Emerson Process Management (Rosemount Analytical) designs, manufactures and
tests its products to meet many national and international standards. Because these
instruments are sophisticated technical products, you MUST properly install, use, and
maintain them to ensure they continue to operate within their normal specications.
The following instructions MUST be adhered to and integrated into your safety program
when installing, using and maintaining Emerson Process Management (Rosemount
Analytical) products. Failure to follow the proper instructions may cause any one of the
following situations to occur: Loss of life; personal injury; property damage; damage to
this instrument; and warranty invalidation.
• Read all instructions prior to installing, operating, and servicing the product.
• If you do not understand any of the instructions, contact your Emerson Process
Management (Rosemount Analytical) representative for clarication.
• Follow all warnings, cautions, and instructions marked on and supplied with the
product.
• Inform and educate your personnel in the proper installation, operation, and
maintenance of the product.
• Install your equipment as specied in the Installation Instructions of the
appropriate Instruction Manual and per applicable local and national codes.
Connect all products to the proper electrical and pressure sources.
• To ensure proper performance, use qualied personnel to install, operate, update,
program, and maintain the product.
• When replacement parts are required, ensure that qualied people use replacement
parts specied by Emerson Process Management (Rosemount Analytical).
Unauthorized parts and procedures can affect the product’s performance, place the
safe operation of your process at risk, and VOID YOUR WARRANTY. Look-alike
substitutions may result in re, electrical hazards, or improper operation.
• Ensure that all equipment doors are closed and protective covers are in place,
except when maintenance is being performed by qualied persons, to prevent
electrical shock and personal injury.
The information contained in this document is subject to change without notice.
X-STREAM and IntrinzX are marks of one of the Emerson group of companies.
All other marks are property of their respective owners.
6th edition, 10/2012
Emerson Process Management GmbH & Co. OHG
Rosemount Analytical
Process Gas Analyzer Center of Excellence
Industriestrasse 1
63594 Hasselroth
Germany
T +49 6055 884 0
F +49 6055 884 209
Instruction Manual
HASXEE-IM-HS
10/2012
SHORT FORM GUIDE FOR THIS MANUAL
X-STREAM XE
To nd information about see chapter
Safety instructions ...........................S
The different instruments designs
The instruments technical data
Measuring principles characteristics
How to install the instruments
st
startup procedures,
1
..............1
.................2
............3
.................4
checking the instrument´s setup ...............5
Software menu structure, how to navigate
and menu entries descriptions
Basic procedures (e.g. calibration)
.................6
..............7
Table of contents
TOC
Maintenance procedures
Status messages and troubleshooting
Modbus parameters
Service information
..........................9
..........................10
Dismounting and disposal of instruments
Block diagrams, terminals & connectors
Index
Emerson Process Management GmbH & Co. OHG TOC-1
.....................................IDX
......................7
..........8
........11
..... Appendix
Instruction Manual
X-STREAM XE
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Tableof ConTenTs
Introduction S-1
Denitions S-1
Terms Used in This Instruction Manual .........................................S-2
Symbols Used on and Inside the Unit
Symbols Used in This Manual
The instruction manual contains information about the component assembly, function,
installation, operation and maintenance of the X-STREAM® Enhanced series gas analyzers.
The manual covers several X-STREAM analyzer models and so may contain information
about congurations and/or options not applicable to your analyzer.
The installation and operation of units for use in explosive (hazardous) environments is
not covered in this manual.
Analyzers intended to be used in such environments are supplied with further instruction
manuals, which should be consulted in addition to this.
DEFINITIONS
The following denitions apply to the terms WARNING, CAUTION and NOTE, and the symbol , as used in this manual.
Indicates an operational or maintenance procedure, a process, a condition,
an instruction, etc.
Failure to comply may result in injury, death or permanent health risk.
Safety Instructions
S
Indicates an operational or maintenance procedure, a process, a condition,
an instruction, etc.
Failure to comply may result in damage to or destruction of the instrument,
or impaired performance.
NOTE!
Indicates an imperative operational procedure, an important condition or instruction.
The symbol
refers to more information, provided on the indicated page or chapter.
Emerson Process Management GmbH & Co. OHG S-1
, together with a page number ( 6-5 ) or chapter headline ( Startup )
X-STREAM XE
TERMS USED IN THIS INSTRUCTION MANUAL
Instruction Manual
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Explosive Gas(es)
Flammable Gases and gas mixtures in a mixture with air within the explosive limits.
Flammable Gas(es)
Gases and gas mixtures are assigned to be
ammable if they might become ignitable
when in a mixture with air.
Infallible Containment
This term is derived from the standards of
explosion protection especially from the requirements for pressurized housings: thus an
infallible containment can be characterized
by no intended leakage out of the gas paths
enabling gas to enter the inner compartment
of the analyzer housing.
Intrinsically Safe Cell (IS Cell)
Cells supplied with an intrinsically safe power
signal, approved by a Test Institute, to operate
with explosive gases.
The design ensures the IS cells remains safe
even in case of failure and explosive gases
are not ignited.
Protection Class IP66 / NEMA 4X
Both terms are used to specify conditions for
equipment to be installed outdoor.
IP stands for Ingress Protection, the rst num-
ber species protection against solid objects
(6. = dust tight) while the second number
species the degree of protection against
liquids (.6 = heavy seas).
NEMA stands for National Electrical Manuf-
acturers Association. 4X species a degree
of protection to personnel against incidental
contact with the enclosed equipment; to provide a degree of protection against falling dirt,
rain, sleet, snow, windblown dust, splashing
water, and hose-directed water; and that will
be undamaged by the external formation of
ice on the enclosure
Upper Explosion Limit (UEL)
Volume ratio of ammable gas in air above
which an explosive gas atmosphere will not
be formed: the mixture of gas and air is too
rich in fuel (decient in oxygen) to burn.
Lower Explosion Limit (LEL)
Volume ratio of ammable gas in air below
which an explosive gas atmosphere will not
be formed: the mixture of gas and air lacks
sufcient fuel (gas) to burn.
NAMUR
NAMUR is an international user association of
automation technology in process industries.
This organisation has issued experience
reports and working documents, called recommendations (NE) and worksheets (NA).
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X-STREAM XE
SYMBOLS USED ON AND INSIDE THE UNIT
Wherever one or more of the following symbols appear on or inside the instrument, be careful
and read the instructions given in the accompanying manuals!
Strictly observe the given warnings, instructions and information to minimize hazards!
This symbol at the instrument ...... means
dangerous voltages may be accessible. Remo-
ving covers is permitted only, if the instrument is
disconnected from power - and even in this case
by qualied personnel only!
hot surfaces may be accessible. Removing
covers by qualied personnel is permitted only,
if the instrument is disconnected from power.
Nevertheless several surfaces may remain hot
for a limited time.
more detailled information available: see in-
struction manual before proceeding!
more detailled information available: see in-
struction manual before proceeding!
Safety Instructions
S
Emerson Process Management GmbH & Co. OHG S-3
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SYMBOLS USED IN THIS MANUAL
Where one or more of the following symbols appear within this manual, carefully read the rela-
ted information and instructions!
Strictly observe the given warnings, instructions and information to minimize hazards!
This symbol used in the manual ...... means
dangerous voltages may be exposed
hot surfaces may be exposed
possible danger of explosion
toxic substances may be present
substances harmful to health may be present
indicates notes relating to heavy instruments
electrical components may be destroyed by
electrostatic discharges
units must be disconnected from the power
source
refers to conditions or information on operating
at low temperatures
indicates basic conditions or procedures are
being described.
This symbol may also indicate information impor-
tant for achieving accurate measurements.
Emerson Process Management GmbH & Co. OHGS-4
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X-STREAM XE
SAFETY INSTRUCTIONS
INTENDED USE STATEMENT
X-STREAM XE series gas analyzers are intended to be used as analyzers for industrial
purposes. They must not be used in medical, diagnostic or life support applications nor
as safety devices.
Using X-STREAM XE analyzers as safety devices, requiring redundant design or SIL clas-
sication, is also not permitted.
No independent agency certications or approvals are to be implied as covering such
applications!
GENERAL SAFETY NOTICE / RESIDUAL RISK
If this equipment is used in a manner not specied in these instructions, protective sy-
stems may be impaired.
Despite of incoming goods inspections, production control, routine tests and application
of state-of-the-art measuring and test methods, an element of risk remains when operating
a gas analyzer!
Safety Instructions
S
Even when operated as intended and observing all applicable safety instructions some
residual risks remain, including, but not limited to, the following:
• An interruption of the protective earth line, e.g. in an extension cable, may result in risk
to the user.
• Live parts are accessible when operating the instrument with doors open or covers
removed.
• The emission of gases hazardous to health may even be possible when all gas connections have been correctly made.
Avoid exposure to the dangers of these residual risks by taking particular care when installing, operating, maintaining and servicing the analyzer.
ADDITIONAL LITERATURE
This manual covers aspects important for installation and startup of X-STREAM XE gas
analyzers.
For comprehensive information on operating and maintain/service the instrument in a
safe manner it is MANDATORY to read all additional instruction manuals! If not provided
as printed version, check the accompanying USB stick for an electronic version (PDF)!
The following additional instruction manuals are available or referenced within this manual:
• Separate manuals for Hazardous Area applications
Contact your local service center or sales ofce when missing documents.
SAVE ALL INSTRUCTIONS FOR FUTURE USE!
Emerson Process Management GmbH & Co. OHG S-5
Instruction Manual
X-STREAM XE
Safety Instructions
HASXEE-IM-HS
10/2012
AUTHORIZED PERSONNEL
In-depth specialist knowledge is an absolutely necessary condition for working with and
on the analyzer.
Authorized personnel for installing, operating, servicing and maintaining the analyzer are
instructed and trained qualied personnel of the operating company and the manufacturer.
It is the responsibility of the operating company to
• train staff,
• observe safety regulations,
• follow the instruction manual.
Operators must
• have been trained,
• have read and understood all relevant sections of the instruction manual before
commencing work,
• know the safety mechanisms and regulations.
To avoid personal injury and loss of property, do not install, operate, maintain or service
this instrument before reading and understanding this instruction manual and receiving
appropriate training.
NOTES ON BATTERIES
• This instrument contains a Li battery (button cell) of type CR 2032.
• The battery is soldered and usually does not need to be replaced during the
instrument´s lifetime.
• At the end of lifetime, the instrument must be disposed in compliance with the wast
regulations. The disposal specialist then has to disassemble the instrument and
dispose the battery in compliance with the regulations.
• Batteries may leak, overheat or explode if not handled properly.
• Do not open or try to charge a battery.
• Do not expose batteries to heat or re.
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Safety Instructions
X-STREAM XE
INSTALLING AND CONNECTING THE UNIT
The following notices should be carefollowed to ensure compliance with the low voltage directive
(Europe) and other applicable regulations.
1.
Suitable grounding connections should be made at all connectors provided for this purpose.
2. All safety covers and grounding connections must be properly reinstated after maintenance
work or troubleshooting.
3. A fuse should be provided at the installation site which will completely disconnect the unit
in case of failure. Installing an isolating switch may also be benecial. In either case, these
components must be constructed to conform to recognised norms.
Safety Instructions
S
OPERATING AND MAINTAINING THIS UNIT
On leaving our factory, this instrument confor-
med to all applicable safety directives.
In order to preserve this state of affairs, the
operator must take care to follow all the instructions and notes given in this manual and
on the unit.
Before switching on the unit, ensure that the
local nominal mains voltage corresponds to
the factory-set operational voltage of this
unit.
Any interruption of the protective earth connections, whether inside or outside of the unit,
may result in exposure to the risk of electricity .
Deliberately disconnected the protective earth
is therefore strictly forbidden.
Removing covers may expose components
conducting electric current. Connectors may
also be energised. The unit should therefore
be disconnected from the power supply before
any kind of maintenance, repair or calibration
work requiring access to the inside of the
unit.
Only trained personnel who are aware of
the risk involved may work on an open and
energized unit.
Fuses may only be replaced by fuses of an
identical type and with identical ratings. It is
forbidden to use repair fuses or to bypass
fuses.
Take note of all applicable regulations when
using this unit with an autotransformer or a
variable transformer.
Substances hazardous to health may escape
from the unit’s gas outlet. This may require
additional steps to be taken to guarantee the
safety of operating staff.
Emerson Process Management GmbH & Co. OHG S-7
X-STREAM XE
The units described in this manual may not be used in explosive atmospheres
without additional safety measures.
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Safety Instructions
EXPLOSION HAZARD
ELECTRICAL SHOCK HAZARD
Do not operate without covers secure.
Do not open while energized.
Installation requires access to live parts which can cause death or serious
injury.
For safety and proper performace this instrument must be connected to a
properly grounded three-wire source of power.
TOXIC GASES
This unit’s exhaust may contain toxic gases such as (but not limited to)
e.g. sulfur dioxide. These gases can cause serious injuries.
Avoid inhaling exhaust gases.
Connect the exhaust pipe to a suitable ue and inspect the pipes regularly
for leaks.
All connections must be airtight to avoid leaks;
7-4 for instructions
on performing a leak test.
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The models intended for outside and wall mounted use (X-STREAM XEXF
and XEFD) weigh between 26 kg (57 lb) and 63 kg (139 lb) depending on
options installed.
X-STREAM XE
Safety Instructions
HEAVY INSTRUMENT
Safety Instructions
Two people and/or lifting equipment is required to lift and carry these
units.
Take care to use anchors and bolts specied to be used for the weight of
the units!
Take care the wall or stand the unit is intended to be installed at is solid
and stable to support the weight!
CRUSHING HAZARD
Take care of crushing hazard when closing the front door of analyzer eld
housings!
Keep out of the closing area between enclosure cover and base!
OPERATION AT LOW TEMPERATURES
When operating an instrument at temperatures below 0 °C (32 °F), do
NOT apply gas nor operate the internal pump before the warmup time has
elapsed!
