Siargo CS3001 Series User manual

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CS3001 series
Fluidic Concentration Meters
User Manual VA.0
@ 2021 Siargo Ltd.
www.Siargo.com

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www.Siargo.com
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CS3001

UserManual
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
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Fluidic Concentration Meters
withthermaltime‐of‐flighttechnology
CS3001Series
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User Manual
DocumentNo. 05‐2021‐CS1EN
Issuedate:  2021.05
Revision:  VA.0
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SiargoLtd.
3100DeLaCruzBoulevard,Suite210
SantaClara,CA95054
USA
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Tel:+1(408)969.0368
Email:[email protected]
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©Copyright2021andLiabilityDisclaimer
SiargoLtd.anditssubsidiariesreservetherighttochangethespecificationsand/ordescriptions
withoutpriornotice.Siargoanditssubsidiariesshallnotassumeanyinaccuracyorerrorsinthis
manual.Forfurtherinformationandupdates,pleasevisitwww.Siargo.com.
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www.Siargo.com
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CS3001
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UserManual
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Attention!
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 Usewithcaution!
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Pleasecarefullyreadthismanualpriortooperatingthisproduct.
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Donotopenormodifyanyhardwarewhichmayleadtoirrecoverable
damage.
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Donotusethisproductifyoususpectanymalfunctionsordefection.
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Donotusethisproductforcorrosivemediaorinastrongvibration
environment.
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Usethisproductaccordingtothespecifiedparameters.
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Onlythetrainedorqualifiedpersonnelshallbeallowedtoperform
productservices.
Becautiousforelectricalsafety,andevenitoperatesatalowvoltage,
anyelectricalshockmightleadtosomeunexpecteddamages.
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Theliquidtobemeasuredshouldbecleanandfreeofparticles,as
evenlightparticlesmaybeaccumulatedinsidetheflowchannel
thatmayresultininaccuracyinmetrology,clogging,orother
irrecoverabledamage.
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Donotapplyforanyunknownornon‐specifiedliquidsthatmay
damagetheproduct.
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Becautiousforthebubblesorcavitationinsidethefluid,visibleorinvisible,
thatmayleadtoinaccuracyorerroneousoutputs.

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www.Siargo.com

CS3001

UserManual


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TableofContents
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1.Overview......................................................................................................................................................5
2.Receipt/unpackoftheproducts...............................................................................................................6
3.Knowingtheproducts.................................................................................................................................7
3.1Productdescription.............................................................................................................................7 
3.2Poweranddatacabledescription......................................................................................................7
3.3Mechanicaldimensions.............................................................................................................................8 
4.Installation.......................................................................................................................................................8
5.Basicoperation................................................................................................................................................9
5.1.Checktheproductspecifications...........................................................................................................9
5.2.Checkthemicrofluidicsystem.............................................................................................................10
5.3.Checktheleakage.................................................................................................................................10
5.4.Connectthepowersupply....................................................................................................................10
5.5.Analoginterface/measurement...........................................................................................................11
5.6.Digitalinterface/measurement............................................................................................................11
5.6.1.Hardwareconnection.........................................................................................................................12
5.6.2.Communicationparameters..............................................................................................................12
5.6.3.Frame...................................................................................................................................................13
5.6.4.Functioncodes....................................................................................................................................13
5.6.5.Registers..............................................................................................................................................13
6.Productselectionandorderinformation....................................................................................................17
6.1.Productselection...................................................................................................................................17
6.2.Ordercontactandcustomersupport..................................................................................................17
7.Technicalspecifications................................................................................................................................18
8.Technicalnotesfortheproductperformance............................................................................................19
8.1.Measurementprinciple..........................................................................................................................19
8.2.Precautionsforthebestperformanceoftheproduct.......................................................................19
8.2.1.Particlecontamination...................................................................................................................19
8.2.2.Bubblesorcavitation......................................................................................................................19
8.2.3.Pressurizedflowdelivery...............................................................................................................20

