Extech Instruments Oyster 341350A-P User manual

USERGUIDE



OysterMeter

pH,Conductivity,TDS,Salinity,andORP(mV)



Model341350A



www. .com information@itm.com1.800.561.8187

341350A-en-US_V1.3 8/15

Introduction

CongratulationsonyourpurchaseoftheExtechOysterSeriesmeter.ThisdevicemeasurespH,

Conductivity,TDS,ORPandSalinity.Thesemetersareintendedforroutinelaboratoryandfield

testing.Accuratemeasurementsareprovidedinabatteryoperated,portablemeterwithahinged

displaythatcanbeadjustedtoanyviewingangle.Thisdeviceisshippedfullytestedandcalibrated

and,withproperuse,willprovideyearsofreliableservice.



MeterDescription

FrontandSidepanels

1. LCDdisplay

2. Batterycompartment

3. Powerbutton

4. Up/Downarrowbuttons

5. MODE/CALbutton

6. UNIT/SETbutton

7. STORE/RECALLbutton

8. Connector,Conductivityprobe

9. Connector,pHprobe,ORPprobe

10. Connector,Temperatureprobe

11. Connector,ACadaptor



Display

1. Modeindicators

2. Primarydisplay

3. DataHoldindicator

4. ProbeRenewindicator

5. AutoPowerOffindicator

6. Lowbatteryindicator

7. Memorystatusindicators

8. Calibrationstatusindicators

9. Temperaturedisplay

10. Unitindicators

891011

789

www. .com information@itm.com1.800.561.8187

341350A-en-US_V1.3 8/15

Operation

BatteryInstallation/Replacement

Openthebatterycoverbyinsertingasmallcoinintothelatchslotandpressingdownward.The

coverwillreleaseinthedirectionofthearrow.Installthenewbatteryandreplacethecover.



pHMeasurements

1. PressthePOWERbuttontoturnthemeterON(themeterwillcyclethroughaself‐check).

2. PresstheMODE/CALbuttonuntilthePHiconswitcheson.

3. PresstheUNIT/SETbuttontoselectºCorºF.

4. ConnectthepHelectrodetothesidepHBNCconnector.

5. Adjustthe▲▼buttonstomatchthetemperatureofthesolution(orusetheexternal

temperatureprobetodoso).

6. Ifrequired,calibratetheelectrode(seepHCalibration).

7. PlacetheelectrodeinthesamplesolutionandreadthepHvalueonthedisplay.

8. Whenallmeasurementshavebeentaken,unplugtheelectrodeandrinseindistilledwater;

thenshakeandstoreitinthewettingcapwith4.0MKCLorinapH4buffersolution.

Conductivity/TDS/SaltMeasurements

1. PressthePOWERbuttontoturnthemeterON.

2. PresstheMODE/CALbuttonuntiltheCOND,SALTorTDSiconisdisplayed.

3. Connecttheconductivityelectrodetothesideconductivityconnector.

4. Ifrequired,calibratetheelectrode(seeConductivityCalibration).

5. Placetheelectrodeinthesamplesolutionandreadthevalueonthedisplay.

6. Whenfinished,unplugtheelectrodeandrinseindistilledwater.

ORP(mV)Measurements

1. PressthePOWERbuttontoturnthemeterON.

2. PresstheMODE/CALbuttonuntiltheORPiconisdisplayed.

3. ConnecttheORPelectrodetothesideORPBNCconnector.

4. PlacetheelectrodeinthesamplesolutionandreadthemVvalueonthedisplay.

5. Whenallmeasurementshavebeentaken,unplugtheelectrodeandrinseindistilledwater.

6. Storetheprobetipinthewettingcapina4.0MKCLorinapH4buffersolution.

www. .com information@itm.com1.800.561.8187

341350A-en-US_V1.3 8/15

DataMemory

25readingscanbestoredto,andrecalledfrom,theinternalmemory.

Storingreadings

1. Withthereadingonthedisplay,momentarilypresstheSTORE/RECALLbutton.TheSTORE

andHOLDdisplayiconswillappearontheLCDandthereadingwillfreeze.

2. MomentarilypresstheSTORE/RECALLbuttonagaintoconfirmandtoreturntothenormal

operationmode.

3. Upto25readingscanbestoredinthisway.

RecallingReadings

1. PressandholdtheSTORE/RECALLbutton.TheRECALLiconandthememorylocation

numberwillappear,followedbythedatastoredinthedisplayedmemorylocation.

2. Usethe▼▲buttonstoscrollthroughthememorylocationsandtoviewthestoreddata.

3. MomentarilypresstheSTORE/RECALLbuttontoexittheRecallReadingsmode.Endwill

appearinthedisplay;themeterwillthenreturntothenormalmeasurementmode.

Clearingthememory

Withthemeteron,pressandholdthe▼and▲buttonsfor2seconds.TheCLriconwillappear

onthedisplay,indicatingthatthememoryhasbeenerased.

TemperatureUnits

PresstheUNITbuttontoselectºForºC.

ManualTemperatureCompensation

InthepHmode,thesolutiontemperaturecanbemeasuredandsetbyusingtheoptional

externaltemperatureprobeor,whentheprobeisnotused,byadjustingthetemperature

display.Pressthe▲▼buttonstosetthetemperaturewhentheMTCiconisdisplayed.



TheConductivityprobehasabuilt‐intemperaturesensorsomanualtemperaturecompensation

doesnotapplyforConductivitymeasurements.

AutoPoweroff(APO)

ThemeterisequippedwithanAutomaticPowerOfffeature.Themeterwillpowerdownaftera

10‐minuteperiodofinactivity.ThisfeaturecanbedisabledbypressingandholdingthePOWER

buttonfor2seconds(theAPOdisplayiconindicatesthatthisfeatureisenabled).Afterdisabling

APO,thenexttimethemeterispoweredupAPOwillbere‐enabled.

ResettoDefaultsettings

Themetercanberesettoitsfactorydefaultconfiguration:

1. WiththemeterOFF,pressandholdthePOWERandSTORE/RECALLbuttonssimultaneously

untildFLtrStappearsinthedisplay.

2. Releasethebuttonsandthemeterwillcontinuewithanormalstartup.

3. Defaultvaluesinclude:Calibrationvalues,Conