-up, operation and mainte-
nance of comparable devices and certified as being capable of such work
should work on the device.
Special information and precautions
These include
•The content of this operating instruction,
•The safety information affixed to the device,
•The applicable safety precautions for installing and operating electrical
devices,
•Safety precautions for working with gases, acids, condensates, etc.
National regulations
The regulations, standards and guidelines cited in this operating instruction
are applicable in the Federal Republic of Germany. The applicable national
regulations should be followed when the device is used in other countries.
Device safety and safe operation
The device is designed and tested in accordance with the relevant safety
standards and has been shipped ready for safe operation. To maintain this
condition and to assure safe operation, read and follow the safety infor-
mation in this operating instruction. Failure to do so can put persons at risk
and can lead to device damage as well as damage to other systems and
devices.
Protective lead connection
The protective lead (ground) should be attached to the protective lead con-
nector before any other connection is made.
Risks of a disconnected protective lead
The device can be hazardous if the protective lead is interrupted inside or
outside the device or if the protective lead is disconnected.
Risks involved in opening the covers
Current-bearing components can be exposed when the covers or parts are
removed, even if this can be done without tools. Current can be present at
some connection points.
Risks involved in working with an open device
All work on a device that is open and connected to power should only be
performed by trained personnel who are familiar with the risks involved.

14 AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B
When safe operation can no longer be assured
If it is apparent that safe operation is no longer possible, the device should
be taken out of operation and secured against unauthorized use.
The possibility of safe operation is excluded:
•If the device is visibly damaged,
•If the device no longer operates,
•After prolonged storage under adverse conditions,
•After severe transport stresses.

AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B 15
Fidas24: Information on the safe operation of the gas analyzer
CAUTION
The gas analyzer uses hydrogen as a combustion gas!
All the information and instructions contained in this operating instruc-
tion must be complied with without fail to ensure safe operation of the
gas analyzer!
Measures of the manufacturer
The following measures ensure that the enrichment of combustion gas or an
explosive mixture of combustion gas and ambient air cannot occur inside
the gas analyzer during normal operation:
•The seal integrity of the combustion gas feed path is checked for a
leakage rate of < 1 × 10−4hPa l/s before delivery.
•The combustion gas/air mixture (before and after the ignition point) is
diluted in the detector with compressed air.
•The combustion gas feed is not connected to the supply during start-up
until the internal nominal pressures have been set.
•The combustion gas feed is switched off if the internal nominal pres-
sures cannot be set during the ignition phase (e.g. because of insuffi-
cient compressed air or combustion air feed).
•The combustion gas feed is switched off after several unsuccessful igni-
tion attempts.
•If the flame goes out during operation the combustion gas feed is
switched off if the following ignition attempts are unsuccessful.
The interior of the gas analyzer is not assigned to an (explosion protection)
zone; no explosive gas mixture can escape from it to the outside.
Conditions to be complied with by the end user
The end user must comply with the following prerequisites and conditions
to ensure safe operation of the gas analyzer:
•The gas analyzer may be used for the measurement of flammable gases
provided that the flammable portion does not exceed the following limit
values:
Fidas24: 15 vol.% CH4or C1 equivalents,
Fidas24 NMHC: 5 vol.% CH4or C1 equivalents.
•The relevant safety regulations for working with flammable gases must
be complied with.
•The gas connection diagram (see page 83) must be complied with when
connecting the combustion gas and combustion air.
•The combustion gas feed path in the gas analyzer may not be opened!
The combustion gas feed path can become leaky as a result! Escaping
combustion gas can cause fires and explosions, also outside the gas an-
alyzer!
•If the combustion gas feed path in the gas analyzer has been opened,
however, it must always be checked for seal integrity (see page 285)
with a leak detector after it has been sealed again (leakage rate
< 1 × 10−4hPa l/s).
•The seal integrity of the combustion gas line (see page 283) outside the
gas analyzer and the combustion gas feed path (see page 285) in the gas
analyzer must be checked on a regular basis.
•The maximum pressures of combustion gas and combustion air (see
page 48) may not be exceeded.

16 AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B
•The maximum combustion gas flow (see page 48) may not be exceeded.
•The combustion gas flow rate must be limited to a maximum of
10 l/h of H2or 25 l/h of H2/He mixture. For this purpose, the end user
has to provide suitable measures (see page 48) outside the gas analyzer.
•A shut-off valve (see page 48) must be installed in the combustion gas
supply line to increase the safety in the following operating states:
•Shutting down the gas analyzer,
•Failure of the instrument air supply,
•Leakage in the combustion gas feed path inside the gas analyzer.
This shut-off valve should be installed outside the analyzer house in the
vicinity of the combustion gas supply (cylinder, line).
•If there is no automatic shut-off of the combustion gas supply to the
gas analyzer in case of an instrument supply failure, a visible or audible
alarm must be triggered (see page 335).
•When measuring flammable gases, it must be made sure that in case of
a failure of the instrument air supply or of the analyzer module itself the
sample gas supply to the analyzer module is shut off and the sample gas
path is purged with nitrogen.
•The unobstructed exchange of air with the environment must be possi-
ble around the gas analyzer. The gas analyzer may not be directly cov-
ered. The openings in the housing towards the top and at the side may
not be closed. The distance to laterally adjacent built-in components
must be at least 4 mm.
•If the gas analyzer is installed in a closed cabinet, adequate ventilation
of the cabinet must be provided (at least 1 change of air per hour). The
distance to adjacent built-in components towards the top and at the
side must be at least 4 mm.

AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B 17
Notes for network and data security
Customer's responsibility
The gas analyzer is designed to be connected to and to communicate infor-
mation and data via a network interface.
It is the customer's sole responsibility to provide and continuously ensure a
secure connection between the gas analyzer and the customer’s network or
any other network (as the case may be). The customer shall establish and
maintain any appropriate measures (such as but not limited to the installa-
tion of firewalls, application of authentication measures, encryption of data,
installation of anti-virus programs, etc.) to protect the product, the network,
its system and the interface against any kind of security breaches, unau-
thorized access, interference, intrusion, leakage and/or theft of data or in-
formation.
ABB Ltd and its affiliates are not liable for damages and/or losses related to
such security breaches, any unauthorized access, interference, intrusion,
leakage and/or theft of data or information.
Active services and open ports on the Ethernet interface
22/tcp Used for software update only. No direct access to the device.
502/tcp Used for Modbus/TCP. The device allows any Modbus client to
connect, there is no access restriction to authorized clients only.
8001/tcp Used for Test and Calibration Software. Binary, proprietary pro-
tocol.
Modbus and PROFIBUS interfaces
The customer shall be aware that Modbus and PROFIBUS protocols are in-
secure protocols.
Access credentials
Access to the calibration and to the menus used to change the configuration
of the instrument is restricted by password protection (see page 149).
It is recommended to change the factory-set passwords.

18 AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B
Version with type of protection II 3G for measurement of
non-flammable gases and vapors
Intended application
The AO2000 Series gas analyzers with analyzer modules Uras26, Magnos206,
Magnos27, Caldos25 and Caldos27 with type of protection II 3G have been
tested for explosion protection and are suitable for use in hazardous areas
in compliance with the technical data (see page 37) and the special condi-
tions for operation (see below). They are suitable for continuous measure-
ment of the concentration of individual components in non-flammable gases
or vapors.
Any other use is not as specified.
The specified use also includes taking note of this operating instruction.
Important safety note
According to EU Directive 2014/34/EU and the general requirements for
equipment installed in explosive atmospheres stated in IEC 60079-0, the
scope of the certification of our equipment is limited to atmospheric condi-
tions, unless specified otherwise in our certificates.
Atmospheric conditions are defined as follows:
•Temperature range −20 to +60 °C
•Pressure range pabs = 80 to 110 kPa (0.8 to 1.1 bar)
•Ambient air with normal oxygen content, typically 21 % v/v
If the atmospheric conditions are not met, the operator is obliged to ensure
the safe operation of our equipment outside the atmospheric conditions by
means of further measures (for example, assessment of the gas mixture)
and / or supplementary protection devices.
Description
The explosion-protected version with type of protection II 3G for the meas-
urement of non-flammable gases and vapors is a special version of the
AO2000 Series gas analyzers.
This version is different from other versions by the following designation on
the identification plate:
II 3G Ex nA nC IIC T4 Gc
Operating the gas analyzer under regular conditions cannot cause any ig-
nitable sparks, arcs or impermissible temperatures inside the device.
NOTE
For further information please refer to the Declaration of Conformity. The
Declaration of Conformity can be found on the DVD-ROM "Software tools
and technical documentation" which is delivered together with the gas ana-
lyzer.

AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B 19
Special requirements for operation
•The gas analyzer must be switched off if it is obviously faulty (is not
operating smoothly).
•The connectors may not be plugged in or unplugged while the power is
on.
•The gas analyzer housing may not be opened while the power is on.
•In order to comply with degree of case protection IP54,
•Cables have to be properly inserted in the screwed cable glands and
sealed by screwing the nut firmly,
•Cable connectors not in use have to be closed with suitable vent
plugs,
•System bus and 24 VDC power supply terminals not in use have to be
closed with the provided seals.
•Only the original battery types Varta CR2032 type no. 6032 or Renata
type no. CR2032 MFR may be used as replacement for the battery on the
system controller.

20 AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B
Version with type of protection II 3G for measurement of
flammable gases ('Safety Concept') and non-flammable
gases
Intended application
Intended application
The gas analyzers are designed for continuous measurement of the concen-
tration of individual components in
•non-flammable gases and vapors,
•flammable gases and vapors of Group IIC and Temperature Class T4,
which can seldom and then only briefly form a potentially explosive at-
mosphere (zone 2).
Any other use is not as specified.
The specified use also includes taking note of this operating instruction.
Important safety note
According to EU Directive 2014/34/EU and the general requirements for
equipment installed in explosive atmospheres stated in IEC 60079-0, the
scope of the certification of our equipment is limited to atmospheric condi-
tions, unless specified otherwise in our certificates.
Atmospheric conditions are defined as follows:
•Temperature range −20 to +60 °C
•Pressure range pabs = 80 to 110 kPa (0.8 to 1.1 bar)
•Ambient air with normal oxygen content, typically 21 % v/v
If the atmospheric conditions are not met, the operator is obliged to ensure
the safe operation of our equipment outside the atmospheric conditions by
means of further measures (for example, assessment of the gas mixture)
and / or supplementary protection devices.