YOKOGAWA IR400 series User manual

User’s
Manual Model IR400
Infrared Gas Analyzer
IM 11G02N01-01E
IM 11G02N01-01E
7th Edition

i
IM 11G02N01-01E
<Preface>
uPREFACE
We are grateful for your purchase of Yokogawa’s Infrared Gas Analyzer, Model: IR400. Read this
instruction manual carefully.
The related documents are as follows.
 GeneralSpecications:GS11G02N01-01E
User’s Manual: IM 11G02N01-01E (this manual)
IM 11G02P01-01E Communication Functions (MODBUS)
IM 11G00E01-01EN ZX8D Zirconia Oxygen Analyzer
IM 11G00E02-01EN K9350LE NO²/NO Converter
IM 11G00E02-02EN K9350LF NO²/NO Converter
The “E” or “EN” in the document number is the language code, meaning English
AnexclusiveUser’sManualmightbeattachedtotheproductswhosesu󰀩xcodesoroption
codescontainthecode“Z”(madetocustomers’specications).Pleasereaditalongwiththis
manual.
WARNING
This unit is not explosion-proof type. Do not use it in a place with explosive gases to prevent
explosion,reorotherseriousaccidents.
CAUTION
• For installation, observe the rule on it given in the instruction manual and select a place where
the weight of gas analyzer can be endured. Installation at an unsuited place may cause turnover
or fall and there is a risk of injury.
• During installation work, care should be taken to keep the unit free from cable chips or otherfor-
eignobjects.Otherwise,itmaycausere,troubleormalfunctionoftheunit.
WARNING
In piping, the following precautions should be observed. Wrong piping may cause gas leakage.
If the leaking gas contains a toxic component, there is a risk of serious accident being induced.
Also,ifcombustiblegasiscontained,thereisadangerofexplosion,reorthelikeoccurring.
• Connect pipes correctly referring to the instruction manual.
• Exhaust should be led outdoors so that it will not remain in the locker and installation room.Ex-
haust from the analyzer should be relieved in the atmospheric air in order that an unnecessary
pressure will not be applied to the analyzer. Otherwise, any pipe in the analyzer may be discon-
nected to cause gas leakage.
• For piping, use a pipe and a pressure reducing valve to which oil and grease are not adhering. If
suchamaterialisadhering,areorthelikeaccidentmaybecaused.
Media No.IM 11G02N01-01E 7th Edition :May 2018 (YK)
All Rights Reserved Copyright © 2002, Yokogawa Electric Corporation

ii
IM 11G02N01-01E
<Preface>
CAUTION
• Wiring work must be performed with the main power set to OFF to prevent electric shocks.
•Enforceconstructionofclass-Dgroundingwirebyallmeans.Ifthespeciedgroundingcon-
struction is neglected, a shock hazard or fault may be caused.
• Wires should be the proper one meeting the ratings of this instrument. If using a wire which can-
notenduretheratings,aremayoccur.
• Be sure to use a power supply of correct rating. Connection of power supply of incorrect rating
maycausere.
WARNING
•Donotsmokenoruseaamenearthegasanalyzer.Otherwise,aremaybecaused.
•Donotallowwatertogointothegasanalyzer.Otherwise,hazardshockorreintheinstrument
may be caused.
WARNING
PurgenotonlyinsideofIR400butallmeasuringgaslineswithzerogassu󰀩ciently,whenyou
provide maintenance or inspection on IR400 with its cover or door open. Otherwise it may cause
hazardousaccidentssuchasgasleakage,reandexplosion.
CAUTION
Do not operate the analyzer for a long time with its cover or door left open. Otherwise, dust, for-
eign matter, etc. may stick on internal walls, thereby causing faults.
CAUTION
• Be sure to observe the following for safe operation avoiding the shock hazard and injury.
• Replacement parts such as a maintenance part should be disposed of as incombustibles. For
details, follow the local ordinance.
lInspection of product
On receipt of the product, inspect the package and note it has no damage caused by the delivery.
Conrmthespecicationoftheproductcomformswithyourorderandaccessoriesarealldeliv-
ered. Check the product code labeld on a model plate is correct.

