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7/28/2019 LaMotte 5-0034 pH Meter pH5 Plus Handheld Manual
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pH 5 Meter ManualTheLaMotte5Series
http://www.promagenviro.com/pH-5-Plus-pH-Meterhttp://www.promagenviro.com/pH-5-Plus-pH-Meterhttp://www.promagenviro.com/pH-5-Plus-pH-Meterhttp://www.promagenviro.com/pH-5-Plus-pH-Meterhttp://www.promagenviro.com/pH-5-Plus-pH-Meterhttp://www.promagenviro.com/pH-5-Plus-pH-Meterhttp://www.promagenviro.com/pH-5-Plus-pH-Meterhttp://www.promagenviro.com/pH-5-Plus-pH-Meterhttp://www.promagenviro.com/pH-5-Plus-pH-Meterhttp://www.promagenviro.com/pH-5-Plus-pH-Meter7/28/2019 LaMotte 5-0034 pH Meter pH5 Plus Handheld Manual
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7/28/2019 LaMotte 5-0034 pH Meter pH5 Plus Handheld Manual
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Contents
Chapter PageWhatispH? .....................................................................................................4The pH 5 Meter ...............................................................................................5Display&KeypadFunctions ...........................................................................6MeterSpecifications ........................................................................................7Removing
the
Rubber
Boot
..............................................................................8
MeterSet-up.....................................................................................................9pHCalibration..........................................................................................10,11TemperatureCalibration................................................................................12MeasuringpH..................................................................................................13MeasuringpHofSoil......................................................................................14MeasuringTemperature..................................................................................15Troubleshooting..............................................................................................16Storage ...........................................................................................................17WarrantyInformation..............................................................................................18
WARNING! This set contains chemicalsthat may be harmful if misused. Read
cautions on individual containerscarefully. Not to be used by children
except under adult supervision
pH 5 Meter 3
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What is pH?
pHisoneofthemostcommonanalysesinsoilandwatertesting.Anindicationofthesamplesacidity,pHisactuallyameasurementoftheactivityof
hydrogen
ions
in
the
sample.
pHmeasurementsrunonascalefrom0-14,with7.0consideredneutral.ThosesolutionswithapHbelow7.0areconsideredacids,andthoseabove7.0aredesignatedbases.ThepHscaleislogarithmic,soaoneunitchangeinpHactuallyreflectsaten-foldchangeintheacidity.Forinstance,orangejuice(pH4)istentimesmoreacidicthancottagecheese,whichhasapHof5.ManyindustriesrelyheavilyonpHfortheirprocessestoworkproperly,ortomaintainexpensiveequipment.BreweriesmaintainthepHbetween4.2and4.6tokeepinfectiousbacteriafrombreedingduringthefermentationprocess.Inmanyindustrialapplications,ifthepHistoolowthewatermaycorrodemetalequipment,butifitistoohighscalingmayresult.pHcanbemeasuredvisuallyorelectronically.VisualcomparisonsuseapHindicatorwhosecolorchangereflectsthepH,whichisthenmatchedtoacolorstandard.pHmeters,suchasthepH5,simplifythepHtest.Aprobeisplacedinthesample,andthepHisreaddirectlyfromthemeter.Whilethemeterisveryeasytouse,theelectronicswithinthemeteraremorecomplex.AfterthepHprobemeasuresthemillivoltsofpotentialbetweenthereferenceelectrodeandthepHelectrode,themeterconvertsthisreadingtopHunitsusingtheNernstEquation:
E = Ex + 2.3 RTklog(ai)nF
where Ex=constantdependinguponreferenceelectrodeR=constantT =absolutetemperaturekn=chargeoftheion(includingsign)F=constanta =activityoftheioni
4 pH 5 Meter
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The pH 5 Meter
The pH5meterconsistsofthreemajorcomponents:thepHprobe,thetemperatureprobeandthemeter.ThepHprobeconsistsofaglass,hydrogen-ionselectiveelectrode,andareferenceelectrode,combinedintoasingleunit.Theglasselectrodeisspeciallytreatedtomeasureonlyhydrogenions,whilethereferenceelectrodeissilversurroundedbysilverchloride.Itprovidesazeroorreferencepointforthemeasurement.Thiszeropointmeansanychangeinpotentialmeasuredattheglasselectrodeisattributedtohydrogenions,andthereforeisexpressedaspH.WhenthetemperatureandpHprobesareimmersedinthesample,themetermeasuresthedifferenceinpotentialbetweentheglasselectrodeandthereferenceelectrode.ThiselectronicmeasurementisconvertedfrommillivoltstopHunits,andtheresultappearsonthedisplay.If,forsomereason,thetemperatureprobecannotbeusedduringthepHmeasurement,themeterwillassumeatemperatureof25C.Themeterhasaprotectiverubberboot.
