YOKOGAWA EXA DO402G User manual

User’s
Manual Model DO402G
Dissolved Oxygen Converter
[Style: S3]
IM 12J05D02-01E
IM 12J05D02-01E
9th Edition

i
IM 12J05D02-01E
uIntroduction
NOTE
Electric discharge
The EXA analyzer contains devices that can be damaged by electrostatic discharge. When
servicing this equipment, please observe proper procedures to prevent such damage.
Replacement components should be shipped in conductive packaging. Repair work should
be done at grounded workstations using grounded soldering irons and wrist straps to avoid
electrostatic discharge.
Installation and wiring
The EXA analyzer should only be used with equipment that meets the relevant IEC, American or
Canadian standards. Yokogawa accepts no responsibility for the misuse of this unit.
The Instrument is packed carefully with shock absorbing materials, nevertheless, the instrument
may be damaged or broken if subjected to strong shock, such as if the instrument is dropped.
Handle with care.
Although the instrument has a weatherproof construction, the transmitter can be harmed if it
becomes submerged in water or becomes excessively wet.
Do not use an abrasive or solvent in cleaning the instrument.
Yokogawa is not responsible for damage to the instrument, poor performance of the instrument
or losses resulting from such, if the problems are caused by:
• Improperoperationbytheuser.
• Useoftheinstrumentinimproperapplications
• Useoftheinstrumentinanimproperenvironmentorimproperutilityprogram
• RepairormodicationoftherelatedinstrumentbyanengineernotauthorizedbyYokogawa.
nHow to dispose the batteries
ThisisanexplanationaboutthenewEUBatteryDirective(DIRECTIVE2006/66/EC).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.ofce.Donot
dispose them as domestic household waste.
Batterytype:silveroxidebattery
Notice: The symbol means they shall be sorted out and collected as ordained in
ANNEXIIinDIRECTIVE2006/66/EC.
9th Edition: Aug. 05, 2015-00
MediaNo.IM12J05D02-01E 9thEdition:Aug.2015(YK)
All Rights Reserved Copyright © 2003, Yokogawa Electric Corporation

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IM 12J05D02-01E
uSafety Precautions
n Safety,Protection,andModicationoftheProduct
• 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 liability 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, of injury, electric shock, or fatalities. 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.
CAUTION
This symbol gives information essential for understanding the operations and functions.
NOTE
This symbol indicates information that complements the present topic.
ThissymbolindicatesProtectiveGroundTerminal.
ThissymbolindicatesFunctionGroundTerminal.Donotusethisterminalastheprotective
ground terminal.
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
manuals 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
particular 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
contact our sales representative or your local distributor.
9th Edition: Aug. 05, 2015-00

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IM 12J05D02-01E
nWarning and Disclaimer
Theproductisprovidedonan“asis”basis.YOKOGAWAshallhaveneitherliabilitynor
responsibility to any person or entity with respect to any direct or indirect loss or damage arising
fromusingtheproductoranydefectoftheproductthatYOKOGAWAcannotpredictinadvance.
nLabel
The next warning label is put on the product.
nDrawing Conventions
Somedrawingsmaybepartiallyemphasized,simplied,oromitted,fortheconvenienceof
description.
Some screen images depicted in the user’s manual may have different 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.
nWarranty and service
Yokogawa products and parts are guaranteed free from defects in workmanship and material
undernormaluseandserviceforaperiodof(typically)12monthsfromthedateofshipmentfrom
the manufacturer.
Individual sales organisations can deviate from the typical warranty period, and the conditions of
sale relating to the original purchase order should be consulted. Damage caused by wear and
tear, inadequate maintenance, corrosion, or by the effects of chemical processes are excluded
from this warranty coverage.
9th Edition: Aug. 05, 2015-00

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IM 12J05D02-01E
Intheeventofwarrantyclaim,thedefectivegoodsshouldbesent(freightpaid)totheservice
departmentoftherelevantsalesorganisationforrepairorreplacement(atYokogawadiscretion).
The following information must be included in the letter accompanying the returned goods:
• Partnumber,modelcodeandserialnumber
• Originalpurchaseorderanddate
• Lengthoftimeinserviceandadescriptionoftheprocess
• Descriptionofthefault,andthecircumstancesoffailure
• Process/environmentalconditionsthatmayberelatedtothefailureofthedevice.
• Astatementwhetherwarrantyornonwarrantyserviceisrequested
• Completeshippingandbillinginstructionsforreturnofmaterial,plusthenameandphone
number of a contact person who can be reached for further information.