iii
IM 11G02N01-01E
<Preface>
uSafety Precautions
n Safety,Protection,andModicationoftheProduct
• This manual is intended for the following personnel :
• Engineers responsible for installation, wiring, and maintenance of the equipment
• Personnel responsible for normal daily operation of the equipment.
• In order to protect the system controlled by the product and the product itself and ensure safe
operation, observe the safety precautions described in this user’s manual. We assume no liabil-
ity for safety if users fail to observe these instructions when operating the product.
• Ifthisinstrumentisusedinamannernotspeciedinthisuser’smanual,theprotectionprovided
by this instrument may be impaired.
• If any protection or safety circuit is required for the system controlled by the product or for the
product itself, prepare it separately.
• Be sure to use the spare parts approved by Yokogawa Electric Corporation (hereafter simply
referred to as YOKOGAWA) when replacing parts or consumables.
• Modicationoftheproductisstrictlyprohibited.
• The following safety symbols are used on the product as well as in this manual.
WARNING
This symbol indicates that an operator must follow the instructions laid out in this manual
in order to avoid the risks for the human body and health including risk of injury, electric
shock, or fatalities. or the damages to instruments. The manual describes what special
care the operator must take to avoid such risks.
CAUTION
This symbol indicates that the operator must refer to the instructions in this manual in
order to prevent the instrument (hardware) or software from being damaged, or a system
failure from occurring.
The following are signal words to be found only in our instruction manuals.
CAUTION
This symbol gives information essential for understanding the operations and functions.
NOTE
This symbol indicates information that complements the present topic.
nNotes on Handling User’s Manuals
• Please hand over the user’s manuals to your end users so that they can keep the user’s manu-
als on hand for convenient reference.
• Please read the information thoroughly before using the product.
• The purpose of these user’s manuals is not to warrant that the product is well suited to any par-
ticular purpose but rather to describe the functional details of the product.
• No part of the user’s manuals may be transferred or reproduced without prior written consent
from YOKOGAWA.
• YOKOGAWA reserves the right to make improvements in the user’s manuals and product at any
time, without notice or obligation.
• Ifyouhaveanyquestions,oryoundmistakesoromissionsintheuser’smanuals,pleasecon-
tact our sales representative or your local distributor.
• This manual is an essential part of the product ; keep it in a safe place for future reference.

iv
IM 11G02N01-01E
<Preface>
nDrawing Conventions
Somedrawingsmaybepartiallyemphasized,simplied,oromitted,fortheconvenienceofde-
scription.
Somescreenimagesdepictedintheuser’smanualmayhavedi󰀨erentdisplaypositionsor
character types (e.g., the upper / lower case). Also note that some of the images contained in this
user’s manual are display examples.
n AuthorizedRepresentativeinEEA
The Authorized Representative for this product in EEA is Yokogawa Europe B.V. (Euroweg 2,
3825 HD Amersfoort, The Netherlands).
nTrademark Acknowledgments
• All other company and product names mentioned in this user’s manual are trademarks or
registered trademarks of their respective companies.
• We do not use TM or ® mark to indicate those trademarks or registered trademarks in this user’s
manual
Notes on Use in Korea
The AC cord with the following products is not compliant with the safety standards in Korea.
Please do not use it to connect household appliances in Korea.
It is prohibited to use an adapter connector to change the plug shape for the AC cord of the
following products.
• IR400--J/
• IR400--E/

v
IM 11G02N01-01E
<Preface>
uCE marking products
n AuthorizedRepresentativeinEEA
The Authorized Representative for this product in EEA is Yokogawa Europe B.V. (Euroweg 2,
3825 HD Amersfoort, The Netherlands).
n IdenticationTag
Thismanualandtheidenticationtagattachedonpackingboxareessentialpartsoftheproduct.
Keep them together in a safe place for future reference.
nUsers
This product is designed to be used by a person with specialized knowledge.
n Howtodisposethebatteries
This is an explanation about the new EU Battery Directive. This directive is only valid in the EU.
Batteries are included in this product. Batteries incorporated into this product cannot be removed
by yourself. Dispose them together with this product.
WhenyoudisposethisproductintheEU,contactyourlocalYokogawaEuropeB.V.o󰀩ce.
Do not dispose them as domestic household waste.
Battery type: Manganese dioxide lithium battery
Notice:
The symbol (see above) means they shall be sorted out and collected as ordained inANNEX II in DIRECTIVE 2006/66
n InformationoftheWEEEDirective
Thisproductispurposelydesignedtobeusedinalargescalexedinstallationsonlyand,
therefore, is out of scope of the WEEE Directive. The WEEE Directive does not apply. This
product should be disposed in accordance with local and national legislation/regulations.
The WEEE Directive is only valid in the EU.