S
Violation may result in condensation inside the gas paths or damaged
pump diaphragm!
HIGH TEMPERATURES
Hot parts may be exposed when working on photometers and/or
heated components in the unit.
Emerson Process Management GmbH & Co. OHG S-9
X-STREAM XE
Safety Instructions
GASES AND PREPARATION OF GASES
GASES HAZARDOUS TO HEALTH
Follow the safety precautions for all gases (sample and span gases) and
gas cylinders.
Before opening the gas lines, they must be purged with air or neutral gas
(N2) to avoid danger from escaping toxic, ammable, exposive or hazardous
gases.
Instruction Manual
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FLAMMABLE OR EXPLOSIVE GASES
When supplying explosive gases or ammable gases with concentrations of
more than 25 % of the lower explosion limit, we RECOMMEND implementing
one or more additional safety measures:
• purging the unit with inert gas
• stainless steel internal pipes
• ame arrestors on gas inlets and outlets
• infallible measuring cells.
Emerson Process Management GmbH & Co. OHGS-10
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POWER SUPPLY
Only qualied personnel following all applicable and legal regulations may
install the unit and connect it to power and signal cables. Failure to comply
may invalidate the unit’s warranty and cau se exposure to the risk of damage,
injury or death.
This unit may only be installed by qualied personnel familiar with the
possible risks.
Working on units equipped with screw-type terminals for electrical
connections may require the exposure of energized components.
X-STREAM XE
Safety Instructions
CONNECTING UNITS FOR PERMANENT INSTALLATION
Safety Instructions
S
Wall-mounted units have no power switch and are operational when
connected to a power supply . The operating company is therefore required
to have a power switch or circuit breaker (as per IEC 60947-1/-3) available
on the premises. This must be installed near the unit, easily accessible to
operators and labelled as a power cut-off for the analyzer.
HAZARD FROM WRONG SUPPLY VOLTAGE
Ensure that the local power voltage where the unit is to be installed,
corresponds to the unit’s nominal voltage as given on the name plate
label.
ADDITIONAL NOTES FOR UNITS WITH SCREW-TYPE TERMINALS
Cables for external data processing must be double-insulated against mains
power.
If this is not possible, cables must be laid in such a way as to guarantee
a clearance of at least 5 mm from power cables. This clearance must be
permanently secured (e.g. with cable ties).
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General Operating Notes
GENERAL OPERATING NOTES
EXPLOSION HAZARD
Exhaust gases may contain hydrocarbons and other toxic gases such as
carbon monoxide. Carbon monoxide is toxic.
Faulty gas connections may lead to explosion and death.
Ensure that all gas connections are connected as labelled and airtight.
• The unit must be installed in a clean and dry area protected from strong vibrations and
frost
.
• The unit must not be exposed to direct sunlight and sources of heat. Admissable ambient
temperatures (see technical details) must be adhered to.
• Gas inlets and outlets must not be interchanged.All gases must be supplied to the unit already
processed. When using this unit with corrosive sample gases, ensure that these gases do
not contain components harmful to the gas lines.
• Admissable gas pressure for sample and test gases is 1500 hPa.
• Exhaust lines must be laid inclined downwards, depressurized, protected from frost and
according to applicable regulations.
• If it is necessary to disconnect the gas lines, the unit’s gas connectors must be sealed with
PVC caps to avoid polluting the internal gas lines with condensate, dust, etc.
• To ensure electromagnetic compatibility (EMC), only shielded cables (supplied by us on re-
quest, or of equivalent standard) may be used. The customer must ensure that the shielding
is correctly tted. Shielding and terminal housing must be electrically connected; submin-D
plugs and sockets must be screwed to the unit.
• When using optional external adapters (submin-D to screw-type terminal), protection from
electromagnetic interference can no longer be guaranteed (CE compliance pursuant to EMC
guidelines). In this case the customer or operating company functions as a system builder
and must therefore ensure and declare compliance with EMC guidelines.
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X-STREAM XE
Chapter 1
Technical Description
The following are the main features of the new
Emerson Process Management X-STREAM
Enhanced (hereinafter also referred to as
"X-STREAM XE") gas analyzers in brief:
• compact design with easily accessible
internal components
• customizable for a wide range of appli-
cations: different housings are available
while internal construction remains largely
identical
• a highly integrated mainboard contains
all interfaces and basic functions for the
operation of the unit
• multilingual microprocessor-controlled
user interface with liquid crystal display
(LCD) to indicate measurement values
and status messages
• units for outdoor use are supplied with an
impact tested front panel
• widerange power supply unit for worldwide
use without modication (
1
⁄2 19in units with
internal or external PSUs)
X-STREAM XE gas analyzers can measure up to five different gas components
by multiple combinations of the following
analyzing techniques (restrictions apply to
1
⁄219in units, and to parallel tubing):
IR = non-dispersive infrared analysis
UV = ultraviolet analysis
pO
=
paramagnetic oxygen analysis
2
eO
=
electrochemical oxygen analysis
2
= electrochemical trace oxygen analysis
tO
2
TC = thermal conductivity analysis
tH
O = trace moisture measurement
2
Modied resistant measuring cells are avai-
lable for use with corrosive gases and/or
gases containing solvents.
Special congurations (e.g. intrinsically safe
or infallible measuring cells) for the analysis
of combustible gases are also available.
Chapter 3 gives a detailed description of
the various measuring techniques.
Standard applications
Different housings allow X-STREAM ana-
lyzers to be tailored to the many different
applications:
• Tabletop units in
1
⁄219in modular design,
with IP 20 protection class
• Tabletop and rack mountable units in 19in
modular design, with IP 20 protection
class
• Stainless steel wall mountable field
housing with IP 66 / NEMA 4X protection
class for outdoor use (operating temperature -20°C to +50°C).
4X protection class for outdoor use in
hazardous areas.
The various analyzer types are described in
more detail beginning with page 1-14.
Installation in hazardous areas
X-STREAM XEXF eld housing analyzers,
when featuring various protection methods,
can also be installed and operated in hazar-
dous areas. Available options are:
• Non-incendive assembly (Ex nA nC) for
installation in Zone 2 and Division 2 for the
measurement of non-ammable gases.
Technical Description
1
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X-STREAM XE
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1 Technical Description
• Pressurized enclosure conforming to
ATEX directive 94/9/EC, for installation
in Zone 2.
• Simplified purge system (Z-purge) for
installation in North American Div 2 environments.
The cast aluminium eld housing is designed
to withstand an explosion and intended to be
used in hazardous areas of Zone 1.
More information about analyzers for hazardous areas can
be obtained from your Emerson
Process Management sales
ofce.
Note!
These instructions do not detail the installati-
on nor operation of X-STREAM analyzers in
hazardous areas. If you intend to use your
analyzer for such purposes, pay attention
to the separate instruction manuals supplied with analyzers to be used in hazardous areas.
Further features (in parts options):
• Congurable measurement display
• gas values and/or secondary measure-
ments (e. g. ow)
• single or dual pages
• Congurable measurement units
• supports conversion factors from ppm
to several other, even user specic units
• 3 independent software access levels
• protection against unauthorized chan-
ging of congurations
• password protected
• to be separately activated
• Unattended zero and span calibrations
• calibrations without user interaction
• Communication via serial and Ethernet
interface
• remotely control the analyzer
• Web browser interface
• remote control and monitoring via stan-
dard web browser
• Realtime clock
• Synchronizing with internet time server
• enables time controlled calibration
• Data logger with individually congurable
parameters
• measuring values protocols, e.g. for
quality or process monitoring and control
• Event protocol with congurable events list
• remote analyzer status monitoring
• Logfile sizes only limited by available
space on an internal SD card
• up to 2 GB enable logging periods up
to 1 year
• SD card replacable (not by operator , due
to internal use by the analyzer rmware)
Emerson Process Management GmbH & Co. OHG1-2
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1 Technical Description
• Log le export via USB, Ethernet and web
browser
• text format
• enables external data analysis
• Backup and restore analyzer congura-
tions to/from protected internal memory
or USB stick
• protection against changes, store for
reference,
• restore a working conguration in case
of faults or faulty conguration changes
• Calculator
• working with measurement values
• setup a virtual calculated channel on
basis of real measurement values (e. g.
calculate NO and NO2 to NO
)
x
• text le programming via web browser
or external computer
• up-/download via USB or web browser
X-STREAM XE
Technical Description
1
• Integral programmable logic control (PLC)
• control valves, pumps,.and more.
• text le programming via web browser
or external computer
• up-/download via USB or web browser
More detailed information is provided by the
related sections of this manual, or by docu-
mentation, separately available.
Emerson Process Management GmbH & Co. OHG 1-3
X-STREAM XE
1.1 Overview
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1.1 Overview
All X-STREAM Enhanced gas analyzers feature an easy-to-use graphical user interface,
which displays measurement values, status
and error messages, and menus for the input
of parameters.
For ease of use, the operator at any time
can select one of the following languages for
1.1.1 The Front Panel
The graphic LCD shows measurement and
status information with plain text and sym-
bols.
The symbols are designed to indicate the dif-
ferent status 'Failure', 'Function check', 'Out
of specication' and 'Maintenance request' as
specied by the NE 107 standard. For further
information,
Chapter 8.
the display: English, French, German, Spanish, Portuguese and Polish; Italian is under
preparation and may be available at time of
publishing this document.
The analyzer software is operated by means
of only six keys.
The displays of outdoor versions are protected
with an impact tested glass panel, to withstand
even harsher conditions and to provide a higher
IP protection class of IP66 / NEMA Type 4X.
1342
1 Graphic display
2 “Home“ key
3 “Enter” key
4 4 keys for settings and menu navigation
Fig. 1-1: X-STREAM Enhanced Front Panel (here X-STREAM XEGP)
Emerson Process Management GmbH & Co. OHG1-4
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1.2 Conguration of Gas Lines
1.2 Conguration of Gas Lines
X-STREAM XE
1.2.1 Materials Used
Various materials are available to allow the
analyzer to be customized to your needs.
The materials used are selected based on
the characteristics of the sample gas, e.g.
diffusion rate, corrosiveness, temperature and
pressure. Among those available are Viton
®
,
PFA and stainless steel.
1.2.2 Safety Filter
The analyzers are generally tted with an
internal stainless-steel lter. This lter is not
a replacement for any dust lter in the prepa-
ration of the gas, but represents a last line of
defence.
1.2.3 Gas Inlets and Outlets
Rackmounted and tabletop devices are tted
with PVDF inlets and outlets (ø 6/4 mm) as
standard. Alternatively, Swagelok™ or stain-
less steel ttings (ø 6/4 mm or
1
⁄4 in).
Wall-mounted eld housings are supplied
with Swagelok™ or stainless steel ttings (ø
6/4 mm or 1⁄4 in).
Other materials available on request.
X-STREAM XEFD units are always supplied
with ame arrestors and stainless steel ttings
(ø 6/4 mm or
1
⁄4 in).
Fieldhousings and 19 in analyzers provide up
to 8 gas ttings, so if featuring ve channels,
this requires at least two channels in serial
tubing.
1.2.5 Infallible Containments
Infallible containments are gas lines which,
due to their design, can be regarded as per-
manently technically tight. This is achieved
by, for example, welded joints, or metallically
sealing joints (e.g. tap connectors and bin-
ders), providing they are seldom disconnec-
ted. Gas lines congured in this manner can
be used for measuring noxious, ammable
and explosive gases. At the time of going to
press, infallible containments are available
for thermal conductivity analysis (TC) only.
Further information about infallible contain-
ments can be found in the separate instruction
manual supplied with these units.
Infallible containments do not
render it unnecessary to regularly test for leaks, e.g. following
lengthy breaks in service, substantial alterations, repairs and
modications.
Read the separate instruction
manual giving detailed instructions on the conguration, operation and maintenance of units
fitted with infallible containments.
Technical Description
1
1.2.4 Tubing
Unless otherwise specied, the analyzers
are supplied with Viton
®
or PVDF piping
(ø 6/4 mm or 1⁄4 in). Other materials (e.g.
stainless steel) can be used, depending on
the application.
Emerson Process Management GmbH & Co. OHG 1-5
X-STREAM XE
1.2 Conguration of Gas Lines
1.2.6 Optional Components for Gas Lines
Instruction Manual
HASXEE-IM-HS
10/2012
The analyzers can, as an option, be tted with
further components. Not all components are
available for all analyzer types:
• internal sample gas pump
• internal valve block
• internal ow sensors
• internal ow monitor switch
• internal barometric pressure sensor
• internal temperature sensors.
1.2.6.1 Internal Sample Gas Pump
An internal sample gas pump is used when
the sample gas is under insufcient pressure.
It ensures a constant ow of sample gas (max.
2.5 l/min through the analyzer).
When in internal pump is tted, the relevant
parameter in the software setup dialog is set
to Yes (
6-88). The pump can be con-
trolled either manually through a software
menu or optionally by a digital input.
Note!
Gas pressure is limited to atmospheric, if an
internal pump is used!
1.2.6.2 Internal Valve Block
An internal valve block allows all necessary
gas lines (zero gas, span gas, sample gas)
to remain permanently connected to the
analyzer. Valves are then activated automatically when required (e.g. during automatic
calibration).
When an internal valve block is tted, this
is shown in the relevant software setup
dialog as either Internal or Int+Ext (
6-88). The valves are controlled by either
a software menu, optionally by digital in-
put, or automatically during autocalibration.
Depending on the model, up to two valve
bocks can be tted.
1.2.6.3 Internal Flow Sensor
Up to two internal ow sensors can measure
the ow of gas and, compared to the ow
monitor switch can provide a ow reading.
They also can activate an alarm signal in the
event of a failure.
The alarm level for ow sensors is operator
adjustable to up to 2000 ml/min. Depending
on the model, up to two sensors can be tted
and evaluated separately.
When a sensor is tted, the relevant parame-
ter in the software setup dialog is set to Yes
(
6-90).
If the current ow rate is too low, a status
message is displayed and the parameter
under CHECK REQUESTS.. is set to Yes
(
Chapter 8 'Troubleshooting').
1.2.6.4 Internal Flow Monitor Switch
An internal ow switch monitors the gas ow
and activates an alarm signal in case it is
not sufcient. Compared to the ow sensore
it does not provide a ow reading, but only
indicates if the ow is sufcient, or not.
The alarm level for the internal ow switch is
xed and not operator adjustable. Additional
external switches may be used and connected
via digital inputs. All tted ow switches are
evaluated to share a common alarm.
When an internal ow switch is tted, the re-
levant parameter in the software setup dialog
is set to Yes (
If the current ow rate is too low, a status
6-88).
message is displayed and the parameter
under CHECK REQUESTS.. is set to Yes
(
Chapter 8 'Troubleshooting').
Emerson Process Management GmbH & Co. OHG1-6
Instruction Manual
HASXEE-IM-HS
10/2012
1.2 Conguration of Gas Lines
1.2.6.6 Internal Barometric Pressure Sensor
X-STREAM XE
Varying atmospheric pressure has an inuence also on the density of the gases applied
to the measuring system: Higher density correlates with more molecules per volume and
thus inuences the measuring results.
To compensate such inuences. an internal
barometric pressure sensor can be installed.
It´s reading is used to electronically compen-
1.2.6.5 Internal Temperature Sensors
In the same way as pressure variations, va-
rying temperatures inuence the measuring
results: Higher temperature results in lower
gas density and thus in less molecules per
volume. To compensate temperature inu-
ence, internal temperature sensors can be
installed to electronically compensate temperature variations (
specication).
page 3-21 ,measurement
sate the atmospheric pressure variation (
measurement specication, page 3-21).
If such a sensor is installed in the unit, the
related menu shows the entry Internal (
6-88).
Depending on the conguration of the unit or
the demands of the application, temperature
sensors can measure the unit’s internal temperature or selected measurement channel
components.
If such sensors are installed in the unit, this
is indicated in the installed options menu
(
6-88).
Technical Description
1
Emerson Process Management GmbH & Co. OHG 1-7
X-STREAM XE
1.2 Conguration of Gas Lines
1.2.6.7 Optional Heated Area
Instruction Manual
HASXEE-IM-HS
10/2012
The physical components can be optionally
separated from the electrical components
by means of a special box (not an option for
½ 19 in units). This can be done for one or
both of the following purposes:
Firstly, the box allows the physical compo-
nents to be regulated to a temperature of
approx. 60 °C, avoiding condensation of
gases or minimizing the inuence of varying
environmental temperatures.
Secondly, the box can be purged with, for
example, inert gas (enclosure purge). The
purge gas is rst fed through a separate tting, purges the electronic components, then
oods the box and leaves the instrument via
another tting.
Purging in this manner can be useful when
measuring very low concentrations (e.g. of
CO or CO
): the expulsion of ambient air
2
avoids adulterant outside inuences.
Alternatively, enclosure purging can be used
to secure enhanced protection for electronic
parts and operators from corrosive or toxic
gases: any leaking gas is expelled from the
housing and does not escape into the vicinity
of the unit or come into contact with any elec-
tronic components located outside the box.
In either case, the purge gas outlet should be
connected to an exhaust gas line.
Isolating cover
Physical
components
(example)
The gure shows the heated
area with the insulating cover
removed.
Fig. 1-2: Optional Heated Area
Heated mounting panel
Cable support for
signal wires
Emerson Process Management GmbH & Co. OHG1-8
Instruction Manual
HASXEE-IM-HS
10/2012
1.2.6.8 Suppressed Ranges
X-STREAM XE
1.2 Conguration of Gas Lines
Suppressed ranges require additional components (some optional, or depending on
measurement):
• internal isolating box covering measuring
cells, detectors and sources only
• pressure regulator
• ow sensor
• pressure sensor.
Restrictions apply to ambient operating tem-
perature ranges for suppressed ranges.
Technical Description
1
Pressure
regulator
Isolating box for
suppressed ranges
Pressure
sensor
Note!
Images show optional components.
Content of Images is reduced to essential.
Fig. 1-3: Suppressed Ranges Options
Emerson Process Management GmbH & Co. OHG 1-9
Flow
sensor
X-STREAM XE
1.2.7 Congurations
Instruction Manual
HASXEE-IM-HS
10/2012
1.2 Conguration of Gas Lines
Depending on the application and the selected
analyzer options, several gas line congurati-
ons are available, exemplied in the following
diagram of a dual-channel analyzer:
Note!
X-STREAM gas analyzers feature at maximum eight gas connectors. So, parallel tubing
is not possible for ve channel congurations
(at least two out of ve channels need to be
serial tubed)!
Fig. 1-4: Gas Flow Diagram: Single Channel Or in Series
Emerson Process Management GmbH & Co. OHG1-10
Instruction Manual
HASXEE-IM-HS
10/2012
1.3 Interfaces
X-STREAM XE
1.3 Interfaces
All analyzer types are tted with one analog
electrical output for each channel, four status
relays, 2 Ethernet interfaces and a serial service interface as standard.
As an option, further interfaces can be added.
1.3.1 Analog Outputs
By default each X-STREAM analyzer is tted with one output per channel, which can
transmit data on concentration levels to an
external data acquisition system. Up to ve
analog outputs can be installed.
The analog outputs support several operation
modes, such as 4-20 mA, 0-20 mA, as well
as the NAMUR NE 43 specications (incl.
Live Zero). Operation modes can be set in a
software menu ( 6-62).
The factory setting for analog outputs is
4-20 mA.
Depending on the unit conguration, all in-
terfaces are accessible via either SubminD
connectors or screw terminals
.
X-STREAM analyzers support up to five
analog outputs, which, however, do not al-
ways need to be assigned to measurement
channels which are physically present: If
a unit features less than ve channels, the
remaining analog outputs can be used to
transmit concentration levels with a different
resolution; for example, a single-channel
analyzer could be set up as follows:
Output 1: 0 … 100 % CO
Output 2: 0 … 25 % CO
= 4 … 20 mA
2
= 4 … 20 mA
2
Technical Description
1
1.3.2 Status Relays
By default each analyzer provides four relays
outputs, precongured to signal the current
status of the unit according to the NAMUR
NE 44 specication ('Failure', “Maintenance
request”, 'Out of specication' and 'Function
check'). However, the operator can assign
different functions to the relays via software
menus. For a comprehensive list of available
Electrical details:
maximum load of 30 V / 1 A / 30 W,
can be operated as normally open (NO) or
normally closed (NC).
Further information on the status relays is
provided in the section 'Technical Data'
2-2.
functions, 6-68.
Note!
Any NE 44 status is also indicated by symbols appearing in the display´s 1st line. These
symbols remain conformant to NE 44 even
when the status relays are software assigned
different functions.
Emerson Process Management GmbH & Co. OHG 1-11
X-STREAM XE
1.3 Interfaces
1.3.3 Modbus Interface, Ethernet
The Ethernet Modbus interface offers the
same form of communication with a data
acquisition system as does a serial interface.
Furthermore this interface enables to connect
the analyzer to a network, providing webbrowser access.
This interface is electrically isolated from the
unit’s electronic components and enables
the construction of a network of several analyzers.
All supported Modbus parameters are listed
in
Information about web-browser access is
provided in Chapter 7.
Chapter 9.
Instruction Manual
HASXEE-IM-HS
10/2012
Fig. 1-5: Ethernet Interface Marking
Note!
All analyzers provide 2 Ethernet connectors
1.3.4 Serial Interface
A serial interface with the Modbus protocol
allows communication with external data
acquisition systems. The interface enables
the exchange and modication of measure-
ment and analyzer signals, analyzer status
monitoring as well as remote activation of
procedures.
The serial interface is electrically isolated from
the unit’s electronic components. RS 485 facilitates the construction of a network of several analyzers. RS 232 interface only supports
communication between two end devices.
1.3.5 USB Interfaces
Two USB connectors enable connecting
• storage devices to the bigger port for
external data and analyzer conguration
storage
• external computers to the smaller Mini
USB port.
All supported Modbus parameters are listed
in Chapter 9.
A table nearby the
connector shows the
interface conguration
(here: MODBUS)
Fig. 1-6: Serial Interface Marking
X
Chapter 7 provides more information on
how to use USB ports.
Fig. 1-7: USB Interfaces
Emerson Process Management GmbH & Co. OHG1-12
Instruction Manual
HASXEE-IM-HS
10/2012
1.3.6 Optional Interfaces
1.3.6.1 Analog Inputs
X-STREAM XE
1.3 Interfaces
Two d. c. analog inputs enable connection to
external devices. Their signals can be used
for e.g.
• cross compensation
• pressure compensation, or
• handled as a separate measurement chan-
nels.
1.3.6.2 Digital Outputs
In addition to the 4 default digital outputs,
analyzers can optionally be upgraded with
9 or 18 more digital outputs, to be used for
various purposes, e.g.:
• Triggering concentration alarms: Process
control systems can detect when limits are
exceeded and trigger appropriate actions.
• Switching external components: For ex-
ample, during automatic calibration, the
necessary valves can be activated directly
by the analyzer.
Electrical details:
0–1 (10) V , R
= 100 kΩ
in
or
0–20 mA, R
= 50 Ω
in
The inputs are protected against overload up
15 V or ±20 mA.
to ±
The different functions can be assigned via
software menus. For a comprehensive list of
available functions,
6-68.
Electrical details:
maximum load of 30 V / 1 A / 30 W,
can be operated as normally open (NO) or
normally closed (NC).
Technical Description
1
1.3.6.3 Digital Inputs
Digital inputs can be integrated into the units
in groups of 7 or 14.
Digital inputs can be used to:
• trigger calibration procedures, for example
by a process control system
• remotely control valves and the optional
sample gas pump (in concert with correctly
congured digital outputs).
The different functions can be assigned via
software menus. For a comprehensive list of
available functions,
Emerson Process Management GmbH & Co. OHG 1-13
6-71 .
Electrical details:
DC inputs
LOW: U
HIGH: U
R
: 57.5 kΩ
in
≤ 1,5 V
in
≥ 4,5 V
in
Common ground for all outputs (“INGND”)
The inputs are protected against excess
voltages of up to approx. 40 V. An open (not
wired) input has LOW potential.
X-STREAM XE
1.4 Comparison of Analyzer Models
1.4 Comparison of the Various X-STREAM Enhanced Analyzer Models
Instruction Manual
HASXEE-IM-HS
10/2012
X-STREAM XEGK
1
⁄219 in housing, table-top or rackmountable,
optional with carrying handle
1
⁄119 in housing, table-top or rackmountable,
protection type: IP 20
X-STREAM XEGP
protection type: IP 20
Internal wide range power supply, or
Internal wide range power supply unitInternal wide range power supply unitInternal wide range power supply unit
24V input with external power supply unit
Max. 3 channels in many combinations
max. 8 gas connections,
including 1 optional purge gas connection
Options for gas lines: Flow sensor, pressure
sensor, infallible gas lines. With restrictions on
measurement channel combinations: sample
gas pump, 1 valve block
1–5 analog outputs, 4 relay outputs, 2 Mod-
bus Ethernet interfaces, 2 USB connectors
optional:
1 interface card with 7 digital inputs and
9 digital outputs
1 interface card with analog inputs
electrical interfaces accessible via sockets on
back of unit
Max. 5 channels in many combinations
max. 8 gas connections,
1 optional extra connection for purge gas
Options for gas lines: Flow sensor, pressure
sensor, heating for physical components,
sample gas pump, 1 or 2 valve blocks, infallible gas lines
1–5 analog outputs, 4 relay outputs, 2 Mod-
bus Ethernet interfaces, 2 USB connectors
optional:
1 or 2 interface cards, each with 7 digital
inputs and 9 digital outputs
1 interface card with analog inputs
electrical interfaces accessible via sockets on
back of unit, optionally: screw-type terminal
adapters
(except for Ethernet & USB)
LCDLCDLCD, impact tested front panelLCD, impact tested front panel
Max. operating ambient temperature
0 °C to +50 °C (32 °F to 122 °F)
*)
:
Max. operating ambient temperature
0 °C to +50 °C (32 °F to 122 °F)
*)
:
Size: (DxHxW): max. ca. 460x128.7x213 mm
Weight: ca. 8–12 kg (17.6 - 26.5 lb)
Size: (DxHxW): max. ca. 411x133x482 mm
Weight: ca. 11–16 kg (24.3–35.3 lb)
For more detailed information: 1-16 For more detailed information: 1-18 For more detailed information: 1-20For more detailed information: 1-25
*)
: Limitations apply to selected measurement principles and ranges,
Measurement specications!