Returnedgoodsthathavebeenincontactwithprocessuidsmustbedecontaminated/
disinfectedbeforeshipment.Goodsshouldcarryacerticatetothiseffect,forthehealthand
safety of our employees.
Material safety data sheets should also be included for all components of the processes to which
the equipment has been exposed.
9th Edition: Aug. 05, 2015-00

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IM 12J05D02-01E
Model DO402G
Dissolved Oxygen Converter
[Style: S3]
IM 12J05D02-01E 9th Edition
9th Edition: Aug. 05, 2015-00
TABLE OF CONTENTS
uIntroduction....................................................................................................i
uSafety Precautions .......................................................................................ii
1. Introduction and General Description ................................................... 1-1
1.1 Instrument Check.............................................................................................. 1-1
1.2 Application......................................................................................................... 1-2
1.3 General information.......................................................................................... 1-3
1.4 CongurationchecklistforDO402 ................................................................. 1-6
1.5 SystemConguration ...................................................................................... 1-7
1.5.1 Dissolved Oxygen Sensor ................................................................. 1-7
1.5.2 The holders ........................................................................................ 1-8
2. DO402GSpecications............................................................................ 2-1
2.1 General............................................................................................................... 2-1
2.2 Operatingspecications.................................................................................. 2-4
2.3 Modelandsufxcodes .................................................................................... 2-5
3. Installation and Wiring............................................................................. 3-1
3.1 Installation and dimensions ............................................................................ 3-1
3.1.1 Installation site ................................................................................... 3-1
3.1.2 Mounting methods ............................................................................. 3-1
3.2 Wiring ................................................................................................................. 3-4
3.2.1 WiringofDO30G................................................................................ 3-4
3.2.2 WiringofDO70G................................................................................ 3-5
3.2.3 Preparation ........................................................................................ 3-6
3.3 Wiring the power supply .................................................................................. 3-7
3.3.1 Generalprecautions .......................................................................... 3-7
3.3.2 Access to terminal and cable entry.................................................... 3-7
3.3.4 Groundingthehousing ...................................................................... 3-9
3.3.5 Switching on the instrument............................................................. 3-10
3.4 Wiring the contact signals ............................................................................. 3-10
3.4.1 Generalprecautions ........................................................................ 3-10
3.4.2 Contact outputs................................................................................ 3-10
3.4.3 Contact input .................................................................................... 3-11
3.5 Wiring the analog output signals .................................................................. 3-11
3.5.1 Generalprecautions ........................................................................ 3-11

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IM 12J05D02-01E 9th Edition: Aug. 05, 2015-00
3.5.2 Analog output signals....................................................................... 3-12
3.6 Wiring the standard galvanic sensor............................................................ 3-12
3.7 Wiring other galvanic sensors ...................................................................... 3-13
3.8 Wiring the standard optical sensor (DO70G)............................................... 3-14
3.9 Wiring polarographic sensors....................................................................... 3-16
3.10 Wiring RS-485 signal ...................................................................................... 3-16
4. Operation; Display Functions And Setting............................................ 4-1
4.1 Operator interface............................................................................................. 4-1
4.2 Explanation of operating keys......................................................................... 4-2
4.3 Setting passcodes ............................................................................................ 4-3
4.4 Display functions (default)............................................................................... 4-4
5. Parameter setting ..................................................................................... 5-1
5.1 Maintenance mode ........................................................................................... 5-1
5.1.1 Manual activation of Hold................................................................... 5-2
5.1.2 ManualWashstart/stop ..................................................................... 5-3
5.1.3 Setpoint adjustment ........................................................................... 5-4
5.2 Commissioning mode ...................................................................................... 5-5
5.2.1 Setpoints ............................................................................................ 5-6
5.2.2 Range................................................................................................. 5-8
5.2.3 Hold.................................................................................................. 5-10
5.2.4 Wash ................................................................................................ 5-12
5.2.5 Service ............................................................................................. 5-13
5.3 Notes for guidance in the use of service coded settings........................... 5-14
5.3.1 Parameterspecicfunctions............................................................ 5-14
