YEO-KAL 620 Manual de usuario

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Yeo-Kal Electronics Pty Ltd 18/26 Wattle Road, Brookvale NSW Australia

Telephone +61 2 9939 2616 Fax +61 2 9905 1100

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USERMANUAL

Model 620WaterQualityDataLogger

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Version 1.3

Date 1/5/2019

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InformationinthisdocumentisthecopyrightofYEO‐KALElectronicsPtyLtdandissubject

tochangewithoutnotice.Nopartofthisdocumentmaybecopiedorreproducedbyany

meanswithouttheexpresswrittenpermissionofYEO‐KALElectronicsPtyLtd.All

trademarksarethepropertyoftheirrespectivecompanies.

©2014Yeo‐KalElectronicsPtyLtd

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WARNINGS

DEPLOYMENTWARNING:

Alwaysremembertotightenthecaponthetopbeforedeploymentotherwisethemodel620is

notbewatertight!

EXPLOSIONWARNING:

Inaparticularcombinationofcircumstanceswheresaltwatercomesintocontactwithbatteries

anexplosionmayresult.Iftheprobeisdamageandwateringressispossibletheprobeshouldbe

keptdryandreturnedtoYeo‐KalElectronicstoberepaired.

SCREWCAPS:

When/ifdeployingtheprobewiththecabledisconnecteditisimportanttoinstallthescrewcap

onthetopconnector.Tightenfirmlyforo‐ringseal‐overtighteningwillnotimprovethesealand

mayweakenitandmakeithardtounscrew!

Iftheprobeisfittedwithauxiliarysensorsensurethecablefromtheexternalsensorisscrewed

tight.

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Contents

WARNINGS....................................................................................2

AVIATIONWARNING(FORLITHIUMIONBATTERIESONLY):ERROR!BOOKMARKNOTDEFINED.

CHARGINGWARNING:................................ERROR!BOOKMARKNOTDEFINED.

DEPLOYMENTWARNING:.........................................................................2

EXPLOSIONWARNING:.............................................................................2

SCREWCAPS:............................................................................................2

CONTENTS.....................................................................................3

INTRODUCTION.............................................................................6

GENERALDESCRIPTION..................................................................................6

SPECIFICATIONS............................................................................................6

Sensors:................................................................................................7

Temperature.........................................................................................7

Conductivity..........................................................................................7

Salinity..................................................................................................7

DissolvedOxygen..................................................................................7

Turbidity...............................................................................................7

pH.........................................................................................................8

ORP.......................................................................................................8

Depth(optional)...................................................................................8

Auxiliaryinputs.....................................................................................8

Physical.................................................................................................8

DESCRIPTIONOFSENSORS...............................................................................9

TemperatureSensor...........................................................................10

DissolvedOxygenSensor....................................................................10

ConductivitySensor............................................................................10

TurbiditySensor.................................................................................10

PH/ORPSensor...................................................................................11

pH‐Standardnon‐fillable:.................................................................11

pH‐Optionalrefillable:......................................................................11

AuxiliarySensors.................................................................................11

AuxiliarySensorElectricalCharacteristics:.........................................11

AuxiliarySensorwaterproofcap:.......................................................11

MAINTENANCE............................................................................12

D.O.SENSORMAINTENANCE........................................................................12

ChangingtheMembrane....................................................................12

DissolvedOxygenStirrerMaintenance..............................................13

PH/ORPSENSORMAINTENANCE...................................................................13

TURBIDITYSENSORMAINTENANCE.................................................................14

CONDUCTIVITYSENSORMAINTENANCE...........................................................14

BATTERY......................................................................................16

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NICKLEMETALHYDRIDEBATTERIES................................................................16

Howtocharge:.......................................Error!Bookmarknotdefined.

NickelMetalHydridebatterychargerstatusError!Bookmarknotdefined.

LITHIUMIONBATTERIES...............................................................................16

WARNINGS:........................................................................................16

Lithiumionbatteryspecification:...........Error!Bookmarknotdefined.

Description:............................................Error!Bookmarknotdefined.

Gettingtothebatterypack:...............................................................17

Howtocharge:.......................................Error!Bookmarknotdefined.

InstallBattery:....................................................................................17

CONNECTING...............................................................................19

CONNECTINGTOTHEPC...............................................................................19

COMMUNICATIONSPECIFICATION:..................................................................19

COMMUNICATIONSOFTWARE.......................................................................19

CHECKLOGGER:..........................................................................................20

SETLOGGER:..............................................................................................21

Enableisolation:.................................................................................21

Enablecyclicmemory:........................................................................21

Clearmemory:....................................................................................21

ArmLoggerbutton:............................................................................21

Disarmbutton:...................................................................................21

DOWNLOADDATA:.....................................................................................22

DownloadDatabutton:......................................................................22

Cancelbutton:....................................................................................22

REALTIME:................................................................................................23

Startbutton:.......................................................................................23

