Extech Instruments EC170 Manual de usuario

USERGUIDE



SalinityMeter

PenStyleWaterQualityMeter



ModelEC170



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2 EC170-EU-EN V1.1 7/13

Introduction

CongratulationsonyourpurchaseoftheExtechPenStyleWaterQualityinstrument;theModel

EC170measuresSalinityandtemperature.TheinstrumentishousedinanIP65Water‐proof

enclosureforsafety.Thismeterisshippedfullytestedandcalibratedand,withproperuse,will

provideyearsofreliableservice.Pleasevisitourwebsite(www.extech.com)tocheckforthe

latestversionofthisUserGuide,ProductUpdates,andCustomerSupport.



Features

IP65Waterproofhousing

AutomaticRangingandManualRangingcapability

DualDisplaywithATC(automatictemperaturecompensation)

Dataholdforfreezingdisplayedreadings

Lowbatteryindicator

Automaticpower‐offformaximumbatteryefficiency

Switchabletemperatureunitsofmeasure(oC/oF)

Multi‐pointandone‐touchcalibrationfeatures

Pocketsized,poweredbyfour(4)LR44batteries



SuppliedMaterials

EC170meter

Four(4)LR44buttonbatteries

Operationmanual(hardcopy,mini‐disk,andon‐lineavailabilityatwww.extech.com)



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3 EC170-EU-EN V1.1 7/13

BatteryInstallation

Themeterisshippedwiththefour(4)LR44button

batteriesremoved.Theusermustinstallthebatteries

beforethemetercanbeused.Refertoaccompanying

diagram.

1. Unscrewthebatterycompartmentcover(topof

meter)inacounter‐clockwisedirection.Please

donotdiscardtheblackwasher.

2. Installthefour(4)LR44buttonbatteries,

carefullyorientingthebatteriesandobserving

polarity.

3. Replacethebatterycompartmentcover.

4. Pleaseremovethebatterieswhilethemeterisnotinuseforlongperiods.

Neverdisposeofusedbatteriesorrechargeablebatteriesinhouseholdwaste.

Asconsumers,usersarelegallyrequiredtotakeusedbatteriestoappropriate

collectionsites,theretailstorewherethebatterieswerepurchased,orwherever

batteriesaresold.

Disposal:Donotdisposeofthisinstrumentinhouseholdwaste.Theuseris

obligatedtotakeend‐of‐lifedevicestoadesignatedcollectionpointforthedisposal

ofelectricalandelectronicequipment.



OtherBatterySafetyReminders

a. Neverdisposeofbatteriesinafire.Batteriesmayexplodeorleak.

b. Nevermixbatterytypes.Alwaysinstallnewbatteriesofthesametype.



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4 EC170-EU-EN V1.1 7/13

MeterDescription

1. BatteryCompartment

2. Display

3. Keypad

4. Electrode

5. Electrodeprotectivecap





DisplayDescription

1. DataHoldicon

2. Micro‐andmilli‐Siemensunits(unusedinthismeter)

3. Primarymeasurementreading

4. Partsperthousandsalinityunits(ppmpartspermillion

arenotusedinthismeter)

5. Temperaturereading

6. Temperatureunitsofmeasure

7. Batterystrengthindicator

8. Calibrationicon



KeypadDescription

1. PowerON‐OFFandSETbutton

2. DownArrow,DataHold,andCalibrationbutton

3. Uparrowbutton

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5 EC170-EU-EN V1.1 7/13

Operation

GettingStarted

1. Removetheprobe’sprotectivecap(bottomofmeter)bypullingthe

capfirmlydownward,awayfrommeter,untilitsnapsoff(seediagram).

2. Pressthepowerbutton topowerONthemeter.Themeterdisplay

willcyclethroughseveralicons(representingthecurrentconfiguration

ofthemeter)beforesettlingonthemaindisplayasshowninthe

displaydescriptionabove.

3. PressthepowerbuttonmomentarilytopowerOFFthemeter.

4. Thismeterispoweredbyfour(4)LR44buttonsbatteries.IfthemeterwillnotswitchON

pleasecheckthatfreshbatteriesareinstalled.

AutomaticandManualRanging

TherearetworangesavailableRange1(0.00to10.00ppt)andRange2(10.1to70.0ppt).The

meterdefaultstotheAUTORangemodewhereoneofthesetworangesisselected

automaticallytoprovidethebestresolutionandaccuracyforeachgivenmeasurement.

However,MANUALRangemodecanalsobeusedwhererange1andrange2canbeselected

manually.



5. PressandholdtheUParrowbutton,thenumber1(range1)willappearonthelower

rightoftheLCDand‘ran’(range)willappearatthecenteroftheLCD.