vi
IM 11G02N01-01E
<Preface>
uAfter-Sales Warranty
Donotmodifytheproduct.
Yokogawawarrantstheproductfortheperiodstatedinthepre-purchasequo-
tation.Yokogawashallconductdenedwarrantyservicebasedonitsstand-
ard.Whenthecustomersiteislocatedoutsideoftheservicearea,afeefor
dispatchingthemaintenanceengineerwillbechangedtothecustomer.
Duringthewarrantyperiod,forrepairunderwarrantycarryorsendtheprod-
ucttothelocalsalesrepresentativeorserviceo󰀩ce.Yokogawawillreplaceor
repairanydamagedpartsandreturntheproducttoyou.
Before returning a product for repair under warranty, provide us with the model name and serial
number and a description of the problem. Any diagrams or data explaining the problem would
also be appreciated.
If we replace the product with a new one, we won’t provide you with a repair report.
Inthefollowingcases,customerwillbechargedrepairfeeregardlessofwar-
rantyperiod.
Failure of components which are out of scope of warranty stated in instruction manual.
Failure caused by usage of software, hardware or auxiliary equipment, which Yokogawa did not
supply.
Failureduetoimproperorinsu󰀩cientmaintenancebyuser.
Failureduetomisoperation,misuseormodicationwhichYokogawadoesnotauthorize.
Failureduetopowersupply(voltage,frequency)beingoutsidespecicationsorabnormal.
Failure caused by any usage out of scope of recommended usage
Anydamagefromre,earthquake,astormandood,lightning,disturbance,riot,warfare,
radiation and other natural changes.
Yokogawadoesnotwarrantconformancewiththespecicapplicationatthe
usersite.
Yokogawawillnotbeardirect/indirectresponsibilityfordamageduetoaspe-
cicapplication.
Yokogawawillnotbearresponsibilitywhentheusercongurestheproduct
intosystemsorresellstheproduct.
Maintenanceserviceandsupplyingrepairpartswillbecoveredforveyears
aftertheproductionends.Forrepairthisproduct,pleasecontactthenearest
saleso󰀩cedescribedinthisinstructionmanual.

Toc-1
IM 11G02N01-01E
<CONTENTS>
Model IR400
Infrared Gas Analyzer
CONTENTS
IM11G02N01-01E7thEdition
uPREFACE........................................................................................................i
uSafety Precautions......................................................................................iii
uCE marking products ..................................................................................v
uAfter-Sales Warranty...................................................................................vi
1. OVERVIEW................................................................................................ 1-1
1.1 Nameanddescriptionofmainunit................................................................. 1-2
1.2 Input/Outputterminalmodule......................................................................... 1-3
2. SPECIFICATIONS..................................................................................... 2-1
2.1 StandardSpecications................................................................................... 2-1
2.2 ModelandSu󰀩xcodes.................................................................................... 2-6
2.3 ExternalDimensions...................................................................................... 2-13
3. INSTALLATION......................................................................................... 3-1
3.1 Installationconditions...................................................................................... 3-1
3.2 Installation......................................................................................................... 3-2
3.2.1 Installation of analyzer main frame .................................................... 3-2
3.2.2 Mounting input/output terminal module ............................................. 3-3
3.3 Piping................................................................................................................. 3-4
3.4 Sampling............................................................................................................ 3-7
3.4.1 Conditions of sampling gas................................................................ 3-7
3.4.2 Samplinggasow.............................................................................. 3-7
3.4.3 Preparation of standard gas .............................................................. 3-7
3.4.4 Reduction of moisture interference.................................................... 3-7
3.4.5 Purging of instrument inside .............................................................. 3-8
3.4.6 Pressure at sampling gas outlet ........................................................ 3-8
3.4.7 Examplecongurationofgassamplingsystem ................................ 3-9
3.5 Wiring............................................................................................................... 3-10
3.5.1 Power inlet ....................................................................................... 3-10
3.5.2 Input/Output terminal module .......................................................... 3-10
4. OPERATION.............................................................................................. 4-1
4.1 Warm-upoperationandregularoperation..................................................... 4-1
4.2 Nameanddescriptionofoperationpanel...................................................... 4-2
4.3 Overviewofdisplayandoperationpanels..................................................... 4-3
4.4 Outlineofdisplayscreen................................................................................. 4-4

Toc-2
IM 11G02N01-01E
<CONTENTS>
4.5 Generaloperation............................................................................................. 4-7
5. SETTINGANDCALIBRATION................................................................. 5-1
5.1 Switchofrange................................................................................................. 5-1
5.1.1 Setting of range switch mode............................................................. 5-1
5.1.2 Manual range switch .......................................................................... 5-2
5.2 Calibrationsetting............................................................................................ 5-3
5.2.1 Setting of calibration concentration.................................................... 5-3
5.2.2 Setting of manual zero calibration ..................................................... 5-5
5.2.3 Setting of calibration range ................................................................ 5-7
5.2.4 Setting of auto calibration component/range..................................... 5-9
5.3 Alarmsetting................................................................................................... 5-11
5.3.1 Setting of alarm values .................................................................... 5-11
5.3.2 Hysteresis setting............................................................................. 5-13
5.4 Settingofautocalibration.............................................................................. 5-14
5.4.1 Auto calibration ................................................................................ 5-14
5.4.2 Forced run/stop of auto calibration .................................................. 5-17
5.5 Settingofautozerocalibration..................................................................... 5-20
5.5.1 Auto zero calibration ........................................................................ 5-20
5.5.2 Forced run/stop of auto zero calibration .......................................... 5-22
5.6 Peakalarmsetting.......................................................................................... 5-25
5.7 Parametersetting............................................................................................ 5-27
5.8 Maintenancemode......................................................................................... 5-34
5.9 Calibration....................................................................................................... 5-40
5.9.1 Zero calibration ............................................................................... 5-40
5.9.2 Span calibration ............................................................................... 5-41
6. MAINTENANCE......................................................................................... 6-1
6.1 Dailycheck........................................................................................................ 6-1
6.2 Dailycheckandmaintenanceprocedures..................................................... 6-2
6.3 Maintenanceofanalyzerunit........................................................................... 6-2
6.3.1 Cleaning method for sample cell (pipe cell)....................................... 6-2
6.3.2 Cleaning method for sample cell (block cell) ..................................... 6-4
6.3.3 Optical zero adjustment method (optical balance adjustment) ......... 6-6
6.3.4 Moisture interference compensation adjustment method ................. 6-7
6.3.5 Replacement of fuse on analyzer unit ............................................... 6-8
6.4 Inspectionandmaintenanceoflimitedservice-lifecomponents............... 6-9
7. TROUBLESHOOTING............................................................................. 7-1
7.1 Errormessage................................................................................................... 7-1
7.2 Troubleshooting................................................................................................ 7-3
Revision Information...............................................................................................i