5.3.2 Temperature functions ..................................................................... 5-15
5.3.3 Calibration functions ........................................................................ 5-16
5.3.4 mA output settings ........................................................................... 5-17
5.3.5 Contact outputs................................................................................ 5-18
5.3.6 Userinterface................................................................................... 5-22
5.3.7 Communication setup ...................................................................... 5-23
5.3.8 General ............................................................................................ 5-24
5.3.9 Test and setup mode........................................................................ 5-24
6. Calibration Procesure.............................................................................. 6-1
6.1 General............................................................................................................... 6-1
6.1.1 Calibrationmethods........................................................................... 6-1
6.1.2 Diagnosticfunctionsperformedduringcalibration ............................ 6-2
6.2 Calibration procedure using air calibration method..................................... 6-2
6.2.1 Preparation ........................................................................................ 6-2
6.2.2 Procedureforaircalibration............................................................... 6-3
6.3 Calibration procedure using water calibration method ............................... 6-4
6.3.1 Preparation ........................................................................................ 6-4
6.3.2 Calibrationoperation(watercalibrationmethod)............................... 6-4

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IM 12J05D02-01E 9th Edition: Aug. 05, 2015-00
6.3.3 ProcedureforWatercalibration ......................................................... 6-5
6.4 Calibration method using manual calibration method................................. 6-6
6.4.1 Preparation ........................................................................................ 6-6
6.4.2 Procedureformanualcalibration....................................................... 6-7
7. Maintenance.............................................................................................. 7-1
7.1 Overall dissolved oxygen metering system .................................................. 7-1
7.1.1 Inspection and maintenance to be implemented periodically ........... 7-1
7.1.2 Inspection and maintenance to be implemented on occasion .......... 7-1
7.2 Periodic maintenance for the EXA DO402G converter................................. 7-2
7.3 Fuse Replacement ............................................................................................ 7-2
8. Troubleshooting ....................................................................................... 8-1
8.1 Measures in the case of converter operation failure .................................... 8-1
8.1.1 No dissolved-oxygen converter operation ......................................... 8-1
8.1.2 Operation key or display failure ......................................................... 8-1
8.2 Measures in the case of failure (Error) detection .......................................... 8-1
9. Spare Parts................................................................................................ 9-1
10. Appendix ................................................................................................. 10-1
10.1 Setpoint............................................................................................................ 10-1
10.2 Range ............................................................................................................... 10-1
10.3 Hold .................................................................................................................. 10-1
10.4 Wash................................................................................................................. 10-2
10.5 User setting table ............................................................................................ 10-2
Customer Maintenance Parts List (for Style: S3) ............. CMPL 12J05D02-03E
Revision Information ...............................................................................................i

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<1. Introduction and General Description> 1-1
IM 12J05D02-01E
1. Introduction and General Description
The Yokogawa EXA is a 4-wire converter designed for industrial process monitoring,
measurement and control applications. This instruction manual contains the information needed
to install, set up, operate and maintain the unit correctly. This manual also includes a basic
troubleshooting guide to answer typical user questions.
Yokogawa can not be responsible for the performance of the EXA analyzer if these instructions
are not followed.
1.1 Instrument Check
Upondelivery,unpacktheinstrumentcarefullyandinspectittoensurethatitwasnotdamaged
duringshipment.Ifdamageisfound,retaintheoriginalpackingmaterials(includingtheouter
box)andthenimmediatelynotifythecarrierandtherelevantYokogawasalesofce.
Makesurethemodelnumberonthenameplateafxedtotheleftsideoftheinstrumentagrees
with your order.
CAUTION
The nameplate will also contain the serial number and power supply selection.
Besuretoapplycorrectpowertotheunit.
Checkthatallthepartsarepresent,includingmountingbracket,asspeciedintheoptioncodes
at the end of the model number. For a description of the model codes, refer to Chapter 2 of this
manualunderGeneralSpecications.
BasicPartsList: ConverterEXA402
 User’sManual(Seemodelcodeforlanguage)
 Optionalmountingbracketwhenspecied(Seemodelcode)
9th Edition: Aug. 05, 2015-00

<1. Introduction and General Description> 1-2
IM 12J05D02-01E
1.2 Application
The EXA converter is intended to be used for continuous on-line measurement in industrial
installations. The unit combines simple operation and microprocessor-based performance with
advanced self-diagnostics and enhanced communications capability to meet the most advanced
requirements. The measurement can be used as part of an automated process control system.
It can also be used to indicate dangerous limits of a process, to monitor product quality, or to
functionasasimplecontrollerforadosing/neutralizationsystem.
Yokogawa designed the EXA analyzer to withstand harsh environments. The converter may
beinstalledeitherindoorsoroutsidebecausetheIP65(NEMA4X)housingandcablingglands
ensuretheunitisadequatelyprotected.Theexiblepolycarbonatewindowonthefrontdoorof
the EXA allows pushbutton access to the keypad, thus preserving the water and dust protection
of the unit even during routine maintenance operations.