pH 5 Meter 5
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Display and Keypad Functions
indicates indicatesHOLD operationmode pHannunciator
HOLO C1.8.8.8functionisactivated
indicateslowbatterycondition
DegreeCannunciator
Reading
pH
ON/OFF:TurnsthemeteronandoffHOLD/ENTER:Freezesthemeasuredreadingorconfirmsthecalibrationvalue.CAL:AllowscalibrationofthemeterforpHandtemperature.MODE/INC:Selectstheparametertobemeasured:pHortemperature.Adjustsdisplayduringtemperaturecalibration
ONOFF
CAL
MODE
HOLDENTER
6 pH 5 Meter
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Meter Specifications
Range:
Auto Ranging Resolution:
Accuracy:
Calibration:
pH Slope Range:
Auto Buffer Recognition:
Auto Shutoff:
Automatic Temp. Comp:
Operating Temperature:
Keys:
Probe:
Power:
Size:
0.00 to 14.0 pH, 0.0 to 100C
0.01 pH, 0.1C
+/- 0.01 pH, +/-0.5C
up to 3 points, offset 0.1C
80% to 120%
pH 4.01, 7.0, 10.00
after 17 minutes
0.0 to 50C
0 to 50C
ON/OFF, HOLD/ENTER, MODE/INC, CAL
Combination gel-filled epoxy body, Ag/AgCl
4 AAA Alkaline Batteries
5.5 x 2.7 x 1.3 inches (14 x 7 x 3.5 cm)
Accessories
Description Order #
pH Probe 1904
Temperature probe 5-0041
pH Buffer, 4.00, 120 mL 2866-JpH Buffer, 7.00, 120 mL 2881-J
pH Buffer, 10.00, 120 mL 2896-J
Mini Buffer Tablets, pH 4, 50 tablets 3983A-H
Mini Buffer Tablets, pH 7, 50 tablets 3984A-H
Mini Buffer Tablets, pH 10, 50 tablets 3985A-H
Beaker, plastic, mL 0944
Protective rubber boot 5-0040
pH 5 Meter 7
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To Remove the Rubber Boot from the Meter
1.Flipopenthestandbraceonthebackofrubberboot.2.Turnmeterupsidedownonahardsurface.3.Placefingersunderthestandflaponbackofrubberboot,with
thumbsatthetopcornersofthemeterface.4.Pressfingersintowardyou,whilepressingthumbsawayfrom
you,peelingthecornersoftherubberbootfromthemeter.5.Removemeterfromrubberboot.
ON
OFF
CAL
MODE
HOLD
ENTER
HE
To Replace the Rubber Boot:
1.InserttheBNCconnectorintoopeningontherubberbootandinsertmeter.
2.Pulltherubberbootaroundthemeter.8 pH 5 Meter
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pH Calibration
Themeteriscapableofuptoathree-pointcalibration.ThecalibrationmustbeperformedwithpH4.01,7.00and10.00buffers.Itisrecommendedthatat
least
a2-point
calibration
be
performed
at
room
temperature
using
buffers
thatbrackettheexpectedpHofthesample(oneaboveandonebelow).Ifaone-pointcalibrationisperformed,thepHofthebuffermustbeclosetothepHofthesamplethatisbeingmeasured.Ifthetemperatureprobeisnotconnected,themeterwilldefaultto25C.
Allnewcalibrationswillover-rideexistingdata.
3.
1.
PresstheON/OFFkeytoturnthemeteron.Themeterwillenterthe pH mode.
7.0buffersolution
ImmerseboththeelectrodeandtemperatureprobeinpH7.0buffersolution.Theglassbulboftheelectrodemust
be
completelycovered.Stirgently
andwaitformetertostabilize(approximately40seconds).
E T
CAL
MODE
HOLD
ENTER
HOLDENTER
ONOFFONOFF
thatthemeterisinthecalibrationmode.Thedisplaywillthenshowanon-calibratedreadingwhileblinking.
2.
4.distilledH2O
Removetheelectrodefromthesoakerbottle.Rinsetheelectrodeandtemperatureprobewithdistilledwater.
