Qel QTS-6100 Series User manual

MODEL QTS-6100 SERIES
ANALOG TRANSMITTER/SENSOR
INSTALLATION
OPERATIONAND MAINTENANCE
MANUAL
QUATROSENSEENVIRONMENTALLTD.
5935 OTTAWASTREET, POBOX 749 RICHMOND, ONTARIOCANADAK0A2Z0
PHONE:[phone] FAX:[phone]
www.QEL.dedesco.com

B71050-021-000-RB.docELECTROCHEMICALTRANSMITTER
JUL. 18 2007 PRODUCTMANUAL
GENERALSPECIFICATIONS
DIMENSIONS:
ExplosionProof:5.7”Wx8.2”Hx4.2”D(145mm x210mm x110mm)
POWERSUPPLY:24 VDC(12-36 VDC)
SIGNAL:4-20 mALinear(maximumoverscale:25 mA)
Zero=4.00 mA±0.1mA
WIRING:2-Wire14 -24 AWG
SENSORTYPE: Electrochemical
HUMIDITY: Continuous:15%-90%RHNon-Condensing
Intermittent:0-099%RHNon-Condensing
Standard Recommended
Model Gas Gas Measurement AlarmSettings Operating Recommended
Number Code Type Range Warning Alarm Temperature Mtng. Height*
QTS-61110x- 110 H
2
S 0-25 ppm 5 ppm 10 ppm -40° Cto+50° C Low
QTS-61115x- 115 HCN 0-20 ppm 10 ppm 15 ppm -20° Cto+50° C Mid
QTS-61120x- 120 Cl
2
0-3 ppm 0.5 ppm 2 ppm -20° Cto+50° C Low
QTS-61123x- 123 ClO
2
0-1 ppm 0.1 ppm 0.3 ppm -20° Cto+50° C Low
QTS-61125x- 125 HCL 0-10 ppm 5 ppm 7 ppm -20°Cto+50° C Mid
QTS-61140x- 140 SO
2
0-6 ppm 2 ppm 5 ppm -20°Cto+50° C Low
QTS-61150x- 150 NO
2
0-6 ppm 1 ppm 3 ppm -20°Cto+50° C Low
QTS-61160x- 160 CO 0-250 ppm 10 ppm 100 ppm -20°Cto+50° C Mid
QTS-61190x- 190 NO 0-100 ppm 25 ppm 50 ppm -20°Cto+50° C Mid
QTS-61211x- 211 H
2
0-2000 ppm 500 ppm 1000 ppm -20°Cto+50° C High
QTS-61220x- 220 NH
3
0-50 ppm 25 ppm 35 ppm -25°Cto+30° C High
QTS-61230x- 230 C
2
H
4
O 0-20 ppm 2 ppm 5 ppm -20°Cto+50° C Low
QTS-61240x- 240 O
3
0-3 ppm 0.5 ppm 2 ppm -20°Cto+50° C Mid
*Low=9”to18”(.23 to.45 m)abovefloor
*Mid=4ft to6ft (1.2to1.8m)abovefloor
*High =9”to18”(.23 to.45 m)belowceiling

QTS-6000 Series
AnalogTransmitter/Sensor
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WARRANTYSTATEMENT
Theinformationcontainedinthismanualisbasedupondataconsideredaccurate;however,nowarrantyis
expressedorimpliedregardingtheaccuracyofthisdata.AllQELequipmentiswarrantedagainstdefects
inmaterialandworkmanshipforaperiodoftwoyearsfromdateofshipmentwiththefollowingexceptions:
ElectrochemicalSensors(Toxic)SixMonths
CatalyticSensors(Combustible)OneYear
Duringthewarrantyperiodwewill repairorreplace,atourdiscretion,anycomponentsorcompleteunits
thatprove,inouropinion,tobedefective.Wearenotliableforconsequentialorincidentaldamageto
auxiliaryinterfacedequipment.
Areturnedmaterialauthorizationnumbershouldbeobtainedfromthefactorypriortoreturninganygoods.
Allreturnshipmentsmustbeshippedfreightprepaidandacopyofthemaintenance recordsshould
accompanytheunitconcerned.
WarrantyshouldbeconsideredF.O.B.thefactory.Labourandtraveltimearechargeableforanyfieldsite
visitsrequiredforwarrantywork.
LIMITEDLIABILITY
AllQELsystemsshallbeinstalledbyaqualifiedtechnician/electricianandmaintainedinstrictaccordance
withdataprovidedforindividualsystemsintheformofinstallation/maintenance manuals.QELassumes
noresponsibilityforimproperinstallation,maintenance,etc.,andstressestheimportance ofreadingall
manuals.QELshallnotberesponsibleforanyliabilityarising fromauxiliaryinterfacedequipmentnorany
damageresultingfromtheinstallationoroperationofthisequipment.
QEL’stotalliabilityiscontainedasabovewithno otherliabilityexpressedorimplied,asthepurchaseris
entirelyresponsibleforinstallationandmaintenance ofsystems.
Thiswarrantyisinlieuofallotherwarranties,expressedorimplied,andnorepresentativeorpersonis
authorizedtorepresentorassumeforQELanyliabilityinconnectionwiththesalesofourproductsother
thanthatsetforthherein.
NOTE:Duetoon-goingproductdevelopment,QELreservestherighttochangespecifications
withoutnotice andwill assumenoresponsibilityforanycostsasaresultofmodifications.
Forfurtherinformationorassistance, contact:
QUATROSENSEENVIRONMENTALLTD.
5935 OttawaStreet, POBox749
Richmond, Ontario
K0A2Z0
Tel:[phone] Fax:[phone]