A variety of EXA hardware is optionally available to allow wall, pipe, or panel mounting. Selecting
a proper installation site will permit ease of operation. Sensors should normally be mounted close
to the converter in order to ensure easy calibration and peak performance. If the unit must be
mounted remotely from the sensors, WF10 extension cable can be used up to a maximum of 50
metres(150feet)withaBA10junctionbox.
TheEXAisdeliveredwithageneralpurposedefaultsettingforprogrammableitems.(Default
settingsarelistedinChapter5andagaininChapter10).Whilethisinitialcongurationallows
easystart-up,thecongurationshouldbeadjustedtosuiteachparticularapplication.Anexample
of an adjustable item is the type of temperature sensor used. The EXA can be adjusted for any
one of four different types of temperature sensors.
Torecordsuchcongurationadjustments,writechangesinthespaceprovidedinChapter
10ofthismanual.BecausetheEXAissuitableforuseasamonitor,acontrolleroranalarm
instrument,programcongurationpossibilitiesarenumerous.
Detailsprovidedinthisuser’smanualaresufcienttooperatetheEXAwithallYokogawasensor
systems and a wide range of third-party commercially available probes. For best results, read this
manual in conjunction with the corresponding sensor user’s manual.
9th Edition: Aug. 05, 2015-00

<1. Introduction and General Description> 1-3
IM 12J05D02-01E
1.3 General information
Flexibility,reliabilityandlowmaintenanceareamongthebenetsprovidedbytheEXADO402G
dissolved oxygen analyzer. Designed to meet the exacting requirements of measuring dissolved
oxygen in the modern industrial environment, it contains many features to ensure the best
precision whatever the application.
This4-wireconverterishousedinarobustIP65eldmountablecase.TwomAoutputs,four
relays,digitalcommunicationandaclearLCDmaketheDO402Gatrulycomprehensive
package.
TheDO402GfeaturesPIcontrolonboththeauxiliarymAoutputandthepulseproportionalrelay
outputs, thus avoiding the need for a separate controller.
The famous EXA sensor diagnostics are now expanded with a logbook facility in combination
with the RS-485 two wire communication software option. This can be used to record events like
calibrationanddiagnosticmessages,andtoupdatecongurationoftheconverterremotely.
TheDO402Gacceptsinputsfromgalvanic,polarographicandopticalsensors.Percent
saturation,mgoxygen/Lwater,andppmDOcanbedisplayedandtransmitted.Compensation
for atmospheric pressure altitude, salinity and temperature are included for the best accuracy of
measurement.
lFeatures
• Simple3leveloperation
• Displaymg/L,ppm,%saturation
• Aircalibrationorsaturatedwatercalibration
• Chlorideconcentrationcompensationcanbeprogrammed
• Automatictemperaturecompensation
• Built-inbarometricairpressurecompensation
• “Hold”functionenablesxedoutputsignalduringmaintenance
• TwoseparatemAoutputsignals
• Wideexibilityincorporatingfreeprogrammablerangesettings,selectionofoutputsignals
and alarm functions
• Analogoutputwithadjustabledampingtime
• Passwordprotectionforeachprogramminglevel
• Built-inwashtimerwithremotestartpossibility
• IP65weatherprotection
• Universalmountingpossibilities
• Sensordiagnostics
• RS-485bi-directionalcommunication
• LogbookviaRS-485link
• PIcontrolonmAandpulsedcontactcontrols
lMethod of operation
The EXA DO30 operates on a galvanic cell principle.
The sensor contains a measuring cell consisting of a silver cathode and a lead anode. The
voltagegeneratedbythiselectrodepairissufcienttogenerateaspontaneousreductionof
oxygen at the cathode, so no external voltage source for this reaction is required. The electrodes
are immersed in an electrolyte containing potassium hydroxide. Oxygen molecules can pass
through a permeable membrane into the cell. The output current of the cell is directly related to
the partial pressure of oxygen at the sample side.
Inthesensorathermistorisintegratedtobeabletocorrectfortemperaturechanges.Both
signals are used in the converter to ensure an automatically compensated value for dissolved
oxygen. Calibration is worked out by simple air calibration to make sure that the performance of
the instrument will be maintained.
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<1. Introduction and General Description> 1-4
IM 12J05D02-01E
TheDO70Gsensoroperatesbasedontheprincipleofoptical(uorescence)measurement.
Thesensorcomprisesauorescentmembrane,light-emittingpart,light-receivingpart,and
internal circuit.
An external power source is required. Oxygen molecules pass through the permeable membrane
toauorescentsubstanceandshiftthephaseofuorescentemission.Thedegreeofthisshiftis
inversely proportional to the partial pressure of oxygen on the sample side, resulting in the output
of a current equivalent to the polarographic current adjusted by the internal circuit.