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www.Siargo.com

CS3001

UserManual
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
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8.2.4.Continuousoperation.....................................................................................................................20
8.2.5.Measurementofnon‐conventionalfluid.....................................................................................20
8.2.6.Productcalibration.........................................................................................................................20
8.2.7.Usethemeterfordensitymeasurement......................................................................................21
8.2.8.Temperaturesensitivityoftheconcentrationmeasurement....................................................21
9.Troubleshooting............................................................................................................................................22
10.WarrantyandLiability................................................................................................................................23
11.Servicecontactandinformation................................................................................................................25
AppendixI:Productevaluationkit.................................................................................................................26
AppendixII:Documenthistory........................................................................................................................27
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www.Siargo.com

CS3001

UserManual
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
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1. Overview
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Allcontactinformationcanbefoundattheendofthismanual.
ThismanualprovidesessentialinformationfortheCS3001seriesofliquidconcentrationmetersfor
fluidic,inparticular,microfluidicconcentrationmeteringapplications.Itisappliedtothe
concentrationmeteringofafluidmixedwithtwodifferentfluids.Theproductperformance,
maintenance,andtroubleshooting,aswellastheinformationforproductorder,technicalsupport,
andrepair,arealsoincluded.
TheCS3001fluidicconcentrationmetersaremanufacturedwiththecompany’sproprietaryMEMS
(micro‐electro‐mechanicalsystems)thermaltime‐of‐flighttechnologythatoffersveryhigh
precisioninthe0~100%wtfulldynamicrange.Inaddition,thechannel'swettedmaterialsare
tailoredby304stainlesssteel,Polyphenylsulfone,andsiliconnitrideonly,whichallowsexcellent
chemicalandbio‐compatibility.
Thethermaltime‐of‐flightsensingisachievedbymodulatingathermaltransmitterandacquiring
thereceiver'smodulatedsignalsataprecisedistanceviathemicro‐machinedprocess.The
predefinedspecificdistance,togetherwiththemeasuredtimethatthethermalsignalstravel
betweenthetransmitterandreceiver,allowstheaccuratemeasurementofthethermaldiffusivity
fortheinterestedfluid,whichisdirectlyassociatedwiththeconcentrationofafluid.
TheproductsarepackagedsuchthattheMEMSsensorchipisatarecessinsidethechannel,
eliminatingthefluidfloweffects,andallowingapressureratingto1.oMPaforbroaderpressure‐
ratedapplications.
Whilethecurrentpackagesarebestforinstrumentation,equipment,OEM,and/orlaboratory
applications,themanufactureralsooffersalternativecustomizedpackages,includingthosefor
disposableformality.Somemedicalorcross‐contaminationsensitiveapplicationswouldhavea
disposableapproachastheonlypracticalpath.Foranyotherformsofpackagesthatarenot
describedinthismanual,pleasecontactthemanufacturer.
ThedefaultdatainterfacesincludeI2C,RS485Modbus,analogwithoptionalwirelessdata.Other
optionsincludeIO‐Link,4~20mA,etc.Thisvarietyofcommunicationoptionscovermostofthe
currentandnear‐futureapplicationrequirements,andeachormultiplecanberequesteduponorder
fromthemanufacturer.
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www.Siargo.com

CS3001

UserManual


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2. Receipt/unpackoftheproducts
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Uponreceiptoftheproducts,pleasecheckthepackingboxbeforethedismantlementofthepacking
materials.Ensurenodamagesduringshipping.Ifanyabnormalityisobserved,pleasecontactand
notifythecarrierwhoshippedtheproductandinformthedistributorsorsalesrepresentativesifthe
orderisnotplaceddirectlywiththemanufacturer;otherwise,themanufacturershouldbenotified
Foranyfurtheractions,pleaserefertothereturnandrepairsectioninthismanual.
Ifthepackingboxisintact,proceedtoopenthepackingbox,andyoushallfindtheproduct,together
withthepoweranddatacableasshownbelow.
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






TheproductPoweranddatacable,1.0m(3.28’)


Pleasecheckimmediatelytheintegrityoftheproductandthepower/datacable;ifanyabnormality
isidentified,pleasenotifythedistributor/salesrepresentativeormanufacturerassoonasyoucan.If
anydefectsareconfirmed,anexchangeshallbearrangedimmediatelyviatheoriginalsaleschannel.
Thisusermanualshallalsobeincludedinthepackingboxorviaanonlinerequestforanelectronic
version.Inmostcases,thismanualshallbemadeavailabletothecustomerbeforetheactualorder.
Important:Thebasicspecificationsoftheproductarewritteninthe2Dcodeatthebackofthe
product.Useasmartphonetoreadtheinformationandverifyyourorderbeforefurtherprocess.
Ifthereareanyquestionsordoubts,pleasecontactthemanufactureroryoursalesagent.




www.Siargo.com

CS3001

UserManual


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3. Knowingtheproducts

3.1 Productdescription



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3.2 Poweranddatacabledescription

Table3.2:CS3001pinassignment.