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AnalogTransmitter/Sensor
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TABLE OF CONTENTS
1. INTRODUCTION.....................................................................................................................1
2. BASICDESCRIPTION............................................................................................................2
3. SPECIFICATIONSAND ORDERING INFORMATION.........................................................3
3.1MODEL NUMBER ORDERING CODE .....................................................................................3
3.2SENSOR/TRANSMITTER SPECIFICATIONS..............................................................................3
4. THEORYOFOPERATION.....................................................................................................4
4.1ELECTROCHEMICAL SENSOR ELEMENTS..............................................................................4
4.2TWO WIRE TRANSMITTERS.................................................................................................5
4.3INTRINSIC SAFETYVS EXPLOSION PROOF ENCLOSURESFOR HAZARDOUS LOCATIONS..........5
5. INSTALLATION......................................................................................................................7
5.1MOUNTING.........................................................................................................................7
5.2WIRING..............................................................................................................................8
6. CONFIGURATION..................................................................................................................9
7. START-UPAND COMMISSIONING....................................................................................11
8. ROUTINE MAINTENANCE..................................................................................................11
8.1CALIBRATION...................................................................................................................11
8.1.1EQUIPMENT REQUIRED.............................................................................................11
8.1.2PROCEDURE.............................................................................................................12
8.2SENSOR ELEMENT REPLACEMENT.....................................................................................13
8.2.1INDUSTRIAL EXPLOSION-PROOF ENCLOSURES..........................................................14
8.2.2ABSPLASTIC COMMERCIALAND NEMA4XENCLOSURES......................................14
9. FIELDTROUBLE SHOOTING.............................................................................................15
9.1SENSOR LIFE ....................................................................................................................15
9.2TRANSMITTER ELECTRONICS ............................................................................................15
9.3INSTALLATION AND APPLICATION PROBLEMS....................................................................16
9.3.1SUPPLYAND SIGNAL REVERSED...............................................................................16
9.3.2OVERVOLTAGE SUPPLY ...........................................................................................17
9.3.3EXCESSIVE BURDEN RESISTANCEOR UNDERSUPPLY VOLTAGE.................................17
9.3.4HUMIDITY PROBLEMS..............................................................................................17
9.3.5RFI/EMIEFFECTS ...................................................................................................18

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LISTOF FIGURES
FIGURE 1-TOXIC CELL CONSTRUCTION (SCHEMATIC DRAWING).............................................................................4
FIGURE 2-TWO WIRE TRANSMITTERS ............................................................................................................5
FIGURE 3-INTRINSICALLY SAFE INSTALLATION.............................................................................................6
FIGURE 4-MAXIMUM BURDEN RESISTANCE..................................................................................................8
FIGURE 5-JUMPER STYLE .............................................................................................................................9
FIGURE 6-CONFIGURATION JUMPERS -RIGHT SIDE LOCATIONS...................................................................10
FIGURE 7-CONFIGURATION JUMPERS -LEFT SIDE LOCATIONS.....................................................................10
FIGURE 8-CALIBRATION ADJUSTMENTS ......................................................................................................12
FIGURE 9-SENSOR ELEMENT INSTALLATION ...............................................................................................14
FIGURE 10 -SENSOR ELEMENT INSTALLATION .............................................................................................14
FIGURE 11 -CIRCUIT CARD ASSEMBLY ........................................................................................................16
LISTOF TABLES
TABLE 1-SENSOR/TRANSMITTER MOUNTING LOCATION
TABLE 2-SENSOR TYPE CONFIGURATION -UPPER CIRCUIT CARD ASSEMBLY
TABLE 3-SENSOR TYPE CONFIGURATION -LOWER CIRCUIT CARD ASSEMBLY

B71050-021-000-RB.docELECHROCHEMICALTRANSMITTER
May4,2005 PRODUCTMANUAL
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1.INTRODUCTION
Thankyouforpurchasing thisqualityproductfromQuatrosenseEnvironmentalLtd.(QEL).Wewantyou
toenjoymanyyearsofeffectiveuseandprotectionfromyourQTS-6100 SeriesUniversalElectrochemical
ToxicSensor/Transmitter.Thismanualisintendedtoprovideyouwithallofthedetailsyouneedto
properlyinstall, operate, andmaintainyourequipment.
Toproperlypreparetoinstall,configure,andstart-up yourQTS-6100SeriesUniversalElectrochemical
ToxicSensor/Transmitterwerecommendthatyoureadthosesectionsofthemanualbeforebeginning the
work.Thesectionsatthebeginningofthemanualcoveringdescription,specifications,andtheoryof
operationwillprovidegeneralbackgroundandreference information.Pleaserefertothesectionsattheend
ofthemanualonmaintenance, calibration, andtroubleshootingbeforeperformingthesetasks.
Throughoutthismanualyourattentionwill bedrawntocertaininformationinthefollowingmanner:
NOTE: Thiswill highlighttasksorinformationimportanttotheproperoperationofthecontroller
*CAUTION* Thiswill detail stepsthatwill causemalfunctionoftheunitifperformedimproperly
*WARNING* Thiswillindicatecriticalactionsthatcouldcauseharmtopersonnelordamagetothe
controllerorassociatedequipmentifperformedimproperly
Ifyouhaveanyquestions,oryoufind anyerrorsoromissionsinyourmanual,pleasecontactourcustomer
service teamat [phone] byphoneorfaxusat [phone].