6. Releasethebuttonandthemeterwillbeforcedintorange1.

7. PressandholdtheUParrowbuttonagain,thenumber2(range2)willappearonthelower

rightoftheLCDand‘ran’(range)willappearatthecenteroftheLCD.

8. Releasethebuttonandthemeterwillbeforcedintorange2.

9. PressandholdtheUParrowbuttonagain,‘ATo’willappearonthelowerLCDareaindicating

thatthemeterisonceagainintheAUTORangemode.

10. Releasethebuttontoendtherangesettingsessionorreturntostep1torepeatthis

process.



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6 EC170-EU-EN V1.1 7/13

MeasurementPreparations,Notes,andConsiderations

Accuracyisgivenas%full‐scale;thereforeusingthelowestrangewillyieldthebest

accuracy.

Themeter’sdisplaywillindicateE02orE03ifthemeasuredvalueisbelow(E02)orabove

(E03)specifiedlimitsofthemeter.Ifthisoccurs,pleaseselectanotherrangeasdescribedin

theManualRangediscussioninpreviousparagraph.

Thetemperaturecoefficientisfixedandcannotbeadjusted.

Thenormalization(reference)temperatureisfixed(25oC);thenominalvalueiscorrectfor

mostapplications.

Rinsetheprobewithdeionizedordistilledwaterbeforeusetoremoveimpuritiesthatmay

adheretotheelectrode.Whenthemeterhasbeenidleforalongperiod,soaktheelectrode

foratleast30minutesbeforeuse.

Whendippingtheprobeintoasamplesolution,besuretoeliminateairbubblestrappedin

theprobe’sslot.Toremoveairbubbles,givetheprobeagentlestirwhilesubmergedinthe

solution.

Whentakingameasurement,stirtheprobegentlyinthesampletocreateahomogenous

sample.Allowafewsecondstoelapsefortheprobeandthesampletoreachtemperature

equilibrium.Ideally,wait15minutestoachievemaximumaccuracyandbesttemperature

compensation.

Theunitofmeasureiconwillflashonthemeter’sdisplaywhilestabilizationistakingplacein

measurementmode.Whenstabilizationisachieved,themeter’siconwillstopflashing.

PresstheHOLDbuttontofreezeadisplayedreading.Pressagaintoreleasethedisplay.

SalinityMeasurement

1. ReadtheMeasurementPreparationsectionabovebeforecontinuing.

2. Inserttheelectrodeintothesampleensuringthattheelectrodesarecompletelysubmersed.

3. Slowlystirthesolutionwiththeelectrodetoremoveairbubbles.

4. ThemeterusestheAuto‐rangeutilitytofindtheproperrangeandthendisplaysthesalinity

readingatthecenteroftheLCDwiththetemperaturereadingshownonthelowerLCDarea

insmallerdigits.

FinishingaMeasurementSession

Afterameasurementsession:

Rinsetheelectrodeindeionizedordistilledwaterandstoredry.

Affixtheprotectivecapovertheelectrodewhenstoring.

Iftheunitistobeleftun‐unusedforlongperiods,removeandstorethebatteriesseparately.

AutomaticPowerOFF(Sleepmode)

ThemeterwillautomaticallyswitchOFFafter20minutesofinactivity.TodisabletheSleep

Mode:Withtheinstrumentswitchedoff,pressandholdtheSETandHLD/CALbuttons

simultaneouslyuntilthe‘n’iconappearsonthedisplay.Releasethebuttonsandthemeterwill

powerup.ThemeterwillnowstayswitchedONuntiltheusermanuallyswitchesitOFF.The

meterrevertstothe‘SleepModeactive’stateeachtimeitispowereddown.

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7 EC170-EU-EN V1.1 7/13

SetupMode

ParameterP1:TemperatureUnits

1. Fromthenormaloperatingmode,pressandholdtheSETbuttonforatleast2secondsuntil

the‘Px’iconappearsonthebottomoftheLCDdisplay(x=setupparameternumber).

2. UsethearrowbuttonstoscrolltotheP1.0iconifnecessary.

3. PresstheSETbuttonmomentarily,the‘C’or‘F’iconshouldnowbeflashingandthe‘t.ut’

icon(abbreviationfortemperatureunits)willbevisibleabovetheflashingunit.

4. Usethearrowkeystoselectthedesiredunitofmeasure.

5. PresstheSETbuttonmomentarilytoconfirmtheselection.

6. ThedisplayreturnstotheP1.0screen.

7. PresstheuparrowbuttontoscrolltothenextparameterP3.0with‘rSt’displayed(factory

defaultresetmode)andfollowthestepsinthenextsection.