<1. OVERVIEW> 1-1
IM 11G02N01-01E
1. OVERVIEW
This infrared gas analyzer (type: IR400) measures the concentration of NO, SO2, CO2, CO and
CH4containedinsamplinggasontheprinciplethatdi󰀨erentatomicmoleculeshaveanabsorption
spectrum in the wave band of infrared rays, and the intensity of absorption is determined by the
Lambert-Beer law.
Since this instrument incorporates a compact paramagnetic O2sensor, it allows measuring up to
5 components simultaneously by using the built-in O2sensor (up to 4 components if O2sensor is
excluded).
Furthermore, use of a microprocessor or large sized liquid crystal display realizes improvement of
operability, accuracy and multi-functions.
This instrument is optimum for measuring combustible gas exhausted from boilers or incinerators, and
itise󰀨ectiveforsteelgasanalysis(blastfurnace,steelconverter,thermaltreatmentfurnace,sintering
(Pellet equipment), coke furnace), storage and maturity of vegetable and fruit, biochemistry (microbe),
[fermentation], air pollution [incinerator, exhaust gas desulfurization, denitration], automotive emission
(excluding tester), protection against disasters [detection of explosive gas and toxic gas, combustion
gasanalysisofnewbuildingmaterial],growthofplants,chemicalanalysis[petroleumreneryplant,
petroleum chemistry plant, gas generation plant], environment [landing concentration, tunnel
concentration, parking lot, building management] and various physical and chemical experiments.

<1. OVERVIEW>
1-2
IM 11G02N01-01E
1.1 Nameanddescriptionofmainunit
(1) Handle
(2) Power switch
(5) Sampling gas out
(4) Sampling gas inlet
(12) Purge gas inlet
(4) Sampling gas inlet
(3) Display/
operation panel
(6) Sector motor
(7) Light source cover
(5) Sampling gas outlet
< Front panel >
< Back panel >
(9) Power inlet
(8) Input/Output terminal connector
For measuring
unit 1
For measuring
unit 2
(10) Protective cover
(11) Fuse holder
Fig.1-1
Name Description Name Description
(1) Handle
(2) Power switch
(3) Display/operation
panel
(4)
Sampling gas inlet
(5) Sampling gas
outlet
Used for withdrawing the main
unit from the panel.
Used for ON/OFF the analyzer.
Liquid crystal display and keys
for setting various functions.
For connecting to the measuring
gas tube.
Connect to the exhaust line. (A
pair of sampling gas inlet/outlet
is provided for each measuring
unit.
When ordered with purge, the
piping to measuring unit 2 is built
inside. In this case, the sample
gas outlet for measuring unit 2 is
used for purge gas inlet.)
(6) Sector motor
(7) Light source
cover
(8) Input/Output
terminal connector
(9) Power inlet
(10) Protective cover
(11) Fuse holder
(12) Purge gas inlet
For driving the rotation of
sector.
Infrared light source is
arranged in the cover.
For connecting to the external
input/output terminal module.
For connecting the power
cable.
Protective cover for the light
source and the motor. May be
removed during operation.
Glass fuse for AC power inlet
is built in. Fuse is wired only
at LIVE side of single-phase
two-wire type of AC power.