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AnalogTransmitter/Sensor
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2.BASICDESCRIPTION
TheQTS-6100SeriesUniversalElectrochemicalToxicSensor/Transmitterisasignificantupgradefromour
previouselectrochemicalsensor/transmitters.Itfeaturesimprovedperformance andtheabilitytoconfigure
thetransmitterforanyoflonglistofelectrochemicalsensorelementsofferedbyQEL.Thetransmitters
operateoverawidetolerance ofDCpowerandprovidea4to20 mADCoutputinatwo-wireconnection.
ThesensorportionoftheseunitsisaCityTechnologycompactelectrochemicalsensorelement,selected
specificallyforthegastobemeasured.Theseelementsarecompletelysealedandareanon-consuming
technology.Thismeansthattheelectrolytesolutionisnotconsumedbythenormaloperationofthesensor.
Typicallifeforthesesensorsistwotothree yearsinnormaloperation,withrecalibrationrecommended
everythree months.See Section4-“TheoryofOperation”fordetailsonhowthesesensorsfunction.
Thetransmitterportionoftheseunitsusessolidstatecomponentsontwocircuitcardassembliestomeasure
theDCmicroampsignalfromthesensorelementandconvertittoa4to20 mADCoutput.The
transmitterelectronicscanbefieldconfiguredviasolderless shortinglinkstoacceptanyoneoftherangeof
electrochemicalsensorsoffered.Across thisrangetherearedifferingrequirementsforbatteryvoltage,gain
resistance, ashortingFET, andthepolarityofthesensoroutput.See Section6-“Configuration”fordetails
onconfiguringthetransmitter.
Thetransmitterelectronicsarepoweredwithtwo-wire24 VDCandtransmitthe4to20 mADCoutputover
thesametwowires.Theyhavebeendesignedtoprovideprotectionfrominterference causedbyRadio
Frequency(RFI) andElectro-Magnetic(EMI) sources.Thedesignshavebeentestedforproperoperation
underradiatedinterference of4wattsatadistanceof1meter.See Section5-“Installation”fordetailson
properwiringandgroundingtoensureproperoperation.
Accessiblefromthetopofthetransmitteraretestjacksthatwillacceptstandarddigitalmultimetertestleads.
Thetransmitter4to20 mADCsignalcanbemonitoredfromthesetestpointswithoutinterruptingtheoutput
signal.Twotrim potentiometersprovideadjustmentofzeroandspanforaccuratecalibrationofthe
transmittertospecificgasconcentrations.Nolinearizationadjustmentsarerequiredaselectrochemical
cellsareinherentlylinear.
Thesensor/transmitterassembliesareofferedinavarietyofenclosures.Theserangefromgeneralpurpose
NEMA1enclosuresthroughtoexplosion-proofenclosureslistedbyCSA,UL,andFMforClass1, Division
1, GroupsB,C,Dservice.Thesametransmitterboardassemblyisusedforallenclosuretypes.Theplug-
insensorelementconnectsdirectlytothetransmittercircuitcardassemblyintheABSplasticNEMA1and
NEMA4enclosures.Analuminumorstainless steelsealedsensorassemblyisprovidedfortheplug-in
sensorelementontheexplosion-proofenclosures. Thesensorconnectstothecircuitcardassemblyviaa
connectorattheendofleadsextendingfromthesensorassembly.