ParameterP3:FactoryDefaultReset

Thisparametercanbeusedtorestoreallsettingstotheirfactorydefaultstate.

1. IfcontinuingfromParameterP1skipdirectlytostep2below.Ifstartingfromthenormal

operatingmode,pressandholdtheSETbuttonforatleast2secondsuntilthe‘Px’icon

appearsonthemeterdisplay(x=setupparameternumber)andthenusethearrowbuttons

toscrolltotheP3icon.The‘rSt’displayiconwillbevisibleabovetheP3icon.

2. AttheP3.0‘rSt’screenpresstheSETbuttonmomentarily;a‘y’oran‘n’willbeflashing.

3. Usethearrowbuttonstoselect‘y’forYESRESETor‘n’forNORESET.

4. PresstheSETbuttonmomentarilytoconfirmthesetting.

5. PressandholdtheSETbuttonforatleast2secondstoreturntothenormaloperationmode

orpresstheuparrowbuttonmomentarilytomovetoParameterP4(seebelow).

ParameterP4:CalibrationReviewforRange1andRange2Concentrations

1. IfcontinuingfromParameterP3skipdirectlytostep2below.Ifstartingfromthenormal

operatingmode,pressandholdtheSETbuttonforatleast2secondsuntilthe‘Px’icon

appearsonthemeterdisplay(x=setupparameternumber)andthencontinuestep2below.

2. UsethearrowbuttonstoscrolltotheP4.0iconifnecessary.The‘CAL’displayiconwillbe

visibleabovetheP4.0icon.

3. PresstheSETbuttonmomentarilytoviewthecurrentRange1CalibrationConcentration.

TheP4.0iconwillchangetoP4.1.Ifdashes(‐‐‐)appearonthedisplaythisindicatesthatthe

meterhasnotbeencalibratedthusfar.

4. PresstheuparrowbuttontomovetotheP4.2display.Thedisplayedvaluenowrepresents

theRange2CalibrationConcentration.Again,ifdashedlinesappear,thenthemeterhasnot

beencalibrateduptothispoint.

5. PressandholdtheSETbuttonforatleast2secondstoreturntotheP4.0‘CAL’screen.

6. UsethearrowkeystoselectanotherparameterorpressandholdtheSETbuttonforatleast

2secondstoreturntothenormaloperationmode.



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8 EC170-EU-EN V1.1 7/13

Calibration

CalibrationPreparationandConsiderations

Theusermustfirstdetermine:

1.Thebestcalibrationschedulefortheapplicationathand.

2.Whatcalibrationstandardtouse.



CalibrationSchedule

Calibrationisnecessaryandshouldbeperformedregularly.

Ifmeasuringinthemid‐rangescalibratethemeteratleastoncepermonthandsoakthe

probedeionizedorfor15minutesbeforeeachuse.

Ifmeasuringinextremetemperatureenvironments,oratthelowendofthemeasurement

range,calibratethemeteratleastonceperweek.



SelectingaCalibrationStandard

Forbestresultsselectacalibrationstandardclosesttotheexpectedsamplevalue.

Alternatively,useacalibrationsolutionvaluethatisapproximately2/3oftheexpectedfull

scalemeasurementrange.Remembernottore‐usecalibrationsolutions;contaminantsinthe

solutionwillaffectthecalibrationandtheaccuracy.



SalinityCalibrationProcedure

1. Inserttheprobeintodeionizedordistilledwaterforapproximately30minutestorinsethe

probe.

2. SelecttheSodiumChloridestandardthatisclosesttotheexpectedmeasurementrange.

3. Filltwoseparateandcleansamplecupswiththestandardizingsolutiontoadepthofat

least3cm(1.2”)each.

4. SwitchthemeterON.

5. Rinsetheprobeinoneofthesamplecupsolutions,gentlystirringtheprobe.Rinsingcould

removecontaminantsthatcouldaffectcalibrationandcausemeasurementerrors.

6. Diptherinsedprobeintotheothersamplecupsolution.Tapormovetheelectrodeinthe

sampletodislodgeairbubbles.Lettheprobestabilizetothesolutiontemperature.

7. PressandholdtheHOLD/CALbutton(approximately2seconds)untilthesalinityvalueand

the‘CAL’iconbeginflashingontheLCD.

8. Usethearrowbuttonstoadjustthedisplayedvaluetomatchthevalueofthestandard

solution.TheSalinityreadingcanbeadjusted±30%fromthedetectedvalue.Values

differingmorethan±30%fromthedetectedvalueindicatesthattheelectrodeneedstobe

cleaned.