<1. OVERVIEW> 1-3
IM 11G02N01-01E
1.2 Input/Outputterminalmodule
IR400 provides input/output of various signals from the supplied input/output terminal modules by
connecting the instrument to the module.
TN1 TN2 TN3 TN4 TN5
Input/Output terminal module
(1) Mounting hole (Ø4.5, 6 places)
(2) Input/Output terminal block (TN1 to TN5)
(6) Communication connector (CN2)
(3) Cable connection connector (CN1)
(5) Calibration solenoid valve drive signal
output connector (CN3)
(4) Analyzer main unit Input/Output terminal module connection cable (1 m)
Fig h(2-2).ai
Fig.1-2
Name Description Name Description
Mounting hole Used for mounting input/
output terminal module.
Ø4.5, 6 places
Connector (CN2) Connect communication cable.
*Refer to another manual
(IM 11G02P01-01E) about
communication function.
Input/Output
terminal block
(TN 1 to TN 5)
Input/Output terminal for
signals of analog output,
rangeidenticationcontact,
alarm contact output, etc.
Connector (CN3) Cable connector for connecting
the analyzer to the relay board
for automatic calibration
Input/Output
terminal module
connector
(CN1)
Used for connecting the
analyzer main unit and the
input/output terminal module
Cable for
connecting Input/
Output Terminal
Used for connecting the
analyzer main unit to the input/
output terminal module.

Blank Page

<2.SPECIFICATIONS> 2-1
IM 11G02N01-01E
2. SPECIFICATIONS
Refer to GS 11G02N01-01E for updated information.
2.1 StandardSpecications
Measurement principle:
NO, SO2, CO2, CO, CH4: Non-dispersive infrared method
Single light source-double beams
O2: Paramagnetic type (built-in), or zirconia type (external)
Measurable gas components and measuring ranges:
Range
Component Minimum range Maximumrange
NO 0 – 50 ppm 0 – 5000 ppm
SO20 – 50 ppm 0 – 10 vol%
CO20 – 20 ppm 0 – 100 vol%
CO 0 – 50 ppm 0 – 100 vol%
CH40 – 200 ppm 0 – 100 vol%
O2(paramagnetic) 0 – 5 vol% 0 – 25 vol%
O2(zirconia) 0 – 5 vol% 0 – 25 vol%
• Measurement of up to 5 components including O2.
• 1 or 2 measuring range per component.
•Measuringrangeratio ≤1:5(O2 analyzer)
≤1:25(exceptO2analyzer)
For measurable components and possible combinations of measuring ranges, refer to Measurable
Components and Ranges page10 through 11.
Display: Digital indication in 4 digits (LCD with backlight)
• Instantaneous value of each component
• Instantaneous value after O2correction
(only in NO, SO2, CO with O2measurement)
• Average value after O2correction
(only in NO, SO2, CO with O2measurement)
• Average O2value
Analog output signal:
4 to 20 mA DC or 0 to 1 V DC,
non-isolated, 12 points max.
Analog output corresponds one-to-one with measured value indication.
*
Input/Output of analog signals is available in combination with the input/output terminal module.
Permissible load resistance:
550Ωmax.for4to20mADC
100kΩmin.for0to1VDC
*: Refer to the table “Measurable Components and the Corresponding Channel Numbers” of Page
17, for the channel numbers of displayed values and analog output signals.
Analog Input Signal :
For signal input from external O2analyzer,
Signal requirement;
(1) Signal from Yokogawa’s zirconia O2analyzer (Model ZX8D*C or ZX8D*D)
(2) 0 to 1V DC from an O2 sensor Input section is not isolated. This feature is
e󰀨ectivewhenbuilt-inO2sensor is not used.
(An input signal triggers measured concentration indication and O2 correction.)
* : External O2 analyzer should be purchased separately.
Relay contact output:
1a contact (250 V AC/2 A, resistive load)
 Instrumenterror,calibrationerror,rangeidentication,autocalibrationstatus,pumpON/OFF,
peak alarm.