A temperature sensor is integrated in both sensors, and the temperature signals are used to
automatically compensate the measurements of dissolved oxygen.
The combination of air-saturated water calibration and zero calibration helps maintain the
performance of the instrument.
lDisplay functions and ranges
The display continuously gives you all necessary information at a glance. The process values are
shownineasilyreadableprogrammableunits.Eithermg/L.%saturationorppmcanbechosen.
Theuser-interfaceissimpliedtoabasicsetof6keysaccessiblethroughtheexiblewindow
cover. It uses a simple step by step, question and answer style to communicate with the operator
by giving messages on the second line of the display and indicating which keys are to be pressed
in the display.
lAutomatic air calibration
Calibrationforadissolvedoxygeninstrumentisperformedbysimpleaircalibration(pleaserefer
to6.3.1sectionfortheopticalsensor).
Criteriaforautomaticcalibration(stabilizationtime,DOvalues)canbesettosuitthesensor.
In addition to the air calibration three additional calibration procedures can be used:
1. Span calibration using air saturated water
2. Zerocalibrationusingsultesaturatedwater
3. Process calibration using laboratory reference method
lAlarm and control functions
TheEXADO402hasfourbuilt-inrelaycontacts.Fromthefactorythersttwocontactsarepre-
denedasahighorlowalarm.
Thethirdcontactitspre-denedasawashcontact.Thiswashcontactisdrivenbyawash-timer
with adjustable wash-time, interval time and relaxation time to control the wash cycle.
Thefourthcontactisxedtofunctionasanalarm,indicatingthattheEXAhasfoundafaultinthe
measuringloop.FAILsafe.
lCleaning
Incombinationwiththeappropriatesensorandimmersiontypettingthewashtimerwith
remote start possibility can be used. Interval-time, washing time and relaxation time are free
programmable.
lDamping time on output signal
Undercertaincircumstancesdisturbancescancausehighpeaksintheoutputsignal.Toavoid
thesedisturbancestheEXADO402hasanelectroniclteringwhichaveragestheoutputsignal
during a programmable period. This damping time is programmable between 0 and 120 seconds.
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IM 12J05D02-01E
lSalinity compensation
In order to take the effect of salinity into account for oxygen measurement an average chloride
concentration can be programmed. The chloride concentration value is set manually via
the service level. The EXA DO402 takes account of the effects of salinity and temperature
simultaneously. The advantage of this construction is that the result of the measurement is
available immediately. A separate conversion table is not necessary.
lTemperature compensation
The micro-processor makes an accurate temperature compensation possible that performs well
over the entire range of the instrument. No further adjustment tables are required.
lBarometric air pressure compensation
Airpressuredifferences,duetoweatherconditionsoraltitude,cancauseavariationupto20%
in the dissolved oxygen concentration. A built-in air pressure sensor automatically compensates
forbarometricinuencesbetween900to1100mbar(90to110kPa).
lSensor diagnostics
The DO sensor is checked for low impedance between the silver electrode and an earth
contact in the liquid, to detect membrane integrity. Temperature sensor connections and sensor
connectionsarecheckedforimpedance.ThesefaultsaresignalledbytheFAILcontactandcan
besignalledtothecontrolroombyanoutputof0/3.5mAor22mA.Thefaultisalsosignalled
byaspecialmarkerheldonthedisplay,aLEDonthefrontandanerrorcodeinthemessage
display.
DuringcalibrationofaDOmeasuringsystemtheslopedeviationfromnominalvalue(%)and
sensoroutput(μA)at0mg/Larecalculatedandchecked.
If any of these are outside the limits, an error is signalled.
lLogbook
Software record of important events and diagnostic data. Available through RS-485, for use with
the Yokogawa PC402 communication software.
lSerial Communication
Bi-directionalaccordingtotheEIA-485standardusingHART-protocolandPC402software.