Emerson Process Management GmbH & Co. OHG1-14
Instruction Manual
HASXEE-IM-HS
10/2012
X-STREAM XEXFX-STREAM XEFD
X-STREAM XE
1.4 Comparison of Analyzer Models
Technical Description
Stainless steel wallmountable eld housing,
tection type: IP66 / NEMA 4X
Single (XEF) or dual (XDF) compartment design
Max. 5 channels in many combinations
max. 8 gas connections,
1 optional extra connection for purge gas
Options for gas lines: Flow sensor, pressu-
re sensor, heating for physical components,
sample gas pump, 1 or 2 valve blocks, infallible gas lines
1–5 analog outputs, 4 relay outputs, 2 Mod-
bus Ethernet interfaces, 2 USB connectors
optional:
1 or 2 interface cards, each with 7 digital
inputs and 9 digital outputs
1 interface card with analog inputs
electrical interfaces on internal screw-type terminal adapters
(except for Ethernet & USB)
pro-
Cast aluminum wallmountable eld housing,
protection type: IP66 / NEMA 4X
Max. 5 channels in many combinations
max. 8 gas connections,
including 2 optional purge gas connection
Options for gas lines: Flow sensor, pressu-
re sensor, heating for physical components,
sample gas pump, 1 or 2 valve blocks, infallible gas lines
1–5 analog outputs, 4 relay outputs, 2 Mod-
bus Ethernet interfaces, 2 USB connectors
optional:
1 or 2 interface cards, each with 7 digital
inputs and 9 digital outputs
1 interface card with analog inputs
electrical interfaces on internal screw-type terminal adapters
(except for Ethernet & USB)
1
Max. operating ambient temperature
-20 °C to +50 °C (-4 °F to 122 °F)
Models available for use in hazardous areas
(explosive environments)
Size: (DxHxW): ca. 265x400 (815)x550 mm
Weight: max. ca. 25 (45) kg / 55.1 (99.2) lb
Emerson Process Management GmbH & Co. OHG 1-15
*)
:
Max. operating ambient temperature
-20 °C to +50 °C (-4 °F to 122 °F)
Flameproof enclosure: approved for use in
hazardous areas (explosive environments)
Size: (DxHxW): max. ca. 222x512x578 mm
Weight: max. ca. 63 kg (138.9 lb)
*)
:
X-STREAM XE
1.5 X-STREAM XEGK
1.5 X-STREAM XEGK: ½19 Inch Table-Top Unit
This compact model for general purposes
can be tted with up to three measurement
channels in various combinations. Power is
supplied by an internal wide range power sup-
ply or a separate external power supply unit.
By default the units are congured for tabletop
use. A carrying handle is optional available
which makes it easy to take the instrument to
varying sampling points. For rack mounting a
XEGK is xed by screws located at the front
panel.
Connection to power supply
AC is supplied by an IEC chassis plug with
power switch and fuse holders. The internal
wide range power supply unit enables the
analyzers to be used worldwide. DC 24 V
power is supplied via a 3-pin socket at the
rear of the unit.
Instruction Manual
HASXEE-IM-HS
10/2012
Interfaces
Electrical connections for interface signals are
provided via submin-D connectors, Ethernet
and USB connectors mounted on the rear
panel of the device ((
Fig. 1-8).
Detailed technical details on the various in-
terfaces can be found at 2-2. The con-
guration of the connectors are described in
Chapter 4 'Installation' and the software
settings in Chapter 6 'User interface and
software menus'.
Gas connections
Depending on the conguration of the unit
(number of measurement channels and serial
or parallel connection), sample and calibration
gases are fed into the unit via up to 8 tube
ttings mounted on the rear panel. Any free
tube ttings can be used for purging the de-
vice
to minimize interference from the ambient
atmosphere, or when measuring corrosive and/
or ammable gases.
Emerson Process Management GmbH & Co. OHG1-16
Instruction Manual
HASXEE-IM-HS
10/2012
X-STREAM XE
1.5 X-STREAM XEGK
Technical Description
1
134562
1112137
Note!
Figures show optional components!
1 Status line
2 Graphic display
3 Messages line
4 home key
5 enter key
6 4 keys for adjustment and menu selection
7 Signal connectors (some optional)
Fig. 1-8: X-STREAM XEGK - Views
Emerson Process Management GmbH & Co. OHG 1-17
8 DC power input fuse
9 DC power input
10 Gas ttings and valve block
11 AC power input with switch and fuses
12 Standard gas in- and outlets
13 Carrying handle
78910
X-STREAM XE
1.6 X-STREAM XEGP
1.6 X-STREAM XEGP: 19 Inch Table-Top or Rackmount Design
Instruction Manual
HASXEE-IM-HS
10/2012
This model can be tted with up to ve measu-
rement channels in various combinations.
The physical components can optionally be
encased in a cover. This area can be held at
a specic temperature of up to 60 °C to mi-
nimize interference from changes in external
temperature.
Units congured for rack mounting can be
converted for tabletop use by removing the
lateral mounting brackets and attaching the
four feet supplied as accessories.
Connection to power supply
Main power is supplied via the IEC chassis
plug mounted on the rear panel, with integrated power switch and fuse holders. The
internal wide range power supply unit enables
the analyzers to be used worldwide.
Interfaces
Electrical connections for interface signals are
provided via submin-D connectors mounted
on the rear panel of the device (g 1-8).
For applications where screw-type terminals
are preferred, optional adapters are available,
which are mounted directly onto the submin-D
connectors.
Detailed technical details on the various in-
terfaces can be found at
2-2. The con-
guration of the connectors and the optional
screw-type terminal adapters are described in
Chapter 4 'Installation' and the software
settings in Chapter 6 'User interface and
software menus'.
Up to two digital I/O cards may be installed,
where the first digital I/O card is marked
"X4.1" while the second is "X4.2" on the rear
panel, right above the connector (
Fig.
1-9, rear view).
Gas connections
Depending on the conguration of the unit
(number of measurement channels and serial
or parallel connection), sample and calibra-
tion gases are fed into the unit via up to 8
threaded connectors mounted on the rear
panel. The conguration of the connectors is
indicated on an adhesive label located near
the connectors.
A further optional tube tting enables the
housing to be purged
to minimize interference
Emerson Process Management GmbH & Co. OHG1-18
Instruction Manual
HASXEE-IM-HS
10/2012
Front view
1 Status line
2 Graphic display
3 Messages line
134562
1.6 X-STREAM XEGP
4 home key
5 enter key
6 4 keys for adjustment and menu selection
X-STREAM XE
Technical Description
1
Rear view
152436
1 Gas connector ttings
2 Space for additional ttings
3 Optional purge gas inlet
Optional
Fig. 1-9: X-STREAM XEGP - Details
adapter
screw-type terminal
1
4 Power inlet with lter, fuses & switch
5 Signal input/output connectors (some optional)
6 Cover for eO
Strain-reliefs, top view details
2
1 Screw-type terminal adapters
2 Strain-reliefs
or tO
2
1
sensor
2
Emerson Process Management GmbH & Co. OHG 1-19
Instruction Manual
X-STREAM XE
HASXEE-IM-HS
10/2012
1.7 X-STREAM XEXF Field Housings
1.7 X-STREAM XEXF: Field Housing With (XEF ) Single or (XDF) Dual Compartment
Field housing are conceived for outdoor use
and wall-mounting. The coated stainless steel
housing has a protection class rated IP66 /
NEMA Type 4X, offering protection against
water and dust entering the device:
IPx6: In case of occasional ooding, e.g.
heavy seas, water shall not enter in harmful
quantities
IP6x: Protection against penetration by dust.
Live or internal moving parts are completely
protected.
An X-STREAM eld housing can be tted with
up to ve measurement channels in various
combinations. The physical components can
optionally be encased in a cover. This separate volume can be held at a specic tempe-
rature of up to 60 °C to minimize interference
from changes in external temperature.
Front panel
The analyzer’s display is
covered by an impact
tested glass for enhanced protection against
breakage in harsh environments.
Electrical connections
Electrical connections are provided via inter-
nal tube ttings, the cables being fed through
cable glands at the right side of the unit (
Fig. 1-11). The front cover of the housing
swings open to the left once the fasteners
have been released.
Connection to power supply
Mains power is supplied via screw-type terminals with integrated fuse holders at the right
side of the housing, near the front. The wide
range power supply unit mounted internally
enables the analyzers to be used worldwide.
Interface signals
Up to two digital I/O cards may be installed.
If so, on a label nearby, they are labeled
"X4.1" for the rst I/O board, and "X4.2" for
the second.
Detailed technical details on the various inter-
faces can be found at
2-2. The congu-
ration of the screw-type terminal adapters are
described in Chapter 4 'Installation'and
the software settings in Chapter 6 'User
interface and software menus'.
Gas connections
Depending on the conguration of the unit
(number of channels, series or parallel pi-
ping), up to eight tube ttings are provided for
the supply of sample and calibration gases.
The assignments of the ttings is given on an
adhesive label situated near the ttings.
A further optional tube tting enables the
housing to be purged
from the ambient atmosphere,
to minimize interference
or
when measu-
ring corrosive and/or ammable gases.
For further information, see 1-5.
Dual compartment variation XDF
The dual compartment variation XDF supports separating electronics and physics,
e.g. for measurement of corrosive or solvent
gases. For such applications the electronics
are installed in the upper compartment, while
measurement physics are in the lower com-
partment. This separation is also available as
gastight version.
XDF also provides more space e.g. for installation of optional signal converter elements for
system integrators.
Emerson Process Management GmbH & Co. OHG1-20
Instruction Manual
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X-STREAM XE
1.7 X-STREAM XEXF Field Housings
Technical Description
1
XEF
Fig. 1-10: X-STREAM XEXF Field Housings- Front Views
HEAVY INSTRUMENT
X-STREAM eld housings, intended for outside and wall mounted use,
weigh approx. (XEF) 26 kg (57 lb) or (XDF) 45 kg (99 lb), depending on
options installed.
Two people and/or lifting equipment is required to lift and carry these units.
Take care to use anchors and bolts specied to be used for the weight of
the units!
Take care the wall or stand the unit is intended to be installed at is solid
and stable to support the weight!
XDF
Emerson Process Management GmbH & Co. OHG 1-21
X-STREAM XE
Instruction Manual
HASXEE-IM-HS
10/2012
1.7 X-STREAM XEXF Field Housings
213545
1 Cable gland for power cable
2 Cable glands for signal cables
3 4 brackets for wall-mounting
4 Gas in- & outlets (max. 8)
5 Cutouts, to combine 2 housings (here closed)
Fig. 1-11: X-STREAM XEF - Right Side and Bottom View
Note!
In case of XDF, the cable glands are
located at the upper compartment, while
the gas in- & outlets are at the bottom
side of the lower compartment.
Also only 2 brackets are at each compartment.
Emerson Process Management GmbH & Co. OHG1-22
Instruction Manual
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10/2012
X-STREAM XE
1.7 X-STREAM XEXF Field Housings
Technical Description
1
(shown with front
panel removed)
1 Screw-type terminals for signal cables
2 Power line lter
3 Cable glands
4 Power supply terminals with integrated fuses
5 Ethernet and USB connectors
Fig. 1-12: X-STREAM XEF - Power Supply and Signal Terminals
13245
Note!
In case of XDF, the terminals and
connectors are located at the upper
compartment, while physical compo-
nents and gas ttings are in the lower
compartment.
Emerson Process Management GmbH & Co. OHG 1-23
Instruction Manual
X-STREAM XE
HASXEE-IM-HS
10/2012
1.7 XEXF Field Housings in Hazardous Areas
1.7.1 Field Housings XEXF for Installation in Hazardous Areas (Ex-Zones & Divisions)
EXPLOSION HAZARD
X-STREAM XEXF eld housings CAN NOT be used in explosive environments
(hazardous areas) without additional safety features.
This instruction manual does NOT describe the special conditions necessary
to operate gas analyzers in hazardous areas.
Please refer to the separate instruction manual supplied with units for use
in hazardous areas.
Special X-STREAM eld housing analyzer mo-
dels can be used in Ex-zones 2 or Division 2:
X-STREAM XEFN/XDFN:
Analyzer with non-sparking protection for
measuring non-ammable gases in European
Ex-zone 2 and North-American Division 2 areas:
the customized conguration of this instrument
ensures that, when used correctly, no sparks,
hot surfaces etc. which could ignite an explosive
ambient atmosphere are generated. No further
measures, such as a supply of protective gas,
are necessary.
X-STREAM XEFS/XDFS:
Equipped with a simplified pressurization
system, these eld housings can be used to
measure non-ammable gases in European
Ex-zone 2. A protective gas (e.g. pressurized
air) must be supplied when operating this model.
X-STREAM XEFZ/XDFZ:
Equipped with a simplied pressurization sy-
stem, these models can be used to measure
non-ammable gases in American zone Div 2.
A protective gas (e.g. pressurized air) must be
supplied when operating this model.
Please contact your local EMERSON Process
Management ofce if you require analyzers
feature is its ameproof housing ( Fig.
1-13 ). This enables its use in Ex-zone 1 ha-
zardous environments. With a protection type
of IP66/NEMA Type 4X and sturdy cast aluminum housing designed for wall-mounting, it
can also be used in other tough environments.
IPx6: In case of occasional ooding, e.g.
heavy seas, water shall not enter in harmful
quantities
IP6x: Protection against penetration by dust.
Live or internal moving parts are completely
protected.
Up to ve measuring channels in various com-
binations can be installed in the X-STREAM
XEFD. The physical components can optio-
nally be encased in a cover. This separate
volume can be held at a specic temperature
of up to 60 °C to minimize interference from
changes in external temperature.
Front panel
The analyzer’s display is
impact tested glass for enhanced protection
against breakage in harsh environments.
Electrical connections
Electrical connections are made via internal
screw-type terminals; the corresponding
cables are fed through cable inlets on the un-
protected by an
derside of the unit into the housing (
1-14 ). The front of the unit opens downwards
once the screws located on the surrounding
ange are removed
Connection to power supply
Mains power is connected via screw-type
terminals with integrated fuses, located in
the front right-hand area of the housing. The
internally mounted wide range power supp-
ly unit ensures, the analyzers can be used
worldwide.
Interface signals
Up to two digital I/O cards may be installed,
where terminal strip for the rst digital I/O card
is marked "X4.1" while the second is "X4.2"
on a label near the terminals.
Detailed technical details on the various inter-
faces can be found at
ration of the screw-type terminal adapters are
described in Chapter 4 'Installation'and
the software settings in Chapter 6 'User
interface and software menus'.
Gas connections
Depending on the conguration of the unit
(number of channels, series or parallel piping), up to eight ame arresters are provi-
ded for the supply of sample and calibration
.
2-2. The congu-
Fig.
Technical Description
1
EXPLOSION HAZARD
The special conditions for installing and operating analyzers in hazardous
areas are not covered by this manual!
Read the separate instruction manuals shipped together with instruments
intended to be installed in hazardous areas!
Emerson Process Management GmbH & Co. OHG 1-25
X-STREAM XE
Instruction Manual
HASXEE-IM-HS
10/2012
1.8 X-STREAM XEFD
gases. The assignments of the connectors is
given on an adhesive label situated near the
connectors.
Optional two of the ttings may be used to
purge the housing
from the ambient atmosphere,
to minimize interference
or
when measu-
ring corrosive and/or ammable gases. In this
situation special conditions apply for operation
in hazardous areas, described in the separate
manual addendum for hazardous areas.
transport
lug
screws for
housing
Fig. 1-13: X-STREAM XEFD - Front View
transport
lug
hinges
Emerson Process Management GmbH & Co. OHG1-26
Instruction Manual
HASXEE-IM-HS
10/2012
X-STREAM XE
1.8 X-STREAM XEFD
Technical Description
1
1 Cable inlets for power and signal cables
2 Gas tube ttings, protected by ame arrestors
3 4 brackets for wall mounting
4 Transport lug
Fig. 1-14: X-STREAM XEFD - Bottom View
The model X-STREAM XEFD, intended for outside and wall mounted use,
weighs approx. 63 kg (139 lb), depending on options installed.
Two people and/or lifting equipment is required to lift and carry these units.
Use the transport lugs located on the sides of the instrument.
Take care to use anchors and bolts specied to be used for the weight of
the units!
Take care the wall or stand the unit is intended to be installed at is solid
and stable to support the weight!
12343
HEAVY INSTRUMENT
Emerson Process Management GmbH & Co. OHG 1-27
X-STREAM XE
Instruction Manual
HASXEE-IM-HS
10/2012
1.8 X-STREAM XEFD
(shown with front
panel removed)
1 Terminals for signal cables (shown fully populated)
2 Power line lter
3 Cable inlets for power and signal cables
4 Power supply terminals with integrated fuses
5 Ethernet and USB connectors
Fig. 1-15: X-STREAM XEFD - Terminals
14235
Emerson Process Management GmbH & Co. OHG1-28
Instruction Manual
HASXEE-IM-HS
10/2012
Chapter 2
Technical Data
This chapter contains all the technical details
of the analyzers, divided into common and
model-specic data.
Common technical data page 2-2
X-STREAM XEGK page 2-6
Degree of pollution2
Installation categoryII
Elevation0 to 2000 m (6560 ft) above sea level
Ambient atmosphere
Certication
Electrical safety
Instruction Manual
HASXEE-IM-HS
10/2012
2.1 Common Technical Data
< 90 % RH at +20 °C (68 °F)
< 70 % RH at +40 °C (104 °F)
Units may not be operated in corrosive,
ammable or explosive environments (ex-
cept ameproof XEFD) without additional
safety measures.
CAN / USA
Europe
CSA-C/US, based on CAN/CSA-C22.2 No.
61010-1-04 / UL 61010-1, 2nd edition
CE, based on EN 61010-1
Electromagnetic
compatibility
EuropeCE, based on EN 61326
AustraliaC-Tick
othersNAMUR
Gas parameters
Chapter 3 “Measuring principles” or „4.3 Gas conditioning“ on page 4-3
Emerson Process Management GmbH & Co. OHG2-2
Instruction Manual
HASXEE-IM-HS
10/2012
X-STREAM XE
2.1 Common Technical Data
Interfaces, signal inputs and outputs
Interface signals are accessed in different ways depending on the analyzer model:
X-STREAM XEGK, XEGP:
standard: subminD plugs and sockets
optional: screw-type terminal adapters (XEGP only)
X-STREAM XEXF, XEFD:internal screw-type terminals
All versions provide 2 RJ45 plugs for Ethernet connections as well as 1 USB and 1 mini USB
connector (eld housings internally only).
All models are supplied with
up to 5 analog outputs
(standard: 1 analog output
per channel)
electrical
specication
function
4 (0)–20 mA (R
optically isolated from each other and from analyzer electronics
user-congurable activation and deactivation of
concentration levels
≤ 500 Ω)
B
support for NAMUR NE 43 operation modes, con-
gurable via keypad and Modbus
Dry relay change-over contacts,
electrical
to be used as NO or NC
specication
max. load. 30 V; 1 A; 30 W resistive
Each output can be congured to provide any of
the functions listed by
Tab. 6-1 at page 6-63.
These functions include, but are not limited to
4 relay outputs
function
NAMUR NE 107 status signals 'Failure', 'Main-
tenance request', 'Out of specication', 'Function
check' (these signals are automatically congured
Fail Safe),
concentration alarms (can manually be congured
Fail Safe),
control signals for external valves or pumps,
and many more
2 Modbus interfacesEthernet (RJ45 sockets)
specication USB 1.0
Technical Data
2
1 USB connector type A,
2 USB ports
for connecting external storage devices
function
1 USB connector type mini AB,
for connecting external computers
Emerson Process Management GmbH & Co. OHG 2-3
X-STREAM XE
2.1 Common Technical Data
Optional interfaces for all models
Digital I/O board
7 or 14 digital inputs
(X-STREAM XEGK: max. 7 inputs)
9 or 18 additional relay outputs
(X-STREAM XEGK: max. 9 add.
outputs)
electrical
specication
function
electrical
specication
function
Instruction Manual
HASXEE-IM-HS
10/2012
max. 30 V, internally limited to 2.3 mA
HIGH: min. 4 V; LOW: max. 3 V
common GND
Each input can be congured to any of the
functions listed by
, e. g.
6-72
Tab. 6-4 at page
Open valve
Activate sample gas pump
Zero calibrate all channels
Span calibrate all channels
Zero and span calibrate all channels
Abort calibration
Dry relay change-over contacts can be
used as NO or NC
max. load. 30 V; 1 A; 30 W resistive
Each output can be congured to provide
any of the functions listed by
Tab. 6-3
at page 6-69 .
These functions include, but are not limited
to
NAMUR NE 107 status signals 'Failure',
'Maintenance request', 'Out of specication', 'Function check' (these signals are
automatically congured Fail Safe),
concentration alarms (can manually be
congured Fail Safe),
control signals for external valves or
pumps,
and many more
Emerson Process Management GmbH & Co. OHG2-4
Instruction Manual
HASXEE-IM-HS
10/2012
2.1 Common Technical Data
Optional interfaces for all models
Analog I/O board
electrical
specication
X-STREAM XE
0–1 V, 0–10 V (software selectable)
= 100 kΩ
R
in
optional (requires to t wire bridges,
Chapter 4 'Installation'):
0–20 mA ; R
optically isolated from analyzer GND
= 50Ω
in
2 Analog inputs
Serial Interface
1 Interface
Special Interface
Service Interface
1 Serial
protected against overload up to ±
20 mA
±
15 V or
Input analog signals from external devices,
such as e.g.
function
pressure transmitters,
ow sensors,
analyzers, etc.
for compensation or other purposes
electrical
specication
9-pin,optically isolated from analyzer electronics
functionRS232E, RS485 or Modbus
electrical
specication
RS232E,
NOT optically isolated from analyzer electronics
functionOnly for special trained service personnel!
Technical Data
2
Emerson Process Management GmbH & Co. OHG 2-5
X-STREAM XE
2.2.1 Model-Specic Technical Data: X-STREAM XEGK
2.2 Model-Specic Technical Data
2.2.1 X-STREAM XEGK: ½19 Inch Tabletop Unit
Instruction Manual
HASXEE-IM-HS
10/2012
All dimensions in mm [in]
Fig. 2-1: X-STREAM XEGK - Dimensions
Emerson Process Management GmbH & Co. OHG2-6
Instruction Manual
HASXEE-IM-HS
10/2012
2.2.1 Model-Specic Technical Data: X-STREAM XEGK
X-STREAM XE
Front panel detail
6 screws (M 2.5) for rack mounting
or afxing frame & handle
Frame and handle detail
Technical Data
2
Standard I/Os, analog inputs, DC supply, valve block
Portable with handle, standard I/Os, digital I/Os, ACsupply, standard gas ttings
Note!
The shown rear panel options are interchangable!
Fig. 2-2: X-STREAM XEGK - Rear Panel and Handle Variations
Emerson Process Management GmbH & Co. OHG 2-7
X-STREAM XE
2.2.1 Model-Specic Technical Data: X-STREAM XEGK
Temperatures
operational, max.
*)
storage-20 … +70 °C / -4 … -158 °F
Weight, max8 … 12 kg / 17.6 … 26.5 lb
0 … +50 °C / 32 … 122 °F
Instruction Manual
HASXEE-IM-HS
10/2012
IP or Type rating
protected against dripping water and direct sun light
IP 20 for indoor use,
Measurement channels, max.3
Gas connections
max number8
max for purging
(incl. / separate)
2 incl.
materialPVDF; stainless steel (opt.)
1
sizes6/4 mm;
⁄4"
Power supply unitexternal; alternatively: internal wide range P/S
Power supply
nominal voltageDC 24 V100–240 V
voltage rangeDC 10–30 V85–264 V
Mains supply voltage uctuations are not to exceed
± 10 percent of the nominal voltage
50 / 60 Hz
47–63 Hz
nominal input current, max2.5 A1.3–0.7 A
Power input fuses
AC 230 V / T 3.15 A
5x20 mm (1 pcs)
AC 230 V / T 4 A
5x20 mm (2 pcs)
Electrical in- and outputs
power
signals
3-pin XLR connector
signal cables are connected using submin-D plugs or sockets on the unit’s rear panel
specialEthernet: RJ45 socket; USB connectors
*)
: Limitations apply to selected measurement principles and ranges,
Measurement specications!
Emerson Process Management GmbH & Co. OHG2-8
IEC connector with integrated
power switch & fuse holders
Instruction Manual
HASXEE-IM-HS
10/2012
X-STREAM XE
2.2.1 Model-Specic Technical Data: X-STREAM XEGK
2.2.1.1 Data for Optional External Power Supply Units
Model UPS 01 T
This PSU can be ordered as an option for supplying power to one tabletop unit.
54.2
57.7
All dimensions in mm [in]
105.9
IEC power input socket
PE
275.3
Fig. 2-3: UPS 01 Tabletop Power Supply Unit
Pin 1: ME
Pin 2: + 24 V
Pin 3: 0 V (⊥)
shield: housing ange
Pin conguration for 24 V DC output socket
(shielding)
2
Nominal input voltage120 / 230 V 50/60 Hz
Input voltage range95–138 V / 187–264 V, 47–63 Hz
Power consumptionmax. 240 VA
Input
via rubber connector (IEC plug;
Fig. 2-3
).
Power input fusesThe PSU does not include user-replaceable fuses.
Nominal output voltage 24 V
(± 5 %)
Nominal output current5 A
,
Surge protection
Excess temperature protection
current limiting typ. 110 % I
short-circuit-proof
reduction of output voltage to disconnection. Resets
after cooling.
straight response curve,
nom
Output3-pin XLR socket
Weightapprox. 2.5 kg (4.8 lb)
Certication
SafetyEN 60950, UL1950, CSA22.2 NO 950-95
EMC
EN 50081-1 (emitted interference)
rence resistance), et al
EN 50082-2 (interfe-
Technical Data
13
2
Emerson Process Management GmbH & Co. OHG 2-9
X-STREAM XE
2.2.1 Model-Specic Technical Data: X-STREAM XEGK
This PSU can optionally be ordered for rack installation.
Two variations are available:
• with blind front panel, connectors at the rear side
• with rear panel, connectors to the front.
Both variations are xed to the rack by means of screws at the panels.
Instruction Manual
HASXEE-IM-HS
10/2012
Fig. 2-4: UPS 01 Power Supply Unit for Rack Installation
Emerson Process Management GmbH & Co. OHG2-10
Instruction Manual
HASXEE-IM-HS
10/2012
X-STREAM XE
2.2.1 Model-Specic Technical Data: X-STREAM XEGK
Model 10 A tabletop PSU
This PSU can optionally be ordered for powering 2 tabletop units with a single common power
supply.
IEC power input connector
with fuse-holder
PE
Pin 1: ME
2
3
1
All dimensions in mm [in]
Fig. 2-5: 10 A Tabletop PSU
Pin 2: + 24 V
Pin 3: 0 V (⊥)
frontrear
shield: housing ange
Pin conguration for 24 V DC output socket
Nominal input voltage100–120 / 220–240 V 50/60 Hz
(Nominal voltage not to be changed by operator)
Input voltage range85–132 / 176–264 V, 47–63 Hz
Input currentmax. 240 VA
115 V setting< 6 A
230 V setting< 2.8 A
Input
via rubber connector (IEC plug;
Fig. 2-5
).
Power input fusesAC 230 V / T 6.3 A / 5x20 mm
Nominal output voltage 24 V
(+ 5 / -1 %)
Power losstyp. 29 W (230 V; 24 V, 10 A)
Nominal output currentmax. 10 A, limited to 5 A per output
Surge protection
protection against short-circuits, power surges and no-load
running
Excess temperature protection derating from 60 °C /140 °F
Outputtwo 3-pin XLR socket
Weightapprox. 2 kg / 4.4 lb
Compliances
SafetyEN 60950, EN 50178, UL1950, UL/CSA-22.2 No 950-M90
EMC
EN 50081-1, class B (emitted interference), EN 50082-2,
class A (interf. resistance), et al
Recommended clearance
15 mm / 0.6" in front and behind
(shielding)
Technical Data
2
Emerson Process Management GmbH & Co. OHG 2-11
X-STREAM XE
2.2.2 Model-Specic Technical Data: X-STREAM XEGP
2.2.2 X-STREAM XEGP: 19 Inch Tabletop and Rack-Mount Models
approx. values in mm [in]
Instruction Manual
HASXEE-IM-HS
10/2012
Strain relief bracket, detail
(model with clamping adapters)
Fig. 2-6: X-STREAM XEGP - Dimensions
X: Height of rear panel cover for
tO2 cell: 10 mm [0.39]
eO2 cell: 36 mm [1.42]
X
Emerson Process Management GmbH & Co. OHG2-12
Instruction Manual
HASXEE-IM-HS
10/2012
X-STREAM XE
2.2.2 Model-Specic Technical Data: X-STREAM XEGP
Temperatures
operational, max.