<2. SPECIFICATIONS>
2-2
IM 11G02N01-01E
1c contact (250 V AC/2 A, resistive load)
Selectable 6 outputs.
High/Low limit alarm contact output (for each channel).
Power disconnection alarm.
* All relay contacts are isolated mutually and from the internal circuit.
Contact input:
Non-voltagecontact(ON/0V,OFF/5VDC,5mAowingatON).Remote range changeover,
auto calibration remote start, remote hold, average value reset, pump ON/OFF. Isolated from
the internal circuit with photocoupler. Contact inputs are not isolated from one another.
Transmission output:
Solenoid valve drive signal for automatic calibration.Transistor output (100 mA or less)
* For details, see External Connection Diagram on page 16.
Power supply:
Voltage rating; 100 to 240 V AC
Allowable range; 85 to 264 V AC
Frequency; 50/60 Hz
Power consumption; 250 VA max.
Inlet; Conform to EN60320
Protection Class 1
Operating conditions:
Ambient temperature; -5 to 45°C
Ambient humidity;
90%RH max., non-condensing.
Storage conditions:
Ambient temperature; -20 to 60°C
Ambient humidity; 90%RH max,non-condensing
Dimensions (H × W × D):
Analyzer main unit;
177 × 483 × 599 mm
Input/Output terminal module;
164 ×316 ×55 mm
Weight: Approx. 22 kg (only analyzer)
Finish color:
Frontpanel;O󰀨-white(Munsell10Y7.5/0.5orequivalent)
Casing; Plating, Steel-blue (gray)
Enclosure: Steel casing, for indoor use
Material of gas-contacting parts:
Gas inlet/outlet; SUS304
Sample cell; SUS304/neoprene rubber
Infrared-ray transmitting window; CaF2
O2 analyzer sampling cell; SUS316
Internalpiping;Toarontube,Teontube
Gas inlet/outlet: Rc1/4 or 1/4 NPT internal thread
Purgegasowrate: 1L/min(whenrequired)
Safety, EMC and RoHS conformity standards:
 WhenusingIR400inEurope,selectasu󰀩xcodeof“Indication,Powercable”:Cinthesu󰀩xcode.
Installation altitude; 2000 m or less
Pollution degree; 2 (Note)
Installation category;II (Note)
 Note: Installationcategory,calledovervoltagecategory,speciesimpulsewithstandingvoltage.CategoryIIisforelectrical
equipment.
Pollution degree indicates the degree of existence of solid, liquid, gas or other inclusions which reduce dielectric
strength. Degree 2 is the normal indoor environment.
Safety; EN61010-1
EMC; EN61326-1 Class A, Table 2,EN61326-2-3,
EN61000-3-2, EN61000-3-3, EN61000-6-2
EMC Regulatory Arrangement in Australia and New Zealand (RCM) EN61326-1 Class A
Note: The product mounted in a steel enclosure conforms to the requirements of EMC directive.
Caution: TheinstrumentisaClassAproduct,anditisdesignedforuseintheindustrialenvironment.Pleaseuse
thisinstrumentintheindustrialenvironmentonly.
RoHS; EN50581

<2.SPECIFICATIONS> 2-3
IM 11G02N01-01E
Information of the WEEE Directive
 Thisproductispurposelydesignedtobeusedinalargescalexedinstallationsonlyand,
therefore, is out of scope of the WEEE Directive. The WEEE Directive does not apply.
The WEEE Directive is only valid in the EU.
Options
Dedicatedrelayboard(Optioncode:/R)
This relay board receives signals from connector CN3 of the IR400 I/O terminal module and activates
the calibration solenoid valve directly.
Relay Contact 1a contact (250 V AC/2 A, resistive load)
Contact Action
During measurement; CN1: ON
Others: OFF
During calibration: CN1: OFF
Others: Contact corresponding to calibration timing is ON
Recommended connector (CN1 to CN9)
Housing;
VHR-2N (JST, Japan Solderless Terminals,)
Contact; SVH-21T-1-1 (JST)
Standard Functions
Output signal hold:
Output signals are kept on hold during the manual or auto calibrations by activation of holding
(turning “ON” its setting).
The values to be on hold are the ones obtained just before calibration mode starts.
Indication values will not be on hold.
Remote output hold:
Output signal holds the latest value or setting value by short-circuiting the remote-output-hold
input terminals.
Holding is maintained while the terminals are short-circuited. But the indicated instantaneous
values will not be on hold.
Switch range :
The range changeover is available in manual, auto, and remote modes. Only preset
changeover method is valid.
Manual; Allows range to switch by key operation.
Auto; Allows range to switch from low to high range when 90%FS or more is available in the low
range.
Allows range to switch from high to low range when 80%FS or less is available in the low
range.
Remote;
Non-voltage contact input (for measurable components)
Allows range to switch via an external signal when remote range changeover input is
received.
Rangeidenticationsignal:
Thepresentmeasuringrangeisidentiedbyacontactsignal.
 Thecontactoutputterminalsforeachcomponentareshort-circuitedwhentherstrangeis
selected, and when the second range is selected, the terminals are open.
Auto calibration:
Auto calibration is carried out periodically at a preset cycle.
When a standard gas cylinder for calibration and a solenoid valve for opening/closing the
gasowlinearepreparedexternallybythecustomer,calibrationwillbecarriedoutwiththe
solenoidvalvedrivecontactsforzerocalibrationandeachspancalibrationturnedon/o󰀨
sequentially at the set auto calibration timing.
Auto calibration cycle setting;
Auto calibration cycle is set.
Setting is variable within 1 to 99 hours (in increments of 1 hour) or 1 to 40 days (in
increments of 1 day).
Gasowtimesetting;
Thetimeforowingeachcalibrationgasinautocalibrationisset.
Settable within 60 to 900 seconds (in increments of 1 second)
Auto calibration remote start:
Auto calibration is carried out only once according to an external input signal. Calibration
sequence is settable in the same way as the general auto calibration.