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<1. Introduction and General Description> 1-6
IM 12J05D02-01E
1.4 CongurationchecklistforDO402
Standardconguration Options Reference for change
Measuredvariable(s)
Primary inputs D.O. and Temp
DO range 0-20mg/L anyspanwithin0-50mg/L “range”
DO units mg/L ppm.%saturation code56
Temperature range 0- 50 °C 25 °C minimum span “range”
Temperature unit Celsius Fahrenheit code 11
Outputs
Analog output 4- 20 mA for DO 0-20 mA or 4-20 mA code 30
Second output 4- 20 mA for Temp 0-20 mA or 4-20 mA code 30
Output allocation DO and Temp DO, Temp, Table, Pl control code 31
Contact outputs S1=highat19.5mg/L
S2=lowat1.0mg/L
(4)freelyprogrammable “setpoint”
code 40. 41, 42, 43
Contact allocation mg/LandFAIL mg/L,temp,wash,Plcontrol,
HOLD
code 40- 43
Contact variables dead time= 0.2 s; hyst=
0.1mg/L
time:0-200s;hyst0-20mg/L code 44
Add. contact functions none time out alarm code 47
Control functions none Pl on contacts or mA2 output code45,46,3433
Digital outputs none RS-485 code60
Communication
Digital interface disabled RS-485 code60
Communication software disabled PC402 contact factory
Variablesondisplay mg/Landtemp %sat,°C,mA1,mA2,SL,ZR,
REL
“display”
Burnout disabled burnlow(3.5)/high(22)on
mA1/mA2
code 32
Password protection disabled formains/comm./servlevel code 52
Autoreturn return to measure in 10
minutes
enable or disable code 50
Add. functions in MAINT disabled washstart/setpointadj code 51
Diagnostics
Membrane condition active enable or disable code 02
Check on Slope active enable or disable code 02, 22
Check on zero disabled enable or disable code 02, 21, 22
Check on stability 0.05mg/Lper60s 0-50mg/Lin10-600s code 20
Compatibility
DO Sensor DO30 DOX8,DO410,Ingold,DO70G code 01, 10
Temperature sensor Pt1000 Pt100,PB36,22kNTC code 10
Membrane thickness 50μm(2mil) 25or50μm(1or2mil),adj.
slope
code 01
Sensor principle galvanic galvanic or polarographic *1 code 01, “wiring”
Manual temp. comp. disabled disable or enable code 13
Special Features
Salinity compensation disabled comp. for 0- 100 ppt NaCI code 04
Temperature calibration none adjustment+/-7.5°C code 12
Zero calibration disabled disable or enable code 21
Sensor washing disabled interval<36hours,washtime
0.1-10 min.
“Wash”
HOLDduringmaintenance disabled holdlastorholdx “Hold”
ContactduringHOLD disabled possible on S1,S2, S3 or S4 code 40-42
Atm. press. compensation active active or manual
Soft fail alarm disabled possible for E1..E4, E7..E9,
E12,E16,E22
code 53
Logbook disabled 2 volumes of 50 events code61,62
*1: Choose a polarographic sensor for an optical dissolved oxygen sensor.
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<1. Introduction and General Description> 1-7
IM 12J05D02-01E
1.5 SystemConguration
(For DO30G)
Output Signal:
4 to 20 m A DC or
0 to 20 m A DC
●DO30G
●DOX8A
●DOX8W
●DO70G ●DO402G
●WTB10-DO3
Alarm Contact Output
4-Contact Point, High/Low Alarm
Cleaning Time, Alarm Contact
HOLD Contat
100V AC±15%
115V AC±15%
230V AC±15%
●Guide Pipe
PH8HG
●Submersion Type Holder
DOX8HS
●Suspension Type Holder
HH350G
●Floating Ball Holder
PB350G
Dissolved Oxygen Sensor
Spere Parts Set
Holders, Holders with Cleaning System Dissolved Oxygen Converter
PB360G
Calibration Set
●DOX10
(For DO30G)
(For DO30G)
(For DO30G) (For DO70G)
Select pin terminal
for DO402G.
No Cleaning Jet Cleaning
Terminal Box
Power Supply Unit
*: DOX10 is unusable depending on a use area.
1.5.1 Dissolved Oxygen Sensor
TheDO402Gcanbeusedwithavarietyofsensors.Somespecicprogrammingmaybe
necessary to match the converter with the sensor.
lDO70G sensor
This sensor features temperature compensation with a 22k NTC RTD. The nominal output of
thissensoris60nAinairunderreferenceconditions.Beforeuse,entertheservicemode.Select
servicecode01(*S.TYPE)andsetitto1(polarographicsensor),thenpresstheENTkey.Select
*1.CELL2.9andsetthenominaloutputto60nA.Next,selectservicecode10(*T.SENS)andset
itto3(22kNTC).Thenselectservicecode21(*0.CAL)andsetitto1(zerocalibrationenabled)
because twopoint calibration by air-saturated water calibration and zero calibration are required.
Fordetails,refertoGS12J05D04-01E.
lModel DOX8SM sensor
ThissensorisagalvanicsensorwithaPB36typetemperaturecompensatoranda25micron
membrane(1mil).
Thissensorhasanominaloutputcurrentof7.5μAinambientairunderreferenceconditions.