*)
0 … +50 °C / 32 … 122 °F
storage-20 … +70 °C / -4 … -158 °F
Weight, max12 … 16 kg / 26.5 … 35.3 lb
IP or Type rating
protected against dripping water and direct sun light
IP 20 for indoor use,
Measurement channels, max.5
Gas connections
max number8
max for purging
(incl. / separate)
1 separate.
materialPVDF; stainless steel (opt.)
1
sizes6/4 mm;
⁄4"
Power supply unitwide range, internal
Power supply
nominal voltage100–240 V
voltage range85–264 V
Mains supply voltage uctuations are not to exceed
± 10 percent of the nominal voltage
50 / 60 Hz
47–63 Hz
nominal input current, max
standard, max1.3–0.7 A
w/ temperature control, max3–1.5 A
Power input fusesAC 230 V / T 4 A / 5x20 mm
Technical Data
2
Electrical in- and outputs
powerIEC connector with integrated power switch & fuse holders
signals
optional
signal cables are connected using submin-D plugs or sockets on the unit’s rear panel
terminals adaptors, to be installed onto the submin-D connectors
specialEthernet: RJ45 socket; USB connectors
*)
: Limitations apply to selected measurement principles and ranges,
Emerson Process Management GmbH & Co. OHG 2-13
Measurement specications!
X-STREAM XE
2.2.2 Model-Specic Technical Data: X-STREAM XEGP
Instruction Manual
HASXEE-IM-HS
10/2012
1 Power connector
2 Fuse holder
Fig. 2-7: X-STREAM XEGP - Power Supply and Signal Connections
1 Strain relief with cable shieldgrounding clamps (quantity varies
depending on installed options)
12
2 Terminal adapters
3 Power switch
4 Signal connectors
(some optional)
3124
Terminal adapters (detail)
Fig. 2-8: X-STREAM XEGP - Signal Connections With Screw-Type Terminal Adapters (Top View)
Emerson Process Management GmbH & Co. OHG2-14
Instruction Manual
HASXEE-IM-HS
10/2012
X-STREAM XE
2.2.3 Model-Specic Technical Data: X-STREAM XEXF Field Housings
2.2.3 X-STREAM XEXF: Field Housing With (XEF) Single or (XDF) Dual Compartment
Cable glands
All dimensions in mm
[inches in brackets]
Gas ttings
Technical Data
2
Connector
for potential
equalization
Fig. 2-9: X-STREAM XEF - Dimensions
Emerson Process Management GmbH & Co. OHG 2-15
X-STREAM XE
2.2.3 Model-Specic Technical Data: X-STREAM XEXF Field Housings
All dimensions in mm
[inches in brackets]
Instruction Manual
HASXEE-IM-HS
10/2012
Gas ttings
Connector
for potential
equalization
Cable glands
Fig. 2-10: X-STREAM XDF - Dimensions
Emerson Process Management GmbH & Co. OHG2-16
Instruction Manual
HASXEE-IM-HS
10/2012
X-STREAM XE
2.2.3 Model-Specic Technical Data: X-STREAM XEXF Field Housings
Temperatures
operational, max.
*)
0 (-20) … +50 °C / 32 (-4) … 122 °F
storage-20 … +70 °C / -4 … -158 °F
Weight, max
XEF (single)up to approx. 25 kg / 55.1 lb
XDF (dual)up to approx. 45 kg / 99.2 lb
IP or Type rating
IP 66, Type 4X for outdoor use,
protected against direct sun light
Measurement channels, max.5
Gas connections
max number8
max for purging (incl. / separate)1 separate.
materialstainless steel
1
sizes6/4 mm;
⁄4"
Power supply unitwide range, internal
Power supply
nominal voltage100–240 V
Mains supply voltage uctuations are not to exceed
± 10 percent of the nominal voltage
50 / 60 Hz
voltage range85–264 V 47–63 Hz
nominal input current, max
XEF
standard, max1.3–0.7 A
w/ temperature control, max3–1.5 A
XDF
Technical Data
2
standard, max1.5–0.8 A
w/ temperature control, max5.5–3 A
Power input fusesAC 230 V / T 6.3 A / 5x20 mm
Electrical in- and outputs
1 Ethernet & USB
2 Analog & digital I/O terminal strips
3 Max. 3 signal cables entries
Fig. 2-15: X-STREAM XEFD - Signal Terminals
Emerson Process Management GmbH & Co. OHG 2-21
Note!
Depending on the actual analyzer conguration
not all shown terminal strips may be installed!
X-STREAM XE
2.3 Information on Name Plate
2.3 Information on Name Plate
Instruction Manual
HASXEE-IM-HS
10/2012
The name plate provides details on the conguration of the unit, installed measuring techniques, sample gases and measuring ranges.
It also indicates the unit’s serial number.
The plate is located on either the side or the
rear of the unit.
1
XEGK, XEGP
Note!
XEGK max. 3 channels!
Field housings
3
4
1
2
Note!
Analyzers congured to be installed in hazardous areas have special name plates,
described in the associated manuals.
IR UV UV eO2
NO:FS 150 … 5000 ppm
:FS 100 … 5000 ppm
SO
2
IR UV UV IR eO2
11912345678
NO
O
11812345678
:FS 100 … 5000 ppm
2
:FS 5 … 25%
2
5
6
8
2
9
10
3 …7
1 Model and installed measuring techniques (here: 1x resp. 2x IR & 2x UV & electrochemical O
2 Serial number
3 Channel 1: Gas and full scale ranges (here: NO, 150 to 5000 ppm)
4 Channel 2: Gas and full scale ranges (here:SO
5 Channel 3: Gas and full scale ranges (here: NO
6 Channel 4: Gas and full scale ranges (here:CO
7 Channel 5: Gas and full scale ranges (here:O
8 Manufacturer´s address
9 Certication marks (XEGK, XEGP: on a separate label)
10 Electrical data (XEGK, XEGP: on rear panel)
Fig. 2-16: Analyzer Name Plate (examples)
NO:FS 150 … 5000 ppm
SO
:FS 100 … 5000 ppm
2
NO2:FS 100 … 5000 ppm
:FS 100 … 1000 ppm
CO
2
:FS 5 … 25 %
O
2
, 100 to 5000 ppm)
2
, 100 to 5000 ppm)
2
, 100 to 1000 ppm)
2
, 5 to 25 %)
2
8
)
2
Emerson Process Management GmbH & Co. OHG2-22
Instruction Manual
HASXEE-IM-HS
10/2012
X-STREAM XE
Chapter 3
Measuring Principles
X-STREAM series analyzers support several
measuring principles depending on the gas
component of interest. This provides best
possible results, as the measurement can be
chosen to optimally t the characteristics of
the gas to be measured with respect to the
application. The following sections introduce
the available measuring principles highlighting
their specic characteristics.
absorption lines can be used to identify gas
components. The amount of light absorbed
by the absorption lines is a direct measure
of the gas concentration.
One can distinguish between two different ty-
pes of non-dispersive measurements differing
how wavelength selectivity is accomplished.
It is essential for gas specic concentration
measurements, to selectively detect only light
of the absorption line wavelengths of the gas
of interest. T ypically a gas selective detector is
used for NDIR measurements. For NDUV the
selectivity is achieved by an additional optical
lter, as the detector itself is not wavelength
selective. In some applications, a pyrodetector
is used for NDIR measurements. This type of
detectors is not wavelength selective, hence
these setups also use an optical lter to narrow
their wavelength response function.
The assembly of a NDIR and NDUV channel is
shown in Fig. 3-3. For NDIR a broad-band IR
light source is used to generate the light, while
NDUV measurements utilize a narrowband UV
uorescence source, already adopted for the
absorption lines of the gas of interest. Part of
this adoption is done by a specially selected
optical lter in the adaptor cell.
The diameter of the light beam emitted from
the sources is adjusted to completely ll the
opening of the split analysis cell. After traver sing the analysis cell, the light passes through
a lter cell which adjusts the beam diameter to
the chopper opening and the diameter of the
active detector area. The chopper wheel used
is designed to allow an intrinsically referenced
measurement. The details of this new patent
pending method are described in section 3.1.1.
Which measurement (UV / IR) to use for
a specic application depends on the gas
component to be measured and the required
measurement performance.
3.1.1 IntrinzX Technology
The IntrinzX technology is an enhancement
of the well established “proof peak” technology with automatic sensitivity control, known
from the MLT gas analyzer series. While the
“proof peak” provided only one reference
measurement per chopper wheel revolution,
the IntrinzX technology provides four reference
measurements per revolution. The patent
pending IntrinzX technology has been introduced into the market with the launch of the
X-STREAM X2 gas analyzers.
Using the new IntrinzX chopper wheel, the
reference and the measurement signal are
Measuring Principles
3
Emerson Process Management GmbH & Co. OHG 3-1
X-STREAM XE
3.1 Infrared (IR) and Ultraviolet (UV) Measurement
Instruction Manual
HASXEE-IM-HS
10/2012
modulated with 4 and 5 times the basic revolution frequency, respectively. As a result,
the proof peak process is integrated into the
measurement information, in contrast to being
articially inserted in the measurement signal.
Frequency ltering separates the sum signal
into measurement and reference signal ( Fig.
3-1). This results in a permanently referenced
signal by dividing the integrated reference
level by the integrated measurement level for
each revolution.
Therefore the IntrinzX technology provides
many outstanding features:
• High dynamic measurement ranges (e.g.
0-200 to 50,000 ppm CO), which cannot
be obtained with standard photometric
technologies
• Reduced temperature dependency
•
High sensitivity for lowest measuring
ranges
This leads to cost saving effects for the customer:
•
One bench enables measurements of low
& high ranges
•
Low & high concentration in raw and clean
gases
• Small and large ranges before and after
scrubbers
•
Measurement of carbon bed breakthrough
/ catalyst efciency
•
Mobile measurements at different sampling
points / locations
•
Easy adaption to different applications
(universities, laboratories)
• Supports automotive engine testing
• Benches to be used in TOC applications
for measurements of low and high carbon
content
• Fewer number of benches & cells
•
Easier eld repair and replacement of parts
•
Easy adjustment of low measuring ranges
in the eld
• Reduced maintenance
• Extended span calibration intervals
• Minimized demand for test gases
Due to the inherent correlation between refe-
rence and measurement side, span calibration
can often be achieved by zero calibration.
The above listed IntrinzX features offer a
high degree of exibility with regards to ap-
plications:
0 % absorption50 % absorption100 % absorption
Fig. 3-1: IntrinzX Signal Forms
Emerson Process Management GmbH & Co. OHG3-2
Instruction Manual
HASXEE-IM-HS
10/2012
3.1 Infrared (IR) and Ultraviolet (UV) Measurement
3.1.2 NDIR Detector
The standard detector used for NDIR measurements is an opto pneumatic detector. It con-
sists of two chambers, lled with gas and
connected via a small channel (Fig. 3-2).
The gas lling is chosen to provide maximum
overlap with the gas to be measured. Usually
the gas to be measured itself is used.
A micro ow sensor, placed in the connecting
channel, measures the ow between both
chambers. As light is absorbed by the gas in
the absorption chamber the gas temperature
changes resulting in an increase of volume of
the heated gas. The gas expands and ows
towards the compensation chamber. When
the chopper closes, no light is absorbed and
thus temperature and volume of the gas in the
absorption chamber decrease. Gas ows back
from the (now) hotter compensation chamber
into the absorption chamber. The absolute
ow, detected by the micro ow sensor, in
both cases is therefore a measure for the
light absorbed while the chopper is open. This
directly correlates to the amount of light not
absorbed in the analysis cell and therefore
to the concentration of the measurement gas
inside the analysis cell.
Using the divided analysis cell and the IntrinzX
chopper wheel enables simultaneous detection
of measurement and reference signal.
X-STREAM XE
Absorption chamber
Window
Compensation chamber
Fill nozzle
Connecting channel
with
micro ow detector
Fig. 3-2: Gas Detector Design Principle
Measuring Principles
3
Emerson Process Management GmbH & Co. OHG 3-3
X-STREAM XE
3.1 Infrared (IR) and Ultraviolet (UV) Measurement
3.1.3 Technical Implementation
Instruction Manual
HASXEE-IM-HS
10/2012
The radiation emitted by an IR or UV/EDL
source passes an adaptor cell, widening the
beam to completely ll out the analysis cell´s
diameter. At the opposite side of the cell,
another adaptor cell is installed to reduce
the beam to the diameter of the opening in
the chopper.
The detectors are installed at the rear side
7 IR detector electronics
8 Pyro detector (alternatively)
9 Temperature sensor
10 Filter for pyro detector assembly
11 Chopper
12 Chopper electronics
13 IR source
14 EDL
Emerson Process Management GmbH & Co. OHG3-4
Instruction Manual
HASXEE-IM-HS
10/2012
3.2 Oxygen Measurement
X-STREAM XE
3.2 Oxygen Measurement
Three different principles are used for measuring oxygen concentrations. The principle
used in your specic instrument is given by the
channel code (sample gas designator) on the
nameplate label ( gure on page 2-22):
pO
= paramagnetic sensor
2
eO
= electrochemical sensor
2
tO
= trace oxygen sensor
2
3.2.1 Paramagnetic Measurement
This oxygen measurement principle is based
on the paramagnetic characteristic of oxygen
molecules:
Two cavernous glass spheres lled with nitro-
gen are arranged in a dumb¬bell conguration.
This dumbbell with a platinum wire is mounted
rotatable inside a strong inhomogeneous ma-
gnetic eld. A small mirror is xed on the front
side of the dumbbell, which reects light from a
light source towards two photo detectors (Fig.