Figure3.2.Cableandalignmentsketch.



 
Pin Color Definition
1YellowGND
2GreenRS485A
3RedVCC,powersupply(8~15Vdc)
4WhiteRS485B
5BlackVout(0.5~4.5Vdc)
Installation
thread,2xM3
Meter
enclosure
Measurement
channel
Poweranddata
interface,M5
Product
information
Digital
interface
pinout


www.Siargo.com

CS3001

UserManual


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3.3Mechanicaldimensions
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Figure3.3.1.CS3001mechanicaldimensions


4.Installation

Donotopenoralteranypartoftheproduct,whichwouldleadtomalfunctionandirrecoverable
damage.
Toensurethebestperformanceoftheproducts,theproductsshouldbeinstalledatabasethat
eliminatesenvironmentalvibrationasmuchaspossible.Therearetwopre‐threadedM3portsatthe
bottomoftheproduct,asdescribedinSection3.1.Aflatmetalplateissuggestedtobeusedasthe
holderbeforebeingfixedontoasolidbase.
Theproductispreferabletobeinstalledhorizontally.However,iftheverticalinstallationisnecessary,
thefluidinthetubingmustbefullyfilled,inparticularatthemeasurementposition.


www.Siargo.com

CS3001

UserManual


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Aftertheproductisadequatelyfixedtoa
vibration‐freebase,theflowchannelcanbe
connectedwiththestandard1/8”NPTtube.
Beforeconnection,thetubingshouldbecarefully
checkedforitsintegrityandcleanness.There
mustbenoparticles,dirt,greases,orother
foreignmaterialsinsidethetubing.The
connectorsshouldalsobefreeofanyphysical
damagesandbeincleanconditionwithoutany
visiblecontamination.Aftertheconnection,the
tubingshouldnotbetwisted,anditispreferable
tobekeptstraightorwithfewerturns.Ifanyturns
mustbepresent,eachoftheturnsshouldbesmoothwithoutsharpbending.
Fortheotherconnections,pleasecontactthemanufacturerbeforetheorderforcustomization.The
measurementisnotdirectionaldependent,andanysideofthemetercanbeusedasaninlet.
Itisimportanttomakesuretherearenobubblesinsidethefluidfortheproduct'sbestperformance.
Therefore,itishighlyrecommendedade‐bubblershouldbeinstalledinthetestingloop.
TheproposedinstallationschematicsareshowninFigure4.

5.Basicoperation

5.1.Checktheproductspecifications

Beforestartingtousethisproduct,checktheproductspecificationsfoundinthismanual,Section7,
orthebasicinformationlocatedonthebackpaneloftheproduct.
TheproductinformationfromthismanualisbasedonthemodeldefinedinSection6.Useany
opticalscannersuchasthosewithasmartmobiledevicetoreadthe2Dcodeonthelabelforthe
basicproductspecifications.Inparticular,thepressureratingmustnotbehigherthanthesystem
pressureofthefluidtobemeasured.Insomecases,theproductmaybecalibratedforspecificranged
liquidconcentrationsforaparticularapplication.Thefluidtobemeasuredmustalsobeconsistent
withthatspecifiedbytheproduct.Beparticularlycautiousaboutthesuppliedvoltageindicatedin
thespecification.Ahighervoltagemayleadtoirrecoverabledamage,andalowervoltagewillnot
powertheproductforanydesiredfunctions.