<2. SPECIFICATIONS>
2-4
IM 11G02N01-01E
Auto calibration starts by opening the auto-calibration-remote-start input terminals after short-
circuiting them for 1.5 seconds or longer.
Auto zero calibration:
Auto zero calibration is carried out periodically at the preset cycle.
This cycle is independent of “Auto calibration” cycle.
Whenzerocalibrationgasandsolenoidvalveforopening/closingthecalibrationgasowlineare
prepared externally by the customer, the zero calibration will be carried out at the preset auto zero
calibrationtimingwiththesolenoidvalvedrivecontact(forzerocalibration)turnedon/o󰀨
.
Auto zero calibration cycle setting;
Auto zero calibration cycle is set.
Setting is variable within 1 to 99 hours (in increments of 1 hour) or 1 to 40 days (in
increments of 1 day)
Gasowtimesetting;
Thetimeforowingzerogasinautozerocalibrationisset.
Settable 60 to 900 seconds (in increments of 1 second)
Upper/lower limit alarm:
Alarm contact output turns on when measurement value reaches the preset upper or lower
limit of alarm value.
Contacts close when the instantaneous value of each component becomes larger than the
upper alarm limit value or smaller than the lower alarm limit value.
Instrument error contact output:
Contacts close at an occurrence of analyzer error No. 1, 3 or 10.
Calibration error contact output:
Contacts close at occurrence of manual or auto calibration error (any of errors No. 4 to 9).
Auto calibration status contact output:
Contacts close during auto calibration.
Pump ON/OFF contact output:
Duringmeasurement,contactsclose.Whilecalibrationgasisowing,contactsopen.
Contacts are connected in power supply of pump, and stop the sample gas while calibration
gasisowing.
OptionalFunctions(availablewithspecifyingoptionalcode)
O2correction:(-/K)
Conversion of measured NO, SO2and CO gas concentrations into values at reference O2
concentration.
Correction formula: C = 21 – On
21 – Osx Cs
Where:
C: Sample gas concentration after O2correction
Cs:
Measured concentration of sample gas
Os:Measured O2concentration (limit setting: 1 to 20%O2, default 17% )
On:Reference O2concentration (value changeable by setting: 0 to 19%O2, default 4%)
The result of calculation is indicated and output in an analog output signal.
Average value after O2correction and O2average value calculation (-/K):
The result of O2correction or instantaneous O2value can be outputted as an average value in
the determined period of time.
Used for averaging is the moving average method in which sampling is carried out at intervals
of 30 seconds.
(Output is updated every 30 seconds. It is the average value in the determined period of time
just before the latest updating.)
Averaging time is settable within 1 to 59 minutes (in increments of 1 minute) or 1 to 4 hours (in
increments of 1 hour).
Average value reset (-/K):
The above-mentioned output of average value starts from the initial state by opening the
average-value-resetting input terminals after short-circuiting them for 1.5 seconds or longer.
Output is reset by short-circuiting and restarted by opening.
CO concentration peak count alarm (-/A):
(available only for CO + O2measurement)
Alarm output turns on according to the preset concentration and count.
Whenever the instantaneous value of CO exceeds the preset concentration value, count

<2.SPECIFICATIONS> 2-5
IM 11G02N01-01E
increments. If the count exceeds the preset value in one hour, the alarm contacts close.
Communication function (-/C):
RS-232C (9 pins D-sub)
Half-duplex bit serial
Start-stop synchronization
ModbusTM protocol
Contents; Read/write parameters
Read measurement concentration and instrument status
Remark; Wh
en connecting via RS-485 interface, a RS-232C ←→ RS-485 converter should be used.
Performance
Repeatability: ±0.5% of full scale (±1% of full scale for range less than 0-50 ppm)
Linearity: ±1% of full scale
Zero drift: ±1% of full scale/week
(±2% of full scale/week for range equal
to or more than 50 ppm and less than 200ppm)
(±2% of full scale/day for range less
than 0-50 ppm)
Span drift: ±2% of full scale/week
(±2% of full scale/day for range less than 0-50 ppm)
Response time (for 90%FS response) :
Within60secondsincludingreplacementtimeofsamplegas(whengasowrateis0.5
L/min). Gas replacement time depends on the number of measuring components, and
measuringrangee󰀨ectsofinterferinggases.
E󰀨ectsofinterferinggases:
Whensamplegascontainsgascomponentslistedbelow,themeasurementaccuracymaysu󰀨er.
ConsultYokogawaforthecountermeasuresorthee󰀨ectonaccuracy.
Analyzer Interference gas E󰀨ect
SO2analyzer NO250 ppm of NO2is equivalent to -6 ppm of SO2
CO analyzer CO210 % of CO2is equivalent to 3 ppm of CO
N2O1000 ppm of N2O is equivalent to 80 ppm of CO
CH4analyzer CO215% of CO2is equivalent to 3 ppm of CH4
StandardRequirementsforSampleGas
Flow rate: 0.5±0.2 L/min
Temperature: 0 to 50°C
Pressure: 10 kPa or less (Gas outlet side should be open to the atmospheric air.)
Dust: 100 µg/Nm3or less in particle size of 1 µm or less
Mist: Unallowable
Moisture: Below a level where saturation occurs at 2°C (condensation unallowable).
Corrosive component: HCl 1 ppm or less
Standardgasforcalibration:
Zero gas: Dry N2
Span gas: Each sample gas having concentration 90 to 100% of its measuring range (recommended).
Gas beyond concentration 100%FS is unusable.
In case a zirconia O2analyzer is installed externally and calibration is carried out on the same
calibration gas line:
Zero gas; Dry air or atmospheric air (provided without CO2sensor)
Span gas;For other than O2 measurement, each sample gas having concentration 90 to
100% of its measuring range.
For O2measurement, O2 gas of 1 to 2 vol%.
InstallationRequirements
•Indoor use: Avoid exposure to direct sunlight, weather, and radiant heat from hot substances. Where
the exposure to such conditions are unavoidable, a protective hood or cover should be
prepared.
•Minimal vibration
•A clean atmosphere