3-4). The dumbbell is surrounded by another
platinum wire, which is bent like a coil around
each glass sphere. It generates a magnetic
eld when supplied by an electric current to
control the dumpbell´s deection.
Oxygen molecules within the sample gas
are attracted be the magnetic eld due to
their paramagnetic characteristic and will
be concentrated into the area of the highest
eld strength in the inhomogeneous eld.
In doing so they displace the nitrogen lled
glass spheres. This generates a torque on
the dumbbell which depends on the oxygen
concentration in the sample gas. The dumbbell
starts to rotate and the light reected by the
mirror on the dumbbell generates a signal on
one of the two photo detectors. Initiated by the
photo detector signal a preamplier drives a
current through the platinum wire surrounding
the dumbbell. This generates a compensating
magnetic eld and rotates the dumbbell back
into its zero position. The compensating current gives a direct and linear measure for the
oxygen concentration within the sample gas.
The paramagnetic oxygen detector also
con¬tains a temperature sensor for compen-
sation and a heating ele¬ment to keep the
detector at approx. 55 °C.
Several variations are available including
corrosion resistant, solvent resistant and/or
intrinsically safe (for measuring ammable
gases) versions.
10
415368
1 Permanent magnet
2 Platinum wire
3 Mirror
4 Glass ball
5 Loop
Fig. 3-4: Paramagnetic Oxygen Sensor -
Assembly Principle
1179
2
6 Photodetector
7 Light source
8 Preamplier
9 Display
10 Gas inlet
11 Gas outlet
Measuring Principles
3
Emerson Process Management GmbH & Co. OHG 3-5
X-STREAM XE
3.2 Oxygen Measurement
3.2.1.1 Cross Interferences by Accompanying Gases
The Table below by selected gases shows,
how accompanying gases interfere the paramagnetic oxygen measurement. A comprehensive list of gases and their cross interferences
is given in the standard IEC 61207-3.
If the concentration of such gases is already
given at time of enquiry , this interference may
9 Pressure compensating volumes
10 Lid
1 1 Electrical connections
12 Lids
13 Current collector
Fig. 3-5: Electrochemical O2 Sensor -
Design Principle
Sensor inserted
into holder
Fig. 3-6: Electrochemical O2 Sensor - Assembly
Emerson Process Management GmbH & Co. OHG3-8
Instruction Manual
HASXEE-IM-HS
10/2012
X-STREAM XE
3.2 Oxygen Measurement
(red)(black)
Thermistor (5)
(-)
Gold
cathode (2)
Electrochemical reaction:
Fig. 3-7: Electrochemical Reaction of Oxygen Sensor
In consequence of its design the sensor‘s
lifetime is limited and depends on theoretical
designed life and oxygen concentration. The
sensor output can be taken as a rough criterion
for end of lifetime: The sensor is weared when
the output in atmosphere is below 70 % of
the initial output. The period till this can be
calculated by
(11)
Resistance (6)
(+)
Lead
anode (1)
Electrolyte (3)
Measuring Principles
3
Lifetime =
designed life (% hours)
O
concentration (%)
2
The sensor‘s designed lifetime under constant
conditions of ambient temperature 20 °C is
approx. 900,000 % hrs.
The lifetime at 21 % oxygen is then calculated
to approx. 42,857 hrs, corresponding to
approx. 5 years.
An indicator for end of lifetime is a reduced
output signal. In this case the sensor must be
replaced to ensure accurate measurements
( Chapter 7 "Maintenance").
Note!
The given values are for reference only! The
expected lifetime is greatly affected by the
temperature of the environment in which the
sensor is used or stored (operation at 40 °C
halves lifetime).
Increases or decreases in atmospheric pressure have the same effect as increasing or
decreasing oxygen concentrations.
Emerson Process Management GmbH & Co. OHG 3-9
X-STREAM XE
3.2.2.1 Special Hints
Instruction Manual
HASXEE-IM-HS
10/2012
3.2 Oxygen Measurement
Due to the measuring principle the electrochemical oxygen cell requires a minimum
internal consumption of oxygen (residual
humidity avoids drying of the cell). Supplying
cells continuously with dry sample gas of low
grade oxygen concentration or with sample
gas free of oxygen could result in a reversible
detuning of O
sensitivity . The output signal will
2
become unstable, but response time remains
constant.
For correct measurement the cell needs con-
tinuously to be supplied with concentrations
of at least 0.1 Vol.-% O
. We recommend to
2
use the cells if need be in alternating mode,
means to purge cells with conditioned (not
dried, but dust removed) ambient air when
measurement pauses.
If it is necessary to interrupt the oxygen sup-
ply for several hours or days, the cell has to
regenerate (supply cell for about one day with
ambient air). Temporarily ushing with nitrogen
If the XEGP analyzer features thermostate
control, the eO2 sensor block is installed at
the XEGP rear panel.
Cover
Fig. 3-8: Cover for EO2 Sensor Block At Rear Panel
Tab. 3-4:
Electrochemical Oxygen Measurement -
Cross Interference by Accompanying
Gases
Emerson Process Management GmbH & Co. OHG3-10
Instruction Manual
4OH−+2Pb → 2P bO +2H2O +4e
−
4e−+2H2O + O2→ 4OH
−
2Pb+ O2→ 2P bO
2
O +O2→4OH
-
2
O+4e
-
2
→2PbO
HASXEE-IM-HS
10/2012
3.2 Oxygen Measurement
3.2.3 Electrochemical Trace Oxygen Measurement
X-STREAM XE
For trace oxygen measurements (tO
electrochemical sensor technology is used,
see Fig. 3-9. The sensor is a self contained
disposable unit which requires no maintenance. The sensor utilizes the principle of
electrochemical reaction to generate a signal
proportional to the oxygen concentration in
the sample.
Fig. 3-9: Trace Oxygen Sensor Design Principle
The sensor consists of a cathode and anode
which are in contact via a suitable electrolyte.
The sensor has a gas permeable membrane
which covers the cathode allowing gas to
pass into the sensor while preventing liquid
electrolyte from leaking out.
As the sample diffuses into the sensor, any
oxygen present will dissolve in the electrolyte solution and migrate to the surface of
the cathode. The oxygen is reduced at the
cathode. Simultaneously, an oxidation reaction is occurring at the anode generating four
electrons. These electrons ow to the cathode
to reduce the oxygen.
The representative half cell reactions are:
anode:
cathode:
in total:
Gas Permeable Membrane
Thin Electrolyte Layer
Electrolyte
Anode
Current Signal
OH
Oxygen
-
2
-
e
Contact Plates
)another
Cathode
This ow of electrons constitutes an electric
current which is directly proportional to the
concentration of oxygen present in the sam-
ple. In the absence of oxygen, no oxidation/
reduction reaction occurs and therefore no
current is generated. This allows the sensor
to have an absolute zero.
3.2.3.1 Special Hints
This sensor is a consumable
and requires replacement periodically. (To determine if the
sensor requires replacement,
see the troubleshooting section
of this manual)
Remaining lifetime counts down
when the sensor is in contact
with oxygen.
For above reasons, the analyzer
is shipped with the sensor as
extra item in a sealed bag!
The sensor must be installed
before analyzer startup, according the instructions shipped
with the sensor!
Always consult the separate
instructions, shipped with the
sensor , before intending to start
calibrations! Violation may result in a damaged sensor!
Prolonged exposure of the sensor to air can
cause extended start up time, reduction of
Measuring Principles
3
Emerson Process Management GmbH & Co. OHG 3-11
X-STREAM XE
Instruction Manual
HASXEE-IM-HS
10/2012
3.2 Oxygen Measurement
performance or damage to the sensor . Do not
remove the sealing caps until all associated
sample handling components are installed and
the instrument is fully ready for installation.
After replacement purge gas paths with inert
gas (nitrogen (N
) or sample gas as soon as
2
possible to avoid prolonged exposure of the
sensor to high concentrations of oxygen. The
longer the sensor is exposed to air , the longer
it will take for the sensor to recover to low
ppm levels. When installing a new sensor or
starting the instrument for the rst time, it may
take as long as eight hours for the analyzer
to purge down to the lowest operating range.
After initial startup or startup following a prolonged shutdown, the analyzer may require
extended time to recover to the range of
measurement. Commonly, this is caused by
the introduction of ambient air into the sample
and/or vent lines to the sensor. The presence
of higher than normal levels of oxygen at the
sensor will cause the sensor electrolyte to become saturated with dissolved oxygen. When
the instrument is placed in operation, the sensor must now consume all excess dissolved
oxygen above the desired measuring level.
All analyzers with electrochemical tO
to be purged with inert gas (Nitrogen, N
cell have
2
) prior
2
to disconnecting the gas lines! Then the gas
line ttings have to be closed for transport or
depositing the analyzer.
While handling the sensor, always consider the documentation provided together with the
sensor, especially the information on the included material
(safety data) in the attachment
of the documentation!
Note for XEGP analyzers!
If the XEGP analyzer features a thermostate
control, the tO2 sensor block is installed at
the XEGP rear panel.
Cover
Fig. 3-10: Cover for TO2 Sensor Block At Rear Panel
Emerson Process Management GmbH & Co. OHG3-12
Instruction Manual
HASXEE-IM-HS
10/2012
3.3 Thermal Conductivity Measurement
3.3 Thermal Conductivity Measurement
X-STREAM XE
Thermal conductivity is the property of a ma-
terial that indicates its ability to conduct heat.
Thermal conductivity measurement primarily is used for measuring concentrations of
hydrogen (H2) and helium (He). These gases
are characterized by a specic thermal conducitivity, differing clearly from that of other
gases ( Tab. 3-5).
supplied, the sensors in the sample gas path
are cooled due to the thermal conductivity ef-
fect: The gas absorbs heat and carries it away
from the sensors. This tunes the Wheatstone
bridge and generates a signal proportional to
the thermal conductivity.
Additional electronics linearizes and conditi-
ons this signal to provide usefull measuring
values.Depending on application, it is possible
to supply a reference gas to the bridge‘s re-
ference side. The output signal in this case is
proportional to the difference of the thermal
conductivities of sample and reference gas.
R
R
R
S
Measuring Principles
3
U
Tab. 3-5: Examples of Specic Thermal Conducti-
vities
R
S
Br
R
R
3.3.1 Principle of Operation
A Wheatstone bridge, made of 4 temperature
sensitive resistors (PT 100 sensors), is sur-
Sample
Reference
rounded by gas in a way, that each 2 sensors
are located in the sample gas stream (RS) and
in a reference gas stream (RR), Fig. 3-1 1.
Emerson Process Management GmbH & Co. OHG 3-13
Fig. 3-11: Wheatstone Bridge
X-STREAM XE
3.3 Thermal Conductivity Measurement
3.3.2 Technical Implementation
A block made of stainless steel contains two
gas paths. Both, the volume of the block and
the mass of the sensors have been minimi-
zed in order to obtain short response times.
To suppress inuences by changing ambient
temperature the block is thermostatted and
isolated against ambience.
The sensors are fully glass packaged to withstand aggressive gases.
Instruction Manual
HASXEE-IM-HS
10/2012
1
2
3
1 Sensor
2 Sample gas inlet and outlet
3 Reference side inlet and outlet
4 Metal block
5 Heater for thermostatting
45
13452
1 Internal gas path
2 Sample gas inlet and outlet
3 PT 100 sensors
4 Metal block
5 Lid
Fig. 3-12: TC Cell, Exterior View ,
Thermal Isolation Removed
Fig. 3-13: TC Cell, Sectional View
Emerson Process Management GmbH & Co. OHG3-14
Instruction Manual
HASXEE-IM-HS
10/2012
3.4 Trace Moisture Measurement
3.4 Trace Moisture Measurement
X-STREAM XE
The Trace Moisture sensor is a robust
2-wire-transmitter, using dew point impedance measurement for continuous moisture
measurements in gases and gas mixtures.
It makes dew point measurement as accessible as temperature and pressure.
Fig. 3-14: Trace Moisture Sensor Assembly
This type of sensor is used, if dew point
measurements are required.
3
2
1
Measuring Principles
3
1 Sensor
2 Sensor block
3 Gas connections
Some denitions:
The dew point
is the temperature in Deg C
to which a given parcel of humid air must be
cooled, at constant barometric pressure, for
water vapor to condense into water. The condensed water is called dew. The dew point is
the saturation temperature.
Humidity is the amount of water vapor in the
air. Relative humidity is dened as the ratio
of the partial pressure of water vapor (in a
gaseous mixture of air and water vapor) to
the saturated vapor pressure of water at a
given temperature.
The dew point is associated with relative humidity. A high relative humidity indicates
that the dew point is closer to the current air
temperature. Relative humidity of 100 % indicates the dew point is equal to the current
temperature and the air is maximally saturated
with water. If the dew point remains constant
and temperature increases, relative humidity
will decrease.
Emerson Process Management GmbH & Co. OHG 3-15
X-STREAM XE
3.4 Trace Moisture Measurement
How does dew point measurement connect
with trace moisture measurement?
The lower the dew point of a gas, the less is
the content of moisture within that gas.
dp / °C
-1000.025
-980.038
-960.057
-940.084
-920.123
-900.179
-880.258
-860.368
-840.520
-820.729
-801.01
-781.40
-761.91
-742.59
-723.49
-704.68
-686.22
-668.22
-6410.8
-6214.1
-6018.3
-5823.5
-5630.2
-5438.5
-5248.9
-5061.8
-4877.6
-4697.1
Water / ppm
dp / °C
-44121
-42150
-40185
-38228
-36279
-34340
-32413
-30501
-28604
-26726
-24870
-221039
-201237
-181468
-161737
-142048
-122409
-102826
-83306
-63856
-44487
-25208
1012 113
Water / ppm
06030
26964
48025
69226
810 583
Instruction Manual
HASXEE-IM-HS
10/2012
3.4.1 Special Operating Conditions
The sensor is completely calibrated with all
calibration data stored in its ash memory and
does not require recalibration:
• If the sensor is included into a calibration
procedure, it might end up with a wrong
calibration and unusable sensor. Therefore
the analyzer's trace moisture measurement
channel is congured to be excluded from
autocalibration procedures, by default cali-
brating all channels. This exclusion is done
by factory setup and cannot be changed.
•
For proper measurement results we recommend to exchange the sensor regularly
after 12 months of operation.
Tab. 3-6: Dew Points and Water Content (at 1013 hPa)
Emerson Process Management GmbH & Co. OHG3-16
Instruction Manual
HASXEE-IM-HS
10/2012
3.4 Trace Moisture Measurement
3.4.2 Accompanying Gases
Several gases may affect the sensor, so consider the following limits:
X-STREAM XE
Component
Acetylene (Ethyne) C
Ammonia NH
Maximum Permitted
Concentration / ppm
2H2
1000 -20
3
1
-20
Maximum Permitted Dew-
point / °C
Aromatic alcohols no limit no limit
Benzene C
Bromine Br
Carbon dioxide CO
Carbon disulphide CS
no limit no limit
6H6
no limit -20
2
no limit no limit
2
no limit no limit
2
Carbon monoxide CO no limit no limit
Carbon tetrachloride CCl
Carbon tetrauoride CF
Chlorine Cl
Dichlorodiuoromethane CCl
Ethane C
Ethylene (Ethene) C
Ethylene oxideCH
no limit no limit
4
no limit -20
4
not permitted
2
no limit -20
2F2
no limit no limit
2H6
no limit no limit
2H4
O not permitted
4
Exhaust gases no limit no limit
Fluorine F
Glycol (Ethane-1,2-diol) HOCH
2
OH no limit no limit
2CH2
10 -20
Halogenated hydrocarbons Consult with Emerson
Hydrobromic acid HBr not permitted
Hydrochloric acid HCl not permitted
2
Hydrouoric acid HF 500 -20
Hydrogen peroxide H
Hydrogen sulphide H
2O2
S no limit 3 no limit
2
Mercury Hg not permitted
Methane CH
no limit no limit
4
not permitted
4
Methanoic acid HCOOH not permitted
Methanol CH
Methylethyl glycol C
OH
3
O no limit no limit
4H11
5
no limit
Natural gas no limit no limit
Nitric acid HNO
Nitrogen dioxide NO
Nitrous oxide N
2
3
no limit -20
2
O no limit -20
10 -20
Measuring Principles
3
Tab. 3-7: Limitations on Gases
Emerson Process Management GmbH & Co. OHG 3-17
(I)
X-STREAM XE
Instruction Manual
HASXEE-IM-HS
10/2012
3.4 Trace Moisture Measurement
Component
Oxygen O
Ozone O
Perchloric acid HClO
Phosgene COCl
Propane C
3H8
Maximum Permitted
Concentration / ppm
no limit no limit
2
3
4
no limit -20
2
no limit no limit
Maximum Permitted Dew-
point / °C
not permitted
not permitted
Sodium hydroxide NaOH not permitted
Sulphur dioxide SOSulphur hexauoride SF
Sulphur trioxide SO
Sulphuric acid H
Toluene C
Xylene C
1
Recommended sensor exchange after 6 months.
2
For renery catalytic reformer applications, consult with EMERSON.
3
Consult with EMERSON for extremely sour natural gas, >1 % H
4
Consider sacricial gold lter to remove mercury vapour – Consult with EMERSON.
Consult with EMERSON - for impedance type sensors, recommended concentration limit of Methanol <10%
5
of moisture concentration to be measured to ensure negligible interference effects.
6
At temperatures exceeding 50 °C (122 °F), the maximum concentration is 50 ppm.
no limit 6 no limit
2
no limit no limit
6
no limit -20
3
2SO4
no limit no limit
6H5CH3
no limit no limit
8H10
10 -20
S
2
The sensor should also be resistant to most organic acids, alcohols, ketones, aldehydes, esters and halogenated hydrocarbons, but will not be
resistant to very strong alkalis. If in doubt, consult with EMERSON.
Tab. 3-7: Limitation on Gases (II)
Emerson Process Management GmbH & Co. OHG3-18
Instruction Manual
HASXEE-IM-HS
10/2012
X-STREAM XE
3.5 Hydrogen Sulde (H
3.5
Hydrogen Sulde (H
S) Measurement
2
H2S sensors are electrochemical cells that
operate in the amperometric mode. That is,
they generate a current that is linearly proportional to the content of H2S in the sample gas.
6
1
4
5
1 Working electrode
2 Reference electrode
3 Counter electrode
Working electrode:
Counter electrode:
Overall cell reaction:
Fig. 3-15: H2S Sensor Schematic and
Reaction Formulas
4 Wetting lters
5 Electrolyte reservoir
6 Gas diffusion barrier
2
3
The working electrode (also called the sensing
electrode) is designed to optimize the oxidation
of Hydrogen Sulde. This electrode allows
the gas to come in contact with both electro
catalyst and electrolyte to create a threephase
interface of gas, liquid and solid.
The other two electrodes in the cell, the counter
electrode and the reference electrode usually
have a similar chemical composition to the
working electrode.
All three electrodes are stacked parallel to
each other, as illustrated in Fig. 3-15. Three
metal strips connect each electrode to the
three pins outside of the sensor body.
The cell electrolyte provides ionic electrical
contact between the electrodes, usually with
the aid of hydrophilic separators (labelled
“wetting lters” in Fig. 3-15) to allow capillary
S) Measurement
2
transport of the electrolyte which is usually
sulfuric acid between 3 and 7 molarity.
A potentiostatic circuit maintains the potential
of the working electrode at a xed value with
respect to the reference electrode potential.
The working electrode is the surface where
the electrochemical oxidation of H2S occurs. A
high surface area catalyst is used to optimize
the sensor performance, resulting in a high
sensor capacitance: typically 50 mF to 200 mF .
The counter electrode balances the reaction of
the working electrode – if the working electrode
oxidises the gas, then the counter electrode
must reduce some other molecule to generate
an equivalent current, in the opposite sense.
The reference electrode anchors the working
electrode potential to ensure that it is always
working in the correct region of the currentvoltage curve. It is important that the reference
electrode has a stable potential, keeping the
working electrode at the right electrochemical
potential to maintain a constant sensitivity,
good linearity and minimum sensitivity to
interfering gases.
The potentiostatic circuit ensures that the
counter electrode is provided with as much
current as it needs, also maintaining the wor-
king electrode at a xed potential, irrespective
of how hard it is working.
Measuring Principles
3
Emerson Process Management GmbH & Co. OHG 3-19
X-STREAM XE
Instruction Manual
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10/2012
3.5 Hydrogen Sulde (H
Moisture and oxygen are needed in the sample
gas for the electrochemical reactions to take
place. If concentrations of above components
are too low , the sensor's sensitivity decreases.
Therefore a purge cycle with ambient air can
be implemented by programming the internal
PLC.
If this option has not been ordered, the cu-
stomer is responsible to take care of regularly
purging the sensor. See the separate documentation provided together with every sensor
for information on how to properly setup such
a procedure.
S) Measurement
2
3.5.1 Cross Interferences by Accompanying Gases
% Interference related to full scale (f. s.)
Tab. 3-8:
Interfering
Gas
CO 400441
4000.210.25
H
2
SO
20201810
2
NO
10-25-30-30
2
NO 501023
Cl
10-12-25-25
2
C
4000.250.80.1
2H4
NH
200.10.10.1
3
Electrochemical H2S Measurement -
ppm
applied
Measurement range H
0 to 50 ppm0 to 200 ppm0 to 2000 ppm
Cross Interference by Accompanying Gases
S
2
Emerson Process Management GmbH & Co. OHG3-20
Instruction Manual
HASXEE-IM-HS
10/2012
X-STREAM XE
3.6 Measurement Specications
3.6 Measurement Specications
Sample gas components and measuring ranges (standard congurations)
In total, more than 60 gases are detectable, so the following table gives an overview only.
Consult with Emerson for gases / congurations not listed.
Not all data is applicable to all analyzer variations. The sample gas(es) and measuring ranges
for your specic analyzer are given by the order acknowledgement and on the analyzer's name
plate label.
Measurement range (sensor dependent)0 to 50 ppm0 to 200 ppm0 to 2000 ppm
Overgas limit200 ppm500 ppm10,000 ppm
Detection limit
Repeatability
1
Drift
1
1
Response time (t
)< 35 s
90
< 0.2 %
< 2 %
< 1 % per month
Operating life> 24 months
Sensor operating temperature-30 to 50 °C
Gas pressure range
800 to 1200 hPa
(-3.1 to 2.7 psig)
Gas humidity range (rel. humidity)15 to 90 %
Thermostat controlnone
1
Related to full scale
Note! These sensors require oxygen and moisture to work properly within given specications!
Take care of the separate documentation accompanying the sensors!
Tab. 3-13: H
Emerson Process Management GmbH & Co. OHG 3-23
S - Standard Measurement Performance Specications
2
X-STREAM XE
Instruction Manual
HASXEE-IM-HS
10/2012
3.6 Measurement Specications
Special Performance Specications for Gas Purity Measurements (ULCO & ULCO
0–10…< 50 ppm CO
Detection limit (4 σ)
Linearity
Zero-point drift
1 2
1 2 3
Span (sensitivity) drift
Repeatability
1 2
Response time (t
Permissible gas ow0.2–1.5 l/min.
Inuence of gas ow
Maximum gas pressure
Inuence of pressure
– At constant temperature≤ 0.1 % per hPa
– With pressure compensation
Permissible ambient temperature+15 to +35 °C (59 to 95 °F) +5 to +40 °C (41 to 104 °F)
Inuence of temperature
(at constant pressure)
– On zero point< 2 % per 10 K resp. < 0.2 ppm per 10 K
– On span (sensitivity)< 2 % per 10 K resp. < 0.2 ppm per 10 K
Thermostat controlnone 60 °C (140 °F)
1
Related to full scale
2
Constant pressure and temperature
3
Within 24 h; daily zero calibration requested
0–5…< 50 ppm CO
1 2
< 2 %
< 1 %
< 2 % resp. < 0.2 ppm
1 2 4
< 2 % resp. < 0.2 ppm
< 2 % resp. < 0.2 ppm 9
7
)
90
1 2
10 11
≤ 1500 hPa abs. (≤ 7 psig)
5
8
6
< 10 s
< 2%
≤ 0.01 % per hPa
Note! 1 psi = 68.95 hPa
4
Within 24 h; daily span calibration recommended
5
Related to measuring value
6
Temperature variation: ≤ 10 K per hour
7
From gas analyzer inlet at gas ow of 1.0 l/min
2
9
9
9
9
8
Barometric pressure sensor is required
9
Whichever value is higher
10
Limited to atmospheric if internal sample pump
11
Special conditions apply to model XEFD
)
2
Tab. 3-14: Special Performance Specications for Gas Purity Measurements (Low Ranges)
Emerson Process Management GmbH & Co. OHG3-24
Instruction Manual
HASXEE-IM-HS
10/2012
X-STREAM XE
3.6 Measurement Specications
Special Performance Specications for Gas Purity Measurements (Suppressed Ranges)
Detection limit (4 σ)
Linearity
1 2
Zero-point drift
Span (sensitivity) drift
Repeatability
Response time (t
Permissible gas owdened by constant pressure at inlet
Permissible gas pressure1300 hPa (4.4 psig) – 1700 hPa (10.1 psig)
Permissible gas pressure variation
Inuence of ambient pressure change
from 800 to 1100 hPa at constant temperature with pressure compensation
Permissible ambient temperature+15 to +35 °C (59 to 95 °F)
Inuence of temperature
(at constant pressure)
– On zero point≤ 0.5 % per 10 K
– On span (sensitivity)
Thermostat control60 °C (140 °F)
Warm-up timeapprox. 50 minutes
Purge gas (N
1
Related to suppressed range (98–100 %)
2
Constant pressure and temperature
3
Daily zero and span calibration requested
98–100 % CO
1 2
1 2 3
1 2 3
1 2
) 4 ≤ 30 s
90
1 5
1 6
7
) owapprox. 0.1–0.2 l/min
2
4
Switching from absolute to suppressed range
requires purge time of > 240 s
5
Sample gas pressure sensor mandatory
≤ 2 %
≤
1 %
≤ 2 % per day
≤ 2 % per day
≤
±
70 hPa (1 psig)
≤ 2 %
≤ 2 %
2
2 %
Note! 1 psi = 68.95 hPa
6
Temperature variation: ≤ 10 K per hour
7
Related to permissible ambient temp. range
Measuring Principles
3
Tab. 3-15: Special Performance Specications for Gas Purity Measurements (Suppressed Ranges)
Emerson Process Management GmbH & Co. OHG 3-25
Instruction Manual
X-STREAM XE
HASXEE-IM-HS
10/2012
3.6 Measurement Specications
Note 1!
Not all data listed are applicable to all analyzer versions (e.g. 60 °C thermostatically controlled
box is not available for electrochemical and trace oxygen, nor for
1
⁄219 in instruments).
Note 2!
For NDIR/UV/VIS measurements, take into account that
• sample gas may diffuse or be released by leakages into the analyzer enclosure
•
if existent in the analyzer surroundings, the component to be measured may enter the enclosure.
Concentrations then may increase inside the enclosure. High concentrations of the component
to be measured inside the enclosure may inuence the measurement by unintended absorption,
which could cause drift of the measurement.
A remedy for this issue is to purge the housing with gas not containing the component of interest.
All performance data are veried during the manufacturing process for each unit by the following
tests:
• Linearization and sensitivity test
• Long term drift stability test
• Climate chamber test
• Cross interference test (if applicable)
Emerson Process Management GmbH & Co. OHG3-26
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