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3.SPECIFICATIONSAND ORDERINGINFORMATION
3.1ModelNumberOrderingCode
QTS
- 6 x - 0 0 0
TransmitterType
Non-IndicatingAnalog Output1
GasType
See SensorSelectionTableXXX
Revision
FactoryProvidedX
Enclosure
Industrial:NEMA4X,7,9c/walum. sensorhousingE(Note1)
Industrial:NEMA4X,7,9c/wSS sensorhousingS(Note1)
Commercial:NEMA1C
Commercial:NEMA4Xc/wSplashGuardN
Commercial:NEMA1DuctMountD
Options(Enter0fornoSelection)
SplashGuardG
LowTemperature(-40°C)HeaterOption(Note2)L
Non-StandardCalibrationX
Special (Consult Factory)S
Note1:Chlorinesensorassemblynot explosion-prooflisted
Note2:AvailableonlyintypeNorCenclosures
3.2Sensor/TransmitterSpecifications
InputPower: 12 to36 VDC Temperature -Sensor: See SensorSelectionTable
Fuse: 0.5Ampsocketedpicofuse Temp. -Transmitter:-40°to+50°C(-40°to+122°F)
OutputSignal: 4to20 mADCinto750 ohms Humidity-Sensor: 15 to90%RHcontinuous
at 24 VDC, Two-wireconfigurationoperating,non-condensing.
RFI/EMIProtection: 4.0Watt at 1meterradiated Humidity-Transmitter: 0to99%RH, non-condensing,
Enclosure Rating: E-NEMAType4XWeatherproof,operatingand storage
Type7and 9ExplosionProof;IP66-68, Pressure:Atmospheric±10%
Class 1, Div. 1, GroupsA, B, C, D Accuracy: ±2.5%ofReading
CSA, FM, ULlisted;Aluminum Repeatability: ±1.0%
SensorHousing(alsoGroup Arated) Approvals: CSA
S-SameasEaboveexcept withFM
316 Stainless Steel SensorHousingEE xdII C;
C, D-NEMAType1General PurposeIP68
N-NEMAType4XWeatherproofATEX0207 U
Encl. Materials:E, S-Cast Aluminum, EpoxyPainted
C, N, D-ABSPlastic
SensorTechnology: Electrochemical, non-consuming
ResponseTime: Typical less than60 secondsfor
90%responsetoastepchange
SensorLife: Typical 2to3years
SensorGasTypes:Fieldconfigurableforanysensor
fromSensorSelection
S
ENSOR
S
ELECTIONAND
S
PECIFICATION
T
ABLE
GAS SYM MODEL CODE STANDARD CAL (PPM) TEMP RANGE ºC
(NOTE 3)
TransmitterOnly --- 000 None ---
HydrogenSulphide H2S 110 0 to25 -40 to+50
HydrogenCyanide HCN 115 0 to20 -20 to+50
Chlorine Cl2120 0 to3 -20 to+50
ChlorineDioxide ClO2123 0 to1 -20 to+50
HydrogenChloride HCl 125 0 to10 -20 to+50
SulphurDioxide SO2140 0 to6 -20 to+50
NitrogenDioxide NO2150 0 to6 -20 to+50
Carbon Monoxide CO 160 0 to250 -20 to+50
NitricOxide NO 190 0 to100 -20 to+50
Hydrogen H2211 0 to2000 -20 to+50
Ammonia NH3220 0 to50 -25 to+30
EthyleneOxide C2H4O 230 0 to20 -20 to+50
Ozone O3240 0 to0.5 -20 to+50
Note3:-40°C=-40°F+30°C=+86°F
-25°C=-13°F+50°C=+122°F
-20°C=-4°F

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4.THEORY OFOPERATION
4.1ElectrochemicalSensorElements
ThesensorportionoftheQTS-6100 isacompactCityTechnologyelectrochemicalsensor.Thesesensors
aremicro-fuelcellsthatarecompletelysealedsoastobemaintenance free andstableforlongperiods.The
measurementisagas-in-liquidchemicalreactionratherthanasurface area measurement.Withnosurface
area tocoat,thesesensorsretaintheirsensitivitytogasessuchasH2Sevenafterprolongedexposuretoclean
air.
Thecellconsistsofadiffusionbarrier,O-ring seal,
electrolytereservoirandthree electrodes;Sensing,
Counter,andReference (see Fig. 1).Thetargetgasenters
thecellthroughadiffusionbarrier.Thechemical
process ofthemeasurementisoneofoxidationwhere
onemoleculeofthetargetgasisexchangedforone
moleculeofoxygen.Thereactiondrivestheoxygen
moleculetotheCounterelectrode,generatingaDC
microampsignalbetweentheSensingandCounter
electrodes.Thissignalislineartothevolume
concentrationofthesensedgasratherthanthepartial
pressure.Thesesensorswillnotrespondtonormal
variationsinatmosphericpressure.
Insomecases,biasing isrequiredtomaintainavoltagedifferentialbetweentheReference andSensing
electrodesinordertofacilitatethenecessaryreactioninthecell.Thetransmitterelectronicswill provide
thenecessarybiasvoltagewhenconfiguredforoneofthesesensortypes.Mostsensorsproduceasmall
amountof“baseline” currentincleanair.Thisisadjustedoutwiththezeropotentiometeronthe
transmitter.
Thisoxidationattheelectrodescauseswear,andlimitsthelifeofthesensor.Typicallifeforthesesensors
istwotothree yearsinnormaloperation.Thiswillvarysomewhatfromsensortosensor,withsome
workinglifetimesexceeding fouryears.Thiswearalsochangesthecharacteristicsofthesensor,requiring
regularre-calibration.Itisrecommendedthatthesesensorsbere-calibratedeverythree monthsoras
necessary.
*CAUTION* Replacementsensorelementswhicharenotbiastypesareshippedwithatinyspring
ofwireshortingtheSenseand ReferenceElectrodes.Thisspringmustberemoved
priortoinstallingtheelementtothesensorassembly.
CapillaryDiffusionBarrier
O-RingSeal
SensingElectrode
Refereence Electtrode
Counter Electrode
ElectrolyteReservoir
Figure1-ToxicCell Construction
(SchematicDrawing)