Stopbutton:.......................................................................................23

OutputRawData:...............................................................................23

EnableIsolation:.................................................................................23

CALIBRATION:.............................................................................................24

Parameterbutton:..............................................................................24

CalibrateLow/HighPoint:.................................................................24

Showlastdig:......................................................................................24

Hold:...................................................................................................24

CalibrateandSave:.............................................................................24

Cancel:................................................................................................24

Recalculate:........................................................................................24

SendCalibrationtoprobe:..................................................................24

ClearCalConst:...................................................................................25

ReloadCalConstants:.........................................................................25

StopProbe:.........................................................................................25

StartProbe:........................................................................................25

UploadCalConst:...............................................................................25

SaveCalConst:...................................................................................25

CALIBRATIONOVERVIEW..............................................................................25

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TemperatureCalibration....................................................................25

Salinity/HighConductivityRange(ms/cm)Calibration.......................26

LowConductivityRange(us/cm)Calibration......................................26

DissolvedOxygencalibration..............................................................27

pHCalibration.....................................................................................27

ORPCalibration..................................................................................27

TurbidityCalibration...........................................................................28

Depthcalibration................................................................................28

AuxiliaryChannelCalibration.............................................................28

LOGGERSETTINGS.......................................................................................29

Updateclockwhenarming:................................................................29

Realtimesamplerate:........................................................................29

Downloaddatainprocessed:.............................................................29

Lowbatteryshutoff:..........................................................................29

Batteryvoltagecalibration:................................................................29

Warmuptime:...................................................................................29

SensorCount:.....................................................................................29

SetAltitude:........................................................................................29

ADVANCEDSETTINGS:..................................................................................30

Edit>Commsportsetting:.................................................................30

Edit>WindowsDeviceManager:.......................................................30

Edit>ChannelDisplay/Precision/Chart:.............................................31

STORAGE.....................................................................................32

APPENDIX1‐CONVERSIONSUSED..............................................33

APPENDIX2‐COMPLIANCE.........................................................34

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Introduction

Themodel620comesalreadyassembled.Theonlyassemblyisconnectingtheloggertothebattery

chargerortothePCbycablesupplied.

GeneralDescription

Themodel620isafullysubmersiblewaterqualitydataloggerdesignedforunattended

deployment.Theunitisanidealtoolforlongtermdeploymentwhereaccuracyandreliabilityare

required‐canbeusedinawidevarietyofapplicationincludingwaterways,boreholes,sea,dams

andponds.ThemachinedPVCandstainlesssteelassemblymakesthisdataloggertoughand

durable.

Theinstrumentconsistsofamulti‐sensorprobewhichhasinternalmemoryandbatteriessoitcan

bothstoredataandoutputinrealtime.Communicationtoandfromtheprobeisinhalfduplex

serialwheredataistransferredtothePCusingserialcommunicationsgivingreliable,interference

freemeasurementsandalsocommandsaresenttotheloggerusingthesameinterface.Commands

sentanddatareceivedarehandledbytheaccompanyingPCWindows®software.Thecalibration

routineisalsohandledwiththesoftware.

Themodel620comeswithstoragecontainertoprotectthesensorswhiletheinstrumentisin

storage.

Specifications

Memory: Nonvolatilememoryforfullcapacityof20800samples.

ADCbits: 18bit

SampleRate: Loggingfrom1per10seconds

 Realtime:8sensors‐1persecondor12sensors1per2seconds(approximate

times)

Communications: Baudrate9600,8databits,Noparity,1stopbits(8‐N‐1)(baudof4800

 availableinsettings)

Power: Nickelmetalhydridepackwith4500mAHor

 Lithiumionbatterypackwithcapacityof3520mAH

Material: MachinedgreyPVCandstainlesssteel

Dimensions: 511mmX68mmdiameter.Suspensionbracketmakesdiameter82mm.

Weight: 2kg

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Sensors:

Temperature

Range: ‐2–50oC

Accuracy: ±0.05oC

Resolution: 0.01oC(0.001oCpossiblethroughsettings)

Type: pt100platinumelement

Conductivity

HighRange: 0‐80ms/cm(noteuselowrangeforlowvalues)

Accuracy: ±0.05ms/cm

Resolution: 0.02ms/cm

LowRange: 0‐8000us/cm

Accuracy: ±5us/cm

Resolution: 1us/cm

Type: Fourelectrodecell

Salinity

Range: 0‐60ppt

Accuracy: ±0.05ppt

Resolution: 0.02ppt

Type: SeeAppendix1‐ConversionsUsed

DissolvedOxygen

Range: 0‐200%saturation

 0‐20mg/l

Accuracy: ±0.5%

Resolution: 0.1%

Type: ActivesilverandleadelectrodesensorwithPTFE*membraneandbuilt‐in

stirrer

Turbidity

Range: 0‐600ntu

Accuracy: ±0.5ntu(0‐300nturange)