PresstheCALkeytoenterthecalibrationmode.Thedisplaywillmomentarilyflash"CA"toindicate
CA 7.03pH
E T
CAL
MODE
HOLD
ENTER
HOLDENTER
ONOFFONOFF
10 pH 5 Meter
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pH Calibration
CAL HOLDENTER
HOLDENTER
ONOFF
MODEINC
7.RepeatthecalibrationprocedurewithpHbuffers4.01and/or10.00forbestaccuracy.
NOTE:ThemeterhasautomaticbufferrecognitionwhichwillidentifythecorrectpHbuffervaluesduringcalibration.Ifbuffersotherthan4.01,7.00and10.00areused,ortheelectrodeisnotfunctioningproperly,theLCDwillflash"Er1.
Er1
5. 6.Allowthereadingtostabilize(Themeterwillonlyrecognize7.00,4.01and10.00buffers).
PresstheHOLD/ENTERkey once to confirmthecalibration.TheLCDwilldisplay"CO"toconfirmthatthecalibrationpointpointhasbeensaved.Themeterwill
exit
the
calibration
mode
and
returntothemeasurementmode.
pH 5 Meter 11
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Temperature Calibration
Thetemperatureprobeisfactorycalibrated.Overtime,thetemperaturecalibrationmaydriftandrequirerecalibration.Thetemperatureshouldberecalibrated
if
the
temperature
probe
has
been
replaced.
2.1.
PresstheMODE/INCkeyuntil"C"appearsontheLCD.
4.3.PresstheCALkey.TheLCDwillshow"CA"andthedisplaywillflash.
CA C26.5
5.PresstheHOLD/ENTERkeytoconfirmthecalibration.TheLCDwilldisplay"CO"andthemeterwillreverttothemeasurementmode.
Whilegentlystirringthesamplewiththeprobe,Comparethevaluetoa
NISTcertifiedthermometerorotheraccuratethermometer.For
the
best
accuracy,placethethermometer
andtemperatureprobeinaconstanttemperaturebath.
PresstheMODEkeyuntilthedisplayshowsthecorrecttemperature.(TheMODEkeywillscrolltothemaximumallowablevalue,andthenloopbacktotheminimumallowablevalue.Themaximumadjustmentis+/-5 fromthedisplayedreading.)
CO
CAL HOLDENTER
ONOFF
MODE
MODE
HOLDENTER
ONOFF
CAL
CAL HOLDENTER
ONOFF
MODE
CAL
MODE
HOLD
ENTER
HOLDENTER
ONOFF
12 pH 5 Meter
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MODEINC
ONOFFONOFF
Measuring pH
3.
1. 2.Rinsetheelectrodeandtemperatureprobewithdistilledordeionizedwater.
distilledH2O
PresstheON/OFFbuttontoturnthemeteron.
Immersetheelectrodeandtemperatureprobeapproximately1"-2"inthesample.Stirgentlyandwaitforthedisplaytostabilize.RecordthereadingaspH.
E T
1"-2"
E TNOTE:PresstheHOLD/ENTERkeyoncetofreezethereading.TheLCDwillshow"HO"toindicatethattheHOLDfunctionisactivated.PresstheHOLD/ENTERkeyagaintodeactivatetheHOLDfunctionandtoreturntothemeasurementmode.
pH3.28HO
CALHOLD
ENTER
HOLDENTERCAL
HOLD
ENTER
HOLDENTER
ONOFFONOFF
MODEINC
pH 5 Meter 13
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7. 8.
MODEINC
CAL HOLDENTERHOLDENTER
ONOFFONOFF
CAL HOLDENTERHOLDENTER
ONOFFONOFF
MODEINCMODEINC
ONOFFONOFF
Measuring pH of Soil
5.
3.
1.
Waituntilthedisplaystabilizes.RecordthereadingaspH.
Stirthesample.ImmediatelyplacethepHelectrodeandthetemperatureprobeinthesample.
E T
20gsoil20mldistilledwaterPlacea1:1ratioofsoilanddistilledwaterinasmallbeaker.Formostanalyses,20gramsofsoiland20mLofdistilledwateraresufficient.
CAL HOLDENTER
ONOFF
MODEINC
2.
4.PresstheON/OFFkeytoturnthemeteron.
Wait15minutes.Stiroccasionallywithastirringrod.