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4.2TwoWireTransmitters
Thestandardtransmitteroutputsignalis4-20mADC.Ifthecurrentdrawrequiredforoperationofthe
transmitterisless than4mADC,thenonlytwowiresareneeded;forpowerandsignal(See figure2).The
connectiontogroundissuppliedbythemonitoring equipment,whichmeasuresthevoltagedevelopedbythe
currentacross aprecisionresistor.Afunctioningtransmitterwill alwaysdrawitsoperatingcurrent,so
therewill alwaysbesomeoutputsignalinafunctioningcircuit.
4.3IntrinsicSafetyvs. ExplosionProofEnclosuresforHazardousLocations
Specialconsiderationsarenecessaryinhazardouslocationsareaswhereflammableorexplosivedustsand/or
gasesmaybepresent.SuchareasaregenerallyclassifiedaseitherClass1(gases)orClass2(dusts)and
Division1(dangerisnormallypresent)orDivision2(dangerispresentunderfailureconditions).An
additionalGroup lettercodespecifiesthegasesordustspresentingthehazard.Electricalequipment
installedintheseareasmustbeprotectedfromgeneratingasparkofsufficientignitiontemperaturethatan
explosionmayoccur.Therearetwoapproachestotheseinstallations.
Thefirstapproachistoinstalltheelectricalequipmentincertifiedexplosion-proofenclosures.When
properlyinstalled,theseheavymetalenclosuresaresealedfromthehazardousconditionandguaranteedto
containanysparkorflamethatmightoccurintheelectronics.Unfortunately,access tothecontents
requiresmeasurestoensurethatthearea isinanon-hazardouscondition.
ThesecondapproachisanIntrinsicallySafe(IS)installation(See Figure3).Inthisapproach,voltagesand
currentsintothehazardousarea arelimitedbyspeciallydesignedISbarriers.Theelectronicequipmentis
designedsothatenergystoragedevices(inductiveorcapacitive)intheelectricaldevicecannotstore
sufficientenergytocauseignitionofthegasestobefoundinthehazardousarea.
Figure2-TwoWireTransmitters

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Forhazardousareas,theQTS-6100 SERIESisavailableinanexplosionproofhousing CSA,FM,andUL
ratedtoClass1Division1GroupsA,B,CandD.Thesensorassemblyattachedtothisenclosureisalso
ratedforGroup A(Acetylene).Theelectronicshavebeendesignedtomeetintrinsicsafetyrequirements
(certificationpending).
Figure3-IntrinsicallySafeInstallation

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5.INSTALLATION
*WARNING* STATICELECTRICITY-Installation,wiring,configuration,orotheractivitymay
requirehandlingordisassemblyofthetransmittercircuitcardassemblies(CCA).
HandlingofaCCA withoutproperprecautionscanexposetheelectroniccomponents
tothepossibledamagefromstaticelectricitydischarge.
TrytoensureyouaregroundedwhenhandlingaCCA.Ifcontinuousgroundingis
notpractical,touchsomemetalitem,whichisknowntobegrounded.Avoid
walkingaround afterthisasyoucanregenerateastaticcharge.Notethatthe
smalleststaticdischarge,whichisnoticeablebyhumans,is3,000Volts.A
noticeable, significantdischargemay beashighas30,000 Volts
5.1Mounting
TheQTS-6100Sensor/Transmittershouldbemountedwherethegastobemeasuredismostlikelytobe
present.Thislocationwillbedependentonthesource ofthetargetgasandwhetherthatgasislighteror
heavierthanair.Aircirculationandmixtureshouldalsobetakenintoaccount.Thefollowingtable
providesrecommendedmountinglocationbasedonthemolecularweightofthegas:
MODEL # GAS SYMBOL MOUNT LOCATION
QTS-61110 HydrogenSulphide H2S Low 9to18”(230 to460 mm)abovefloor
QTS-61115 HydrogenCyanide HCN Mid 48 to72”(1200 to1800 mm)abovefloor
QTS-61120 Chlorine Cl2 Low 9to18”(230 to460 mm)abovefloor
QTS-61123 ChlorineDioxide ClO2 Low 9to18”(230 to460 mm)abovefloor
QTS-61125 HydrogenChloride HCl Mid 48 to72”(1200 to1800 mm)abovefloor
QTS-61140 SulphurDioxide SO2 Low 9to18”(230 to460 mm)abovefloor
QTS-61150 NitrogenDioxide NO2 Low 9to18”(230 to460 mm)abovefloor
QTS-61160 CarbonMonoxide CO Mid 48 to72”(1200 to1800 mm)abovefloor
QTS-61190 NitricOxide NO Mid 48 to72”(1200 to1800 mm)abovefloor
QTS-61211 Hydrogen H2 High 9to18”(230 to460 mm)belowceiling
QTS-61220 Ammonia NH3 High 9to18”(230 to460 mm)belowceiling
QTS-61230 EthyleneOxide C2H4O Low 9to18”(230 to460 mm)abovefloor
QTS-61240 Ozone O3 Mid 48 to72”(1200 to1800 mm)abovefloor
Table1-Sensor/TransmitterMountingLocation
Wherepossible,thesensor/transmittershouldbemountedwhereitisaccessibleforthepurposesofroutine
re-calibrationandperiodicsensorreplacement.Sufficientroomshouldbelefttoallowtheenclosurecover
toberemoved.Onunitswithindustrialexplosion-proofenclosures,sufficientroomshouldbelefttoallow
theconnectionofthecalibrationadaptertothesensorassembly.Forsensorelementreplacementtherewill
needtobeenoughroomtoreachintothesensorassembly.
*CAUTION*Thesensorassembliesontheindustrialexplosion-proofenclosuresaredesignedfor
integralmountingonly.Remotemountingofthesensorassemblyfromthe
transmittermay bepossible,butmay requirespecialwiringconsiderations.Ifyou
mustremotemountthesensorfromthetransmitterpleaseconsultthefactoryfor
recommendations.