Figure4.Suggestedinstallation


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
CS3001

UserManual


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5.2.Checkthemicrofluidicsystem

Fortheproduct'sbestperformance,itisadvisedthatthefluidtobemeasuredmustbecleanandfree
ofparticlesorotherforeignmaterials.Anupstreamfilterof2μmporesizewouldbeanexamplefor
safeusageoftheproductfromparticlecontamination.Beforereleasingthefluidtopassthroughthe
product,recheckthetubingtoavoidanytwistorsharpbending.Makesureallfittingsaretightly
engaged.

5.3.Checktheleakage

Checkleakagebeforeanymeasurement.Ifitisneeded,thepressurizednitrogenoraircanbeused
fortheleakagecheck,inparticular,ifthefluidisnon‐conventional.

5.4.Connectthepowersupply

AlthoughthisproductcomplieswiththeCE‐requiredEMCregulations,italsorequirestheproductto
beusedaccordingtothestandardelectricaldevicepractice.Beforeconnectingtheproductwiththe
externalpower,ensurethestandardelectricaldeviceprecautionssuchasEDS(electrostatic
discharge)andDCvoltageshallbeobserved.Excessiveelectrostaticdischargemaydamagethe
product.Useonlythepoweranddatacableshippedtogetherwiththeproduct.Thecablecomes
withahigh‐qualityconnectoratoneendtobepluggedintotheproduct,andtheotherendiswith
wiresforconnectionswithoptions.Becarefulwithothercablesthatmayleadtomalfunctions.
Plugthemanufacturer‐suppliedcableintothemeter’sfive‐positionM5connectorwiththetriangle
alignmentshowninFigure3.2.Donotforcetheplug,oritmaycreatedamagetotheproduct.
Theotherendofthecablehas5pre‐solderedwireterminalswithdifferentcolors;refertoTable3.2
fortheconnectioninformation.
Takespecialcare,connectONLYthepowertotheREDpowercord/wire,andensurethepower
supplyiswithinthespecified8~15Vdcbeforeswitchingonthepower.Inaddition,thepowersupply
shouldbeproperlygrounded,connectingtheYELLOWwireterminaltothegroundonthepower
supplyorothersafesystemground.
Theproduct'spowerterminalhastheincomingvoltageinternallyfilteredandregulatedtopowerthe
productcircuitry.Theproductoperatesatamaximumcurrentoflessthan25mA,commonly
availableformostpowersupply.
TheterminalVout(BLACKcable)isforanalogdataoutputfrom0.5to4.50Vdc,correspondingto
thespecifiedflowrangefromzerotofull‐scaleconcentrationpercalibration.

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RS485A(GREEN)andRS485B(WHITE)terminalsareusedfortheRS485Half‐plexModbusdata,
whichprovidesthedigitaldatacommunicationandtheremotecontrolsoftheproduct.
Uponswitchingonthepowersupply,themeterwillbereadytouse.Thestatuscanbecheckedwith
theanalogordigitalinterface.

5.5.Analoginterface/measurement

Unlikemosttraditionalthermalsensing‐
basedproducts,thecurrentproductdoes
notrequireawarm‐uptime.Butforthebest
performance,waitforfewsecondsfor
electronicstogetstabled.Theanalogdata
canbeacquiredbyconnectingtheanalog
terminal(BLACKwire).Figure5.5.1shows
thecorrelationoftheanalogreadingwith
theconcentrationvalues.Forexample,
0.500Vdccorrespondstoazero
concentration,and4.50Vdccorrespondsto
100%w.t.(weightpercentage).Forany
givenvoltageoutputx(Vdc),theconcentrationshallbe(0.25x‐0.125)x100%.
Anotheranaloginterfacesuchas4~20mAisalsooptionalandcanberequestedbydirectly
contactingthemanufacturer.

5.6.Digitalinterface/measurement

ThedefaultdigitalinterfaceforthecurrentproductisRS485Modbus.Theotherstandarddigital
interfacessuchasI2CorIO‐Linkarealsoavailablebyrequest.
Foreachofthespecifieddigitalinterfaces,thecorrespondingprotocolandaspecialcableforeach
shallberequired.Pleasecontactthemanufacturefordetailedinformation.
Foreachdigitalinterface,themanufactureralsoprovidesaMicrosoftWindows‐basedevaluationkit
forsimpleoperationandmeasurementtasks.Pleasecontactthemanufacturerfordetailed
information.
ForthedefaultRS485,thedigitalinterfaceisthehalfplexModbus.OnecanconnecttheRS485A
(Greenwire)andRS485B(whitewire)terminalsoftheprovidedcabletothecorrespondingportofan
RS485businterfaceontheuser'selectronics.
Figure5.5.1.Analogoutput.

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Alternatively,onecanorderthespecialcablebythemanufacturerinwhichanRS485toUSBport
converterisintegrated.Therefore,itcanbepluggedintothecomputerforperformingthedesired
tasks.
ThedigitalcommunicationprotocolisbasedonstandardModbusRTUHalf‐plexmode.Amaster
(PCorPLC)cancommunicatewithmultipleslaves(thecurrentproduct)fordataexchangeand
communicationparameterconfiguration.

5.6.1.Hardwareconnection

ThehardwarelayerisTIA/EIA‐485‐A,asillustratedbelow.Inthisconfiguration,theproduct
(CS3001)isaslave.

5.6.2.Communicationparameters

ThePCUARTcommunicationparametersarelistedinthefollowingtable.
ParametersProtocol
RTU

Baudrate(Bitspersecond)

38400bps

Start

bits1

Databits8

Stopbits1
Even/OddparityNone
Bitsperiod104.2µsec
Bytesperiod1.1458msec
Maximumdatalength20
Maximumnodes247


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5.6.3.Frame

TheframefunctionisbasedonthestandardModbusRTUframing:
Start_bitsAddressFunctioncodesDataCRCStop_bits
T1‐T2‐T3‐T48bit8bitN8bit(20≥n≥0)

16bitT1‐T2‐T3‐T4

Start_bits:4periodsbittime,foranewframe.
Address:Theaddresscanbesetfrom1to255exceptfor157(0x9d).0isthebroadcastaddress.
Functioncodes:Definetheproduct(CS3001)'sfunctions/actions(slaves),eitherexecutionorresponse.
Data:Theaddressoftheregister,lengthofdata,andthedatathemselves.
CRC:CRCverificationcode.Thelowbyteisfollowedbythehighbyte.Forexample,a16bit
CRCisdividedintoBYTE_HandBYTE_L.Intheframing,theBYTE_Lwillcomefirst,
thenfollowedbytheBYTE_H.ThelastoneistheSTOPsignal.
Stop_bits:4periodsbittime,forendingthecurrentframe.

5.6.4.Functioncodes

TheModbusfunctioncodesappliedfortheproductarethesub‐classofthestandardModbus
function‐codes.Thesecodesareusedtosetorreadtheregistersoftheproduct:
CodeNameFunctions
0x03ReadregisterReadregister(s)
0x06SetsingleregisterWriteonesingle16‐bitregister
0x10SetmultipleregistersWritemultipleregisters

5.6.5.Registers

Theproduct(CS3001)hasmultipleregistersavailablefortheassignmentofthevariousfunctions.With
thesefunctions,theusercanobtainthedatafromtheproducts,suchasproductaddressandflowratesfrom
theregisters,orsettheproductfunctionsbywritingthecorrespondingparameters.
Thecurrentlyavailableregistersarelistedinthefollowingtable,andtheregistersmaybecustomizedupon
contactthemanufacturer.WhereR:read;W:write‐only;W/R:readandwrite.
Note:Atthetimeofshipping,thewriteprotectionfunctionisenabledexceptforaddressandbaud
rate.Oncetheusercompletestheregistervaluechange,thewriteprotectionwillbeautomatically
enabledonceagaintopreventincidentaldataloss.