In Service code 01 selection 1 must be programmed when this sensor is used. The membrane
checkisinactivewiththissensorunlessexternalsolutiongroundisused.(metalholderor
sampleline)
lModel DO30G sensor
This sensor is essentially the same as the DOX8SM sensor, but it has a 50 micron membrane,
xedsensorcable,Pt1000RTDtemperaturecompensationandintegralsolutiongroundthat
allowsmembranechecking.Thenominaloutputofthissensoris3.75μAinairunderreference
conditions.
InServiceitem”*I.CELL”selection0mustbeprogrammedwhenthissensorisused.
Fordetails,refertoGS12J05D03-01E.
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<1. Introduction and General Description> 1-8
IM 12J05D02-01E
lModel DO30 sensor
ThissensorisspeciedinGS12J6K4-E-Eanditcanbesuppliedwith50orwith25micron
membrane.
Normally 50 micron membrane is used and no reprogramming is necessary. Otherwise Service
code 01 setting must be changed from 0 to 1.
lIngold model 32 sensors with 12, 19 and 25 mm shaft
Thesesensorsareavailableinmanydifferentcongurations.Thesensorisapolarographic
sensor and therefore settings of service code 01 has to be changed from 0 to 1.
The sensor output is normally between 30 and 100 nA in ambient air under reference conditions,
but the “large cathode” version has a current output between 200 and 700 nA. To utilize Slope
diagnosticfeatures,itisbesttoreadcurrentoutputduringrstaircalibrationin“display”mode
and to enter that value in service code 01.
The temperature compensator is a NTC resistance and that can be chosen by entry of 3 in code
10.
The wiring of the sensor is different as well:
The red wire: the anode goes to terminal 18
The white wire: the cathode goes to terminal 17
Thegreen/yellowwire:theshieldgoestoterminal14andthe2blackwiresforNTCgototerminal
11 and 12.
The membrane checking feature cannot be used for these sensors, due to the construction of the
sensor.
1.5.2 The holders
l PB30oatingballholder
AllYokogawasensorsarecompatiblewiththeoatingballholderthatisspeciedinGS12J6K4-
E-EandGS12J5A1.
l FD30immersiontting
TheDO30sensoriscompatiblewiththeFD30immersionholderasspeciedinGS12J6K4-E-E
andwithallowttingsandowttingsubassembliesthatarespeciedinGS12D7K2.
lDOX8HS submersion type holder
TheDOX8SMandtheDO30GsensorarecompatiblewiththeDOX8HSholderandallPH8
model holders.
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  <2.DO402GSpecications> 2-1
IM 12J05D02-01E
2. DO402GSpecications
2.1 General
l Inputspecications
TheDO402GDissolvedOxygenconvertermeasuresthecurrent,thatisgeneratedbythe
DissolvedOxygensensor.Theexibilityoftheinputcircuitallowstheuseofmanycommercially
availablesensors,whethertheyareoftheGalvanictype(drivingvoltagegeneratedinternally)or
Polarographictype(drivingvoltagesuppliedbyconverter)
The input range varies from 0.0 nA up to 500 nA for optical, polarographic sensors and 0.0 to 50
μAforgalvanicsensors.
Temperature measurement for automatic temperature compensation utilizes Pt100, Pt1000 RTD
elementsorPB36asusedinDOX8,DO30andDO70Gsensors,aswellasthe22kNTCasused
by the Hamilton Oxyferm.
lMeasurement ranges
DO:  0-50mg/L(ppm)
Temperature: 0-50ºC(32-122ºF)
lSpan
DOconcentration: minimum:1mg/L(ppm)
   maximum:50mg/L(ppm)
%saturation: minimum:10%
  maximum:300%
Temperature: minimum:25ºC(77ºF)
  maximum:50ºC(122ºF)
lOutput Signals
Twoisolatedoutputsof0/4-20mADCwithcommonnegative.
Maximumload600Ohm.
AuxiliaryoutputcanbechosenfromTemperature,DO,PIcontrol,table,burnup(22mA)orburn
down(0or3.5mA)tosignalfailure
lTemperature compensation
0 to 50 ºC
Sensortypes: Pt100orPt1000RTD;PB36(Yokogawacompatible);22kNTC(Ingold
compatible)
Automatic or Manual temperature compensation
lCalibration
Semi-automaticcalibrationwithautomaticcompensationforinuenceofbarometricpressure
andaltitudeonpartialpressureofoxygeninair(orsolubilityofoxygeninwater).Automatic
compensationforinuenceofsalinityofwateronsolubilityofoxygeninwaterisprogrammable.
The correction for pressure, salinity and temperature meets ISO 5814
Possible calibration routines are:
 Slope(span)calibrationinambientair.Thecalibrationtableisbasedon70%RHandis
determined empirically.
Slope(span)calibrationinwater,saturatedwithair:accordingISO5814
Zerocalibration(normallyinactive)
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  <2.DO402GSpecications> 2-2
IM 12J05D02-01E
lSerial Communication
Bi-directionalaccordingtotheEIA-485standardusingHARTprotocolandPC402software.
lLogbook
Software record of important events and diagnostic data.
Available through RS-485, with key diagnostic information available in the display.
lDisplay
Customliquidcrystaldisplay,withamaindisplayof31/2digits12.5mmhigh.Messagedisplay
of6alphanumericcharacters,7mmhigh.
lContact outputs
General: Four(4)SPDTrelaycontactswithLEDindicators.ForS1,S2,andS3,theLEDis
on when relay is powered.
NOTE: ForS4(FAIL)LEDlightswhenpowerisremoved(Failsafe).
   Contactoutputscongurableforhysteresisanddelaytime.
-Capacity: Maximumvalues100VA,250VAC,5Amps.
  Maximumvalues50Watts,250VDC,5Amps.
-Status: High/Lowprocessalarms,selectedfromprocessparametersandtemperature.
Contact output is also available to signal “Hold Active
Contact S1 to S3 Contact S4
Status LED NO NC LED NO NC
Alarm,FAIL,OFF On Closed Open On Open Closed
Alarm,FAIL,OFF Off Open Closed Off Closed Open
Power OFF Off Open Closed Off Open Closed
Controlfunction: On/Off
PI pulsed Proportional duty cycle control with integral term.
PI frequency Proportional frequency control with integral term. In addition wash cleaning
controlsignalonS3,andFAILalarmforsystemanddiagnosticerrorsonS4
lContact input
WhenaDO70Gisconnected,contactinputcannotbeused.
Voltage-freecontact(donotapplyvoltage)
Washstartorinputremoterangechange(eitherchoice)
 Onresistance: 10Ωorless
 Offresistance: 100kΩormore
On time: 0.5 sec. or more
Note: Atthecircumstanceinuencedfromnoise(e.g.longtransmissionofcontactinput),insertionofarelaynearDO402Gis
recommended for insulating.
lPower supply
Supplyvoltagerating: 100,115,230VAC
Applicablerange: 85to115,97.8to132.2,195.5to264.5VAC
Supplyfrequencyrating: 50/60Hz
Applicablerange: 50Hz±5%/60Hz±5%
Powerconsumption: Maximum10VAforsteadyoperation
9th Edition: Aug. 05, 2015-00

  <2.DO402GSpecications> 2-3
IM 12J05D02-01E
lSafety and EMC conforming standards ,
Safety:conformstoEN61010-1
 EN61010-2-030
 CAN/CSANo.61010-1
 ULStd.No.61010-1
CSA C22.2 No. 94.2
 UL50E
EMC: EN61326-1*ClassA,Table2(Foruseinindustriallocations)(Note1)
 EN61326-2-3
 EN61000-3-2ClassA
 EN61000-3-3
EMC Regulatory Arrangement in Australia and New Zealand
  EN55011ClassA,Group1
 KoreaElectromagneticConformityStandardClassA
한국 전자파적합성 기준
*: Inuenceofimmunityenvironment(CriteriaA):Outputshiftisspeciedwithin±25%ofF.S.
Installation altitude: 2000 m or less
CategorybasedonIEC61010:II(Note2)
PollutiondegreebasedonIEC61010:2(Note2)
Note 1: This 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.
A급 기기 (업무용 방송통신기자재)
이 기기는 업무용(A급) 전자파적합기기로서 판매자 또는
사용자는 이 점을 주의하시기 바라며, 가정외의 지역에서
사용하는 것을 목적으로 합니다.
Note2: Installationcategory,calledovervoltagecategory,speciesimpulsewithstandvoltage.CategoryIIisforelectricalequipment.
Pollution degree indicates the degree of existence of solid, liquid, gas or other inclusions which may reduce dielectric
strength. Degree 2 is the normal indoor environment.
lShipping details
Package size: w x h x d 290 x 300 x 290 mm. 11.5 x 11.8 x 11.5 in.
Packedweight:approx.2.5kg(5lb).
lConnection via cables
Thedistancebetweenthesensorandtransmittercanbeupto50miftheWTB10junctionbox
isused.ThisjunctionboxcannotbeusedfortheDO70G,forwhichtheallowablemaximum
distance is 10 m.
9th Edition: Aug. 05, 2015-00