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NOTE:Avoidmountingtheelectronicsnear600 VAC switchgearand othersourcesofradio
frequencyand/orelectromagneticinterference.WhileRFI/EMIprotectionisbuilt-
intotheelectronics, excessivelevelsofinterference may causeinstabilityintheoutput
signal.
TherearetwomountingholesinthebackoftheABSplasticenclosuresforsurface mounting.Theseholes
willlineup withstandardelectricaljunctionboxes. Therearetwotabbedmountingholesontheexteriorof
theindustrialexplosion-proofenclosureforsurfacemounting.See theappropriateinstallationdrawingfor
dimensionaldetails.
*WARNING* Whenmountedwheretheunitwill besubjectedtorainorotherwaterenvironments,
all conduitconnectionsmustbeproperlysealedwithductsealorequivalentmaterial.
Failuretodothiscouldresultinwaterinsidetheenclosure, whichwill causea
terminalfailureoftheelectronics.
5.2Wiring
TheQTS-6100SeriesSensor/Transmitterisalow
powerconsumptiontransmitterrequiring onlytwo
wiresforpowerandsignal.Terminalblock
connectionsareprovidedforwiringthatwillaccept
wirefrom14 to24 AWG.See theappropriate
installationdrawingforwiringterminalconnection
details.Thetransmitterelectronicswillworkovera
powerrangeof12 to36VDC.Theresistanceofthe
loadthatthe4to20 mADCoutputcanbedriveninto
isrelativetothevoltageavailableatthetransmitter
(see Figure4).Whencalculatingpowersupply
requirements,all loadsonthetransmitterneedtobe
totaled,including wiring andanyaccessorydevices
suchasintrinsicsafetybarriers.
*CAUTION*GROUNDING-Theindustrial
explosion-proofmetalenclosuremustbeconnectedtoasafetyground,eitherlocally
orbackatthemonitor,inordertoprovideimmunitytoElectromagnetic
Interference.
12 1824 3036
VoltageSupply(VDC)
750
500
250
0
1000
1250
1500
Figure4-MaximumBurdenResistance

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6.CONFIGURATION
NOTE:Ifyouhaveorderedacompletesensor/transmitterassemblyitwill comefromthe
factoryproperlyconfiguredand calibratedforthespecificsensorelementselected.
Thefollowingconfigurationinformationisprovidedforwhenareplacement
transmittermustbeconfiguredoranexistingtransmitterre-configuredtoaccepta
differentsensorelementtype.
Thetransmitterelectronicspackageiscomposedoftwocircuitcardassemblies(CCA)andatopplate(see
Figures6and7).Configurationofthetransmitterfordifferentsensorelementsisperformedwithanumber
ofsolderlessshortinglinkspresentoneachCCA.Theseshortinglinks
configurethetransmitterforbiasing,polarity,battery,shortingFET, and
propergainresistance.Tochangetheconfigurationremovethesmall
plasticshortinglink thatispluggedovertheshorting pinsandreplaceas
requiredintables2and3below.
FET
Gain Polarity
LowMedHigh
Gas Code SensorPartNo. JP11 JP12 JP4 JP5 JP6 JP9 JP10
H2S 110 6300-0006
|: |: : |:
HCN 115 6300-0013
|: : : | |:
Cl2 120 6300-0016
|: : |: : |
ClO2 123 6300-0016
|: : |: : |
HCl 125 6300-0017
: | : |: |:
SO2 140 6300-0018
|: : |: |:
NO2 150 6300-0028
|: |: : : |
CO 160 6300-0003
|: |: : |:
NO 190 6300-0012
: | |: : |:
H2 211 6300-0011
|: |: : |:
NH3 220 6300-0007
|: : |: |:
C2H4O 230 6300-0020
: | |: : |:
O3 240 6300-0023
|: |: : : |
Table2-SensorTypeConfiguration
UpperCircuitCardAssembly
|=JumperInstalled
:=NoJumper
Figure5-JumperStyle

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Biasing Battery
GasCode SensorPartNo. JP1 JP2 JP3 JP13 JP14
H2S 110 6300-0006
|: : : |
HCN115 6300-0013
|: : : |
Cl2 120 6300-0016
|: : : |
ClO2123 6300-0016
|: : : |
HCl 125 6300-0017
: : | |:
SO2 140 6300-0018
|: : : |
NO2 150 6300-0028
|: : : |
CO 160 6300-0003
|: : : |
NO 190 6300-0012
: : | |:
H2 211 6300-0011
|: : : |
NH3 220 6300-0007
|: : : |
C2H40 230 6300-0020
: : | |:
O3 240 6300-0023
|: : : |
Table3-SensorTypeConfiguration
LowerCircuitCardAssembly
|=JumperInstalled
:=NoJumper
NOTE:Atransmitterthathasbeenreconfiguredmustalwaysbecalibratedwiththeinstalled
sensor.See Section8fordetailsoncalibrationand replacementofsensorelements.
Figure6-ConfigurationJumpers-RightSide
Locations
Top Plate
UpperCCA
LowerCCA
Power/Wiring
Terminals
Figure7-ConfigurationJumpers-LeftSide
Locations
Biasing:
JP1=None
JP2=Positive
JP3=Negative
Battery:
JP13 =Enabled
JP14 =Disabled