9. WhentheCALiconstopsflashing,presstheSETbuttonmomentarilytoconfirmthevalue.

Themeterwillthenreturntothenormalmeasurementmode.

10. NotethatincaseswheretheSalinityreadingisoutsidethe±30%window,themeterdisplay

mayfreezeandnotallowtheusertoreturntothenormaloperatingmode.Inthiscase,

removeoneofthebatteriestoswitchthemeterOFFanddonotusethemeteragainuntil

theelectrodehasbeencleanedorreplaced.

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9 EC170-EU-EN V1.1 7/13

Maintenance

Keepthemeter’smeasurementelectrodeclean.Betweenmeasurements,rinsetheelectrode

withdeionizedordistilledwater.Iftheelectrodehasbeenexposedtoasolventimmisciblein

water,cleanitwithasolventmiscibleinwater,e.g.Ethanol,andthenrinsecarefullywith

water.

Storetheelectrodecarefully.Beforestoring,rinsecarefullyindeionizedordistilledwaterand

storedry.

Troubleshooting

PowerONisattemptedbutthereisnodisplay

BesuretopresstheON‐OFFbuttonforatleast100mStoswitchthemeterON.

Checkthatbatteriesarepositionedcorrectly,makinggoodcontact,andcorrectpolarity.

Replacethebatteriesifnecessary.

Removeandreplacetheexistingbatteries.

DisplayswitchesOFF

ThisisnormalwhenAutoPowerOFFisactivated.

Replacethebatteriesifnecessary.

AirBubblesadheredtoElectrode

Stirtheelectrodecompletelyandbesuretodiptheelectrodeintoasolutionatanoblique

angle.Verticaldippingcancausemanyairbubblestoadhere.

Gentlytapthebottomofthesolutioncontainerwhilestirringtheelectrodeinthesolution.

Aircanbeblownacrosstheelectrodebeforedippingitintothesolution.

ErrorCodes

RefertotheTablebelowfordetailsonErrorCodesdisplayedbythemeter.

CodeDescriptionSuggestions

SALINITYERRORS

‐‐‐‐‐ Measurementoutsideof

range

InManualRangemode,pressandholdtheup

arrowfor2secondstochangerangeorusethe

AutoRangemode

E03Salinityisover‐rangeCheckagainstastandardbuffersolution.If

problempersists,repairmeter

E04TemperatureerrorRepairmeter

TEMPERATUREERRORS

E01Temperaturecircuit

damaged

Repairmeter

E02Temperaturevalueisbelow

allowablerangeor

Temperaturecircuitdamage

Checkagainatroomtemperature.Iferror

persists,repairmeter

E03Temperaturevalueisabove

allowablerangeor

Temperaturecircuitdamage

Checkagainatroomtemperature.Iferror

persists,repairmeter

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10 EC170-EU-EN V1.1 7/13

FactoryDefaultSettings

TypeParameterDefaultNotes

P1.0Select°C/°F°CTemperatureunits

P3.0ReverttoFactoryDefaultsettingsNOSelectYEStoreverttodefault

settings

P4.1‐‐‐‐‐ CalibrationDataforRange1

P4.2

ReviewpreviousCalibrationdata

‐‐‐‐‐ CalibrationDataforRange2



Specifications



MeasurementrangesRange1: 0.00to10.00pptSalinity

  Range2: 10.1to70.0pptSalinity



ppt=partsperthousand

1ppt=1g/L



SalinityAccuracyRange1: 1%FullScale±1digitor2%FullScale

Range2: ±1digit

SalinityResolutionRange1: 0.01ppt

Range2: 0.1ppt



TemperatureAccuracy±0.5

C(0.9

F)

TemperatureResolution0.1

F



TDSFactorBuilt‐inNaClconductivitytoTDSconversionfactor

CalibrationOnepointcalibrationperrange

AutoPowerOFFAfter20minutesofinactivity

DataHoldFreezesdisplayedreading

AutomaticTemperatureCompensation(ATC):0to50

C(32to122

F)

WaterproofIP65rated

TemperatureCoefficientBuilt‐inNaCltemperaturecoefficient

OperatingConditionsTemperature:0to50

C(32to122

F);<80%RH

StorageConditionsTemperature:0to60

C(32to140

F);<90%RH

NormalizationTemperatureFixedat25

C(77

F)

BasicstatusindicatorsOut‐of‐range(‐‐‐‐)andlowbattery

PowerSupplyFour(4)LR44‘button’batteries

DimensionsMeter:165x35x32mm(6.5x1.4x1.3”)

LCD:30x18mm(1.2x0.7”)

Weight115g(4oz.)



Allrightsreservedincludingtherightofreproductioninwholeorinpartinanyform

www.extech.com

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