<2. SPECIFICATIONS>
2-6
IM 11G02N01-01E
2.2 ModelandSu󰀩xcodes
[Style: S4]
Model Su󰀩xcode Option
code Description
IR400 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - I nfrared gas analyzer 19-inch rack mounting type
with slide rail
Measurable
component
(Note 9)
-A
-B
-C
-D
-F
-G
-H
-J
-K
-L
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
1st: NO
1st: SO2
1st: CO2
1st: CO
1st: CH4
1st: NO, 2nd: SO2
1st: NO, 2nd: CO
1st: CO2, 2nd: CO
1st: NO, 2nd: SO2, 3rd: CO
1st: NO, 2nd: SO2, 3rd: CO2, 4th: CO
O2Analyzer N
1
2
3
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
Without O2Analyzer
External zircona oxygen analyzer
(purchase separately: ZX8D) (Note 8)
External O2Analyzer (Note 1)
Built-in paramagnetic type O2 sensor
1st Component
1st Range
(Note 2)
V
A
B
C
D
W
E
F
G
H
J
K
L
M
P
Q
R
S
T
U
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
0-20 ppm (Note 3)
0-50 ppm
0-100 ppm
0-200 ppm
0-250 ppm
0-300 ppm
0-500 ppm
0-1000 ppm
0-2000 ppm
0-5000 ppm
0-1%
0-2%
0-3%
0-5%
0-10%
0-20%
0-40%
0-50%
0-70%
0-100%
1st Component
2nd Range
(Note 2)
A
B
C
D
W
E
F
G
H
J
K
L
M
P
Q
R
S
T
U
N
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - --
- - - - - - --
- - - - - - -
0-50 ppm
0-100 ppm
0-200 ppm
0-250 ppm
0-300 ppm
0-500 ppm
0-1000 ppm
0-2000 ppm
0-5000 ppm
0-1%
0-2%
0-3%
0-5%
0-10%
0-20%
0-40%
0-50%
0-70%
0-100%
Not available

<2.SPECIFICATIONS> 2-7
IM 11G02N01-01E
[Style: S4]
Model Su󰀩xcode Option
code Description
2nd Component
1st Range
(Note 2)
A
B
C
D
W
E
F
G
H
J
K
L
M
P
Q
R
S
T
U
N
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
0-50 ppm
0-100 ppm
0-200 ppm
0-250 ppm
0-300 ppm
0-500 ppm
0-1000 ppm
0-2000 ppm
0-5000 ppm
0-1%
0-2%
0-3%
0-5%
0-10%
0-20%
0-40%
0-50%
0-70%
0-100%
Not available
2nd Component
2nd Range
(Note 2)
B
C
D
W
E
F
G
H
J
K
L
M
P
Q
R
S
T
U
N
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
0-100 ppm
0-200 ppm
0-250 ppm
0-300 ppm
0-500 ppm
0-1000 ppm
0-2000 ppm
0-5000 ppm
0-1%
0-2%
0-3%
0-5%
0-10%
0-20%
0-40%
0-50%
0-70%
0-100%
Not Available
3rd Component
1st Range
(Note 2)
A
B
C
D
W
E
F
G
H
J
K
L
M
P
Q
R
S
T
U
N
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - --
0-50 ppm
0-100 ppm
0-200 ppm
0-250 ppm
0-300 ppm
0-500 ppm
0-1000 ppm
0-2000 ppm
0-5000 ppm
0-1%
0-2%
0-3%
0-5%
0-10%
0-20%
0-40%
0-50%
0-70%
0-100%
Not Available
3rd Component
2nd Range
(Note 2)
B
C
D
W
E
F
G
H
J
K
L
M
P
Q
R
S
T
U
N
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
- - - - - - -
0-100 ppm
0-200 ppm
0-250 ppm
0-300 ppm
0-500 ppm
0-1000 ppm
0-2000 ppm
0-5000 ppm
0-1%
0-2%
0-3%
0-5%
0-10%
0-20%
0-40%
0-50%
0-70%
0-100%
Not Available