15
NOTE:PresstheHOLD/ENTERkeyoncetofreezethereading.TheLCDwillshow"HO"toindicatethattheHOLDfunctionisactivated.PresstheHOLD/ENTERkeyagaintodeactivatetheHOLDfunctionandtoreturntothemeasurementmode.
pH3.28HO
CALHOLD
ENTER
HOLDENTERCAL
HOLD
ENTER
HOLDENTER
ONOFFONOFF
MODEINC
14 pH 5 Meter
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MODEINC
ONOFFONOFF
Measuring Temperature
3.
1. 2.
4.
Rinsethetemperatureprobewithdistilledordeionizedwater.
PresstheON/OFFbuttontoturnthemeteron.
Immersethetemperaturesensorapproximately1"to2"inthesample.
NOTE:PresstheHOLDkeyoncetofreezethereading.TheLCDwillshow"HO"toindicatethattheHOLDfunctionisactivated.PresstheHOLDkeyagaintodeactivatetheHOLDfunctionandtoreturntothemeasurementmode.
5.
PresstheMODE/INCkeytoselect"C".
distilledH2O
Stirthesamplegentlywiththeprobeandwaitforthedisplaytostabilize.RecordthereadingasC.
1"-2"1"-2"
1"-2"1"-2"
T
T
T
o
23.2HO C
CALHOLD
ENTER
HOLDENTERCAL
HOLD
ENTER
HOLDENTER
ONOFFONOFF
MODEINC
CAL HOLDENTER
ONOFF
MODEINC
pH 5 Meter 15
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TroubleshootingProblem Check Action
Er Message Buffers Use fresh 4.01, 7.00 or 10.00 buffer
Electrode Replace
Ur or Or Message pH of sample Must be within range
Temperatureof sample
Electrode
Must be within range
Replace
Temperature
probe
Replace
LO Message Batteries Replace
Power on, but no display Batteries Insert batteriesVerify correct polarityReplace
Unstable reading ElectrodeElectrode
Immerse probe more deeply in sampleReplace probe
Interference fromnearby motor
Remove or switch off
Slow response Electrode Replace
Display locked Electrical dischargenear meter
Switch meter off and then on again.Remove batteries and reinsert
16 pH 5 Meter
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Warranty Information
RepairsIfitisnecessarytoreturntheinstrumentforrepair,contactLaMotteCompanyat1-800-344-3100forareturnauthorizationnumber.WarrantyThisInstrumentisguaranteedtobefreefromdefectsinmaterialandworkmanshipforaperiodoftwo(2)yearsfromtheoriginalpurchasedate,excludingprobes.Intheeventthatadefectisfoundduringthewarrantytimeframe,LaMotteCompanyagreesthatitwillberepairedorreplacedwithoutchargeexceptforthetransportationcosts. Thisguaranteedoesnotcoverbatteries.ThisproductcannotbereturnedwithoutareturnauthorizationnumberfromLaMotteCompany. ForwarrantysupportoraReturnAuthorizationNumber,contactLaMotteCompanyat1-800-344-3100ortech@lamotte.co.LimitationsThisguaranteeisvoidunderthefollowingcircumstances:Damageduetooperatornegligence,misuse,accidentorimproperapplication.Damageoralterationsfromattemptedrepairsbyanunauthorized(non-LaMotte)
service.Damageduetoimproperpowersource,ACadapterorbattery.DamagecausedbyactsofGodornaturaldisaster.Damageoccurredwhileintransitwithashippingcarrier.
LaMotteCompanywillserviceandrepairout-of-warrantyproductsatanominalcharge.LimitsofLiabilityUndernocircumstancesshallLaMottecompanybeliableforlossoflife,profits,orotherdamagesincurredthroughtheuseormisuseoftheirproducts.PackagingandDeliveryExperiencedpackagingpersonnelatLaMotteCompanyassureadequateprotectionagainstnormalhazardsencounteredduringshipping.Aftertheproductleavesthemanufacturer,allresponsibilityforitssafedeliveryisassuredbythetransporter.Damageclaimsmustbefiledimmediatelywiththetransportertoreceivecompensationfordamagedgoods.18 pH 5 Meter
mailto:[email protected]:[email protected]:[email protected]7/28/2019 LaMotte 5-0034 pH Meter pH5 Plus Handheld Manual
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7/28/2019 LaMotte 5-0034 pH Meter pH5 Plus Handheld Manual
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LaMOTTE COMPANYHelping People Solve Analytical Challenges
PO Box 329 Chestertown Maryland 21620 USA800-344-3100 410-778-3100 (Outside USA) Fax 410-778-6394
Visit us on the web at www.lamotte.com
626094-20 8/09
http:///reader/full/www.lamotte.comhttp:///reader/full/www.lamotte.com