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7.START-UPAND COMMISSIONING
TheQTS-6100 SeriesSensor/Transmittercomesfromthefactorycompletelyconfigured,testedand
calibratedasordered.Verifythemodelnumberiscorrectandfollowtheinstallationinstructionsinthis
manual.Checkall wiring priortoapplyingpowertothetransmitter.Usingadigitalmultimeter
(DVOM),checkpowerattheterminalstoensureanominal24 VDCispresent.ConnecttheDVOMtothe
testjacksontheupperCCAwitharangeselectedthatwilldisplay20 mADC.Thereadingonthetest
jacksistheactualoutputfromthetransmitter.
Itisnotuncommonfortheelectrochemicalsensortoregisteraresponsewhenfirststartedup,eveninclean
air.Ifthesensorwasnotcovered,somegasesmayhaveenteredthecellandnotbeenclearedbythe
unpoweredunit.Generallythesensorwill befullywarmedup andclearofanygaseswithinonehourof
powerbeingapplied.Underextremeconditionsthisperiodmaybeaslongas24 hours.Theexceptionto
thisistheammonia(NH3)sensor.Thissensorwilltakebetweenthree andfivedaystobefullywarmedup
andprovideastableoutput.Calibrationofanytransmittershouldnotbeperformeduntil thesensorisfully
warmedup andstable.
8.ROUTINEMAINTENANCE
8.1Calibration
RecommendedcalibrationoftheQTS-6100 SeriesSensor/Transmitterisevery90 days,orasnecessary.
Theusershouldtakeintoaccountactualinstallationenvironmentandthepossibilitiesforfailureduetowater
orcorrosiveatmospheres.Theseriousnessofafailuretoalarmorthelackofprecisioninthatlocation
shouldalsobeconsideredandcalibrationperiodsadjustedaccordingly.
8.1.1EQUIPMENT REQUIRED
• DigitalMultimeter; Accurateto0.1mAmaximum.
• Screwdriver; Small, foradjustingtrim potentiometers.
• ZeroCalibrationGas; 20.9%Oxygen, balance Nitrogen, orsomeothersource ofcleanair.
• SpanCalibrationGas; Shouldbeasclosetothespanconcentrationaspossibleandnoless than50%of
thespanconcentration.
• FlowRegulator; Forcalibrationgases;shouldregulatethegasflowintherange200 to
1000 ml/min.
• CalibrationAdapter; AssuppliedbyQEL
• Tubing; Toconnectfromtheregulatortothecalibrationadapter
*CAUTION* Sometargetgases,suchasChlorine(Cl2)andHydrogenSulphide(H2S)may be
absorbedbystandardplastictubing.Thisabsorptionwill altertheconcentration
ofthecalibrationgasactuallyreachingthesensorelementand therefore cause
erroneouscalibration.TeflontubingshouldbeusedforCL2andH
2
Sgas
calibrations.

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8.1.2PROCEDURE
8.1.2.1Set-Up
TwosmalljacksareontheupperCCAofthetransmitter,accessiblethroughholesonthecoverplate(see
figure8).Thesejackswillacceptstandardtestleadsfrommosthandheldmultimeters.Setthedigital
multimeteronaDCmilliamprangetoreadupto20mADCandconnectthetestleadstothetestjacks.
Thecircuitisdiodeprotected,soastoallowmeasurementwithoutinterruptionofthetransmitteroutput.
Connectthetubingbetweentheflowregulatorandthecalibrationadapter.
NOTE:Adjustmentstothezeropotentiometerwilleffectthespanadjustment.Adjustments
tothespanpotentiometerwillhaveanegligibleeffectonthezeroadjustmentunless
theyaremajor.Idealcalibrationwillbeobtainedbyrepeatingthefollowingzero
and spanadjustmentstwice.
TestJacks
Figure8-CalibrationAdjustments
8.1.2.2ZeroAdjustment
A)Connecttheflowregulatortothezerocalibrationgascylinder(orothercleanairsource).
B)Connectthecalibrationadaptertoa)thesensorassemblycoveriftheindustrialexplosion-proof
enclosureorb)thesensoropeningonthefrontcoveriftheABSplasticenclosure.
C)Applyzerocalibrationgaswhilemonitoringtheoutputofthesensor.Allowoutputtostabilize.
D)Adjustthezeropotentiometeruntil thesignalis4.00 mADC, ±0.05 mA.
E)Turnoff thezerogasandremovefromtheflowregulator.