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FunctionsDescriptionRegisterModbusreference

Address ProductModbusaddress(R/W)0x008140130(0x0081)
SerialnumberSerialnumberoftheproduct(R)0x0030~0x003540049(0x0030)
ConcentrationFluidconcentration(R)0x004740072(0x0047)
BaudrateCommunicationbaudrate(R/W)0x008240131(0x0082)
K‐factorCalibrationadjustment(R/W)0x008B40140(0x008B)
Filter Digitalfilter(R/W)0x008C40141(0x008C)
UpperlimitalarmUpperconcentrationlimitalarm(R/W)0x00B840185(ox00B8)
LowerlimitalarmLowerconcentrationlimitalarm(R/W)0x00B940186(ox00B9)
OffsetcalibrationOffsetresetorzeropointcalibration(W)0x00F040241(0x00F0)
WriteprotectionWriteprotectionofselectedparameters(W)0x00FF40256(0x00FF)

Thedetailedinformationofeachregisterisdescribedbelow:Y:enabled;N:disabled
Productaddress0x0081WriteY
ReadY
DescriptionModbusaddressoftheproduct
ValuetypeUINT16
NotesValuesfrom1to255exceptfor157(0x9d).0isthebroadcastaddress.
Thedefaultvalueis1.

SN,Serialnumber

0x0030WriteN
ReadY
DescriptionSeriesNumberoftheproduct,SN

ValuetypeUINT8(12bits)
Notes
SN=value(0x0030),value(0x0031),….,value(0x0035);
Receiving12bitsas:2A473741454930323035382A,thecorresponding
SerialNumberis*G7AEI02058*.

Fluid

concentration0x0047WriteN
ReadY
DescriptionFluidconcentration
ValuetypeUINT16
Notes
Concentration=Value(0x0047)/100
e.g.:foraconcentrationof20.34%.w.t.,theuserwillread“2034”from
register0x0047.



Baudrate0x0082WriteY
ReadY
DescriptionCommunicationbaudratewithaPC
ValuetypeUINT16
Notes
0=4800;1=9600;2=19200;3=38400;4=57600;5=115200.Thedefaultvalueis2.

Forexample,whentheuserreads“2”fromregister0x0082,thebaudrateis
19200.


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CS3001

UserManual



15

|
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
K‐factor0x008BWriteY
ReadY
DescriptionTheK‐factorforcalibrationadjustment
ValuetypeUINT

16
Notes
Thedefaultvalueis1000,readfromregister0x008B.
Theproductwilldisablethisfunctionwithwriteprotectiononcethe
meteringvalueisconfirmedwiththeproperK‐factoradjustment.

Filter0x008CWriteY
ReadY
DescriptionThedigitalfilterdepth
ValuetypeUINT16
NotesValuesfrom0to10,thedefaultvalueis8,normallyreadfromregister0x008C.


Alarm:


Theupperlimitofa
concentration
0x00B8
WriteY
ReadY
DescriptionSetalarmvalueforanupperconcentrationlimit
ValuetypeUINT16
NotesAlarmvalues=Value(0x00B8)
Whentheconcentrationisaboveasetvalue,analarmwillbetriggered.

Alarm:


Thelowerlimitofa
concentration
0x00B9
WriteY
ReadY
DescriptionSetalarmvalueforalowerconcentrationlimit

ValuetypeUINT16
NotesAlarmvalues=Value(0x00B9)
Whentheconcentrationisbelowasetvalue,analarmwillbetriggered.

Offsetcalibration0x00F0WriteY
ReadN
DescriptionResetorcalibratetheoffset
ValuetypeUINT16,Fixedvalue0xAA55
Notes
Toresetorcalibratetheoffset,write0xAA55toregister0x0027.
Whenyouexecutethisfunction,makesurethereisNOflowintheflow
channel.




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
CS3001

UserManual



16

|


Writeprotection0x00FFWriteY
ReadN
DescriptionWriteprotectiondisablerforasetvaluetoaspecificregister.
ValuetypeUINT16,Fixedvalue0xAA55
Notes
Thisfunctionisenabledatthetimeofproductshipment.Toenablethewrite
functionofaspecificparameter,suchasK‐factor,filter,theuserneedstosend
0xAA55totheregister0x00FF,andthenthewritefunctionwillbeenabled
(writeprotectionisdisabled).Afterthewriteexecutioniscompleted,the
firmwarewillautomaticallyre‐enablethewriteprotection.

Only

Address

and

Baudrate

willnotbewrite‐protected.







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
CS3001

UserManual
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
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17
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6.Productselectionandorderinformation
6.1.Productselection

Theproductpartnumbercomprisestheproductmodelnumberandsuffixes,indicatingthefull‐
scaleflowrateandtheotherparameters.Refertothefollowingfordetails.