 ±5ntu(300‐600nturange)

Resolution: 0.3ntu

Type: Nephelometricmeasurementfroma90°sensorwithpulsedinfra‐redlight

source

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pH

Range: 0‐14

Accuracy: ±0.03

Resolution: 0.01

Type: Combinationsilver/silverchloridetypewithsinteredTeflon*junction

ORP

Range: ‐700mVto+1100mV

Accuracy: ±10mV

Resolution: 1mV

Type: CombinationbaremetalelectrodecommonreferencejunctionwithpH

electrode(seeAppendix1‐ConversionsUsed)

Depth(optional)

Range: 0‐100mor

 0‐150m

Accuracy: ±0.5%offullscale

Resolution: 0.1m

Type: Dualactivesiliconestraingauge

Auxiliaryinputs

Input: 4X0‐5voltseachinput

Physical

Cablelength: 5m.Otherlengthsmadetoorder.

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DescriptionofSensors

Theprobeassemblyconsistsofthepivotingsuspensionbracket,cableconnector,probebody,top

sensorhousing,slidingsensorguardandbottomsensorhousing.Thebodyoftheprobeismadeof

PVCwithaPVCsensorguard.

Thesensorscaneasilybeaccessedbyslidingthesensorguardupandrotatingthebottomsection

oftheprobe.

Theconductivityanddissolvedoxygensensorscanberemovedforservicing.However,thewhole

unitmustbethoroughlydrybeforethesesensorsareremovedtostrictlyavoidgettingmoisterin

thesockets.Acottonbudorpapertowelcanbeusedtodrythespacesinbetweenthesensors.





Expandedviewofsensorswithdissolvedoxygensensordetached.



TemperatureSensor

Thetemperaturesensorconsistsofapt100platinumelement,housedinastainlesssteelsheath

forrobustnessandcorrosionresistance.Thetemperaturesensorrequireslittlemaintenance,

howeverthetemperaturemeasurementisusedforcalculatingthedissolvedoxygeninmg/landfor

temperaturecorrectionoftheconductivitysensor,soitisimportantthatthetemperaturesensoris

properlycalibrated.

DissolvedOxygenSensor

DissolvedOxygenismeasuredusinganactivetypemembranecoveredsensor.Thesensoritself

consistsofsilverandleadelectrodesanda25umPTFEmembraneandisfilledwitha1.0M

potassiumhydroxide.Aconstantflowofwaterpassesthesensor,maintainedbyastirrerlocated

onthebottomsectionoftheprobe.

Whenthesilverandleadelectrodesareconnectedthroughtheexternalcircuit,electronspassfrom

theleadelectrodetothesilverelectrode.Whenoxygenispresentatthesurfaceofthesilver

electrode,itreactswithelectronstoproducehydroxylions.

Attheleadelectrodethelossofelectronsproducesleadions.Thelead'selectronscombinewith

hydroxyltoprecipitateleadhydroxideontheleadelectrode.

Therateoftransferenceofelectronsviatheexternalcircuitfromtheleadtosilverelectrodeiethat

isthecurrentflowingintheexternalcircuit,isthemeasureoftherateofcellreactionandthusthe

rateatwhichoxygenreachesthesilverelectrode.Thecurrentflowingintheexternalcircuitis

directlyrelatedtotheoxygenconcentrationinthesamplebeingmeasuredbytheelectrodes.

TheDissolvedOxygensensormayperiodicallyrequireanewmembraneandelectrolyte.Aunique

knurlednutisusedtoholdthesensormembraneinpositionwithoutoverstressingthemembrane.

Thisgiveslongtermstabilityandallowseasyreplacement.Thesensorcanberemovedfromthe

probeforservicing.Areplacementprobeisreadyforuseimmediatelyafterinstallationand

calibration.

ConductivitySensor

Theconductivityismeasuredusinga4electrodebridge.Thefourelectrodesystemusesautomatic

compensationtoovercomeanybuildupofcontaminationontheelectrodes.Theelectrodesare

madefromfineplatinumandarecoatedwithplatinumblacktoenhancethelongtermstabilityand

sensitivityofthesensor.Thecoatingshouldlastforalongperiodoftimeifitisnotmechanically

removed,however,thecoatingcanbereplacedbyreturningthesensortoYEO‐KALElectronicsPty

Ltd.

TurbiditySensor

Theturbiditysensorislocatedintheholewhichrunsthroughthebottomsectionoftheprobeand

islinedwithaglasstube.Turbidityismeasuredbythenephelometricmethodwhichusesalight

sourceandadetectormeasuringthelightscatteredat90degreestotheincidentlightbeam.A

pulsedinfra‐redlightsourceisused.ATurbidityscreenhasalsobeeninstalledwhichhasapertures

toreducebounceofftheglasswallandremoverefractionfromsampleshighdensity(seawater).



Tabla de contenidos

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