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8.1.2.3SpanAdjustment
A)Connecttheflowregulatortothespangascylinder(orotherspangassource).
B)Applyspancalibrationgaswhilemonitoringtheoutputofthesensor.Allowoutputtostabilize.
C)Adjustthespanpotentiometeruntil themeterreadstheappropriatecurrent ±1.5%.
D)Turnoff thespangasandremovefromtheflowregulator.
NOTE:TodeterminetheappropriateoutputinmADC foragivenconcentrationof
calibrationgas, ortoconvertcurrentmADC readingstoaspecificgasconcentration;
usethefollowingcalculations:
8.2SensorElementReplacement
Astheelectrochemicalsensorages,oxidationwearsawaythemeasuringelectrodes.Thisreducesthe
outputofthesensor,requiring regularre-calibration.Eventuallyitwillnotbepossibletoadjustthespan
potentiometerenoughtobringthetransmitteroutputtothecorrectlevel.Whenthishappensthesensor
elementmustbereplaced.
Thesensorelementisasmall,plug-incellwithfourpinsonthebottom.Thecell isshippedfromthe
factoryinasealedplasticcylindricalcontainer.Thesealedcontainerpreventscontaminationofthecell by
gases, dirt, andotherforeignmatterpriortoinstallation.
NOTE:Whereverpossible,donotremovethesensorfromthesealedcontaineruntilyouare
readytoinstall it.Thiswill maximizethelifeofthecell and minimizethewarmup
time.
Whenyoufirstremovethesensorfromthecontainer,ashortingwirewillbeacross theconnectionpins.
Thiswirepreventsdegradationofelectrodesduringstorage.Whenproperlyinstalled,thetransmitter
supportsthisfunctionwhetherpoweredorunpowered.
*CAUTION* Before installingthesensorelement,anyshortingwiresattachedtothepinsmustbe
removed.Thesensorwill notoperatewiththeseshortingwiresconnected.
Newlyinstalledsensorelementsshouldbeleftpoweredforatleast24 hoursbeforecalibration.Ammonia
(NH3)cellsshouldbeleftforatleastthree days,preferablyfivedaysbeforecalibration.Thiswillallowthe
sensortoburnoffanygasesthatmayhavediffusedintothecell beforeinstallationandtofullywarm-up and
stabilize.
Concentration (ppm)
Span(ppm)
x16
+4
Output(mA)=
(Output(mA)-4)
16
xSpan(ppm)
Concentration (ppm)=

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8.2.1INDUSTRIAL EXPLOSION-PROOF ENCLOSURES
A)Removecapandscreenfromsensorassembly.
B)Removeoldsensorelement, includingO-ringseal.
C)Install newsensorelement, includingO-ringseal.Takecaretoalignthepinstothesocket.
D)Replace capandscreenonsensorassembly.
8.2.2ABSPLASTIC COMMERCIALAND NEMA4XENCLOSURES
A)Removefourmountingscrewslocatedoneateachcornerofthefrontcover.
B)Securingthetransmitterassemblyfromfalling, removethethree transmittermountingscrewsfromthe
frontcover.Transmitter, sensorelement, andgroundingringwill all comefree.
C)Removeoldsensorelementfromtransmitterpinsockets.
D)Install newsensorelementintotransmitterpinsockets.Takecaretoalignthepinstothesocket.
E)RemoveO-ringfromnewsensorelement.
F)Re-install sensor/transmitteragainstgroundingringontheinsidefrontcover.Securewiththree
mountingscrewsthroughthefrontcover.
G)Securefrontcoverwithfourcoverscrews, oneoneachcorner.
Figure10 -SensorElementInstallation
ABSPlasticCommercialorNEMA4XEnclosures
Figure9-SensorElementInstallation

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9.FIELDTROUBLE SHOOTING
9.1SensorLife
Theresponsetogasofelectrochemicalsensorswillreduce withtimeduetooxidationontheelectrodes.
Therateofreductionisdependentuponsuchfactorsasambienttemperature,humidity,andexposuretogas.
Inordertocompensateforthis,thegainofthetransmittercanbeincreasedwhentheunitiscalibratedinthe
fieldbyadjustingthegain(span)potentiometer.Ifthepotentiometeradjustmentisinsufficient,thegain
jumpermaybemovedtoonehighergainposition, i.e. JP4toJP5, orJP5toJP6.
*CAUTION* Thegainjumpershouldnotbemovedbymorethanoneposition,i.e.,DONOTmove
JP4toJP6,asthiscouldincreasethegaintoo muchcausingtheamplificationof
sensornoise, resultinginunacceptablejitteronthe4-20 mAoutput.
Ifthespansignalcannotbeachievedbyadjusting thegain,ortheincreaseingainresultsinunacceptable
jitterontheoutput, thenthesensormustbereplaced.
9.2TransmitterElectronics
*WARNING* STATICELECTRICITY-Installation,wiring,configuration,orotheractivitymay
requirehandlingordisassemblyofthetransmittercircuitcardassemblies(CCA).
HandlingofaCCA withoutproperprecautionscanexposetheelectroniccomponents
tothepossibledamagefromstaticelectricitydischarge.
TrytoensureyouaregroundedwhenhandlingaCCA.Ifcontinuousgroundingis
notpractical,touchsomemetalitem,whichisknowntobegrounded.Avoid
walkingaround afterthisasyoucanregenerateastaticcharge.Notethatthe
smalleststaticdischarge,whichisnoticeablebyhumans,is3,000Volts.A
noticeable, significantdischargemay beashighas30,000 Volts
ThetwoCCAsarethelowestleveloffieldreplaceableassembly.Theseassembliesmustbereplacedwith
thepowerremovedfromthetransmitter.See Figure11 foranexplodedviewofthetransmitterCCAsand
associatedhardware, andfordetailsonthedisassemblyandreassemblyprocedures.
Theonlylifelimitedcomponentinthetransmitterelectronicsisalithiumbattery.Thisbatteryisusedto
provideabiasvoltagetocertaintypesofelectrochemicalsensorsonlywhenthetransmitterisunpowered.
Intheunpoweredconditionthelithiumbatterywillhavealifetimeofatleastsixmonths.Inthepowered
conditionthelifetimeisexpectedtobeatleasttenyears.
ThelithiumbatteryissolderedintothelowerCCA,andthereforeifitisnecessarytoreplace itinthefield
theLowerCCAmustbereplaced.