CS3001‐‐‐‐







6.2.Ordercontactandcustomersupport

Thesalesofficesandthesalesdistributors/representativesarelistedattheendofthisdocument.For
smallquantities,theordercanbeplacedeitherthroughtheSiargowebsite:www.siargo.comorthe
salesoffice.Forlargequantities,pleasecontactthesalesoffice,distributors,orsalesrepresentatives.
Siargoismakingeveryefforttoensurethequalityoftheproducts.However,incaseofquestions
and/orproductsupports,pleasecontactthecustomerservicelistedattheendofthedocument.

Medium:E–Ethanol;M–Methanol;X–customized
(pleasecontactthemanufacturer).
Output:V–analog;A–4~20mA;B–RS485
Connection:D–default:1/8”NPT;X‐customized.
Fullscalerange:0~10…100(%w.t.).

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
CS3001
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UserManual



18
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

7.Technicalspecifications

Allspecificationslistedinthefollowingtable,unlessotherwisenoted,applyforcalibrationconditions
at20°Cand101.325kPaabsolutepressurewithde‐ionizedwater.Theproductishorizontally
mountedatcalibration.


ValueUnit

Full‐scaleconcentrationrange0…10…100%.w.t.

Accuracy±1.5%

Repeatability0.5%

Responsetime100msec

Workingtemperature5~60°C

Workingpressure<0.8MPa

Maximumpressure1.0MPa

Powersupply8~15Vdc

Electricalinterface0.5~4.5Vdc/RS485/4~20mA

Cable M5

Mechanicalconnection1/8”NPT‐Forcustomized

WettedmaterialsSiNx,Stainlesssteel304

Ambientconditions25°C,101.325kPa,DIwater‐basedsolutions

Storagetemperature‐10~70°C

Weight300Gram

ProtectionIP67

FluidcompatibilityNon‐corrosive

CEEN61326‐1;‐2;‐3


*Note:IO‐Linkisoptionalfortheelectricalinterface.


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
CS3001

UserManual



19
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

8.Technicalnotesfortheproductperformance

8.1.Measurementprinciple

TheproductsutilizetheCompany’sproprietarymicro‐machined
(MEMS)thermaltime‐of‐flightsensingtechnology.Athermalsignal
generatorwithapluralsetofreceiversispreciselymanufacturedand
separatedatpredefinedmicrometerdistancesonachipsurfacewith
thermalisolation.Whenathermalpulseisgeneratedinafluidic
media,themodulatedthermalsignalwillbetransferredtothenearest
sensingelementviadiffusivity.Thereceiversrecordapreciseperiod
oftheheattransferfromthegeneratortothereceiver.The
predefineddistancesandthemeasuredperiodallowthesensorto
registerthefluid'sprecisediffusivityinthesensingregime.By
calibratingoutanymechanicalalignmentandotherassembly‐related
factors,thefluidconcentrationcanbedetermined.
Thethermaltime‐of‐flightsensingtechnologyisparticularlyeffectiveinmeteringthemicrofluidic
concentrationwithbinaryfluidsthathavesomedistinctthermaldiffusivities.Pleaserefertothe
company'sUSpatentsandotherpublicationsmadeavailabletothepublicforadditionalinformation.

8.2.Precautionsforthebestperformanceoftheproduct

8.2.1.Particlecontamination

Itiscriticaltohavethemeasuredfluidfreeofparticlecontamination.Sincethefluidicmeasurement
channelisrelativelysmall,anyparticle'spresencemaycreateadeformedchannelthatmaycreate
undesiredphenomenasuchascavitation,leadingtolargemeasurementerrors.Inaddition,the
particledepositionmayalsoclogthechannel,creatinginstability,resultinginunpredictable
measurementcircumstances.

8.2.2.Bubblesorcavitation

Asthemeasurementprincipleisviathermaltransportation,thepresenceofthebubblesorcavitation
shallsignificantlyalterthethermalpropertyofthefluid.Inmostcases,thebubbleinclusioninside
thefluidwouldleadtoanegativedeviationofthemeasurement.Therefore,itisrecommendedto
Figure8.1.Measurement

approachillustration.