Extech Instruments EC170 User manual

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


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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 ° C/ ° 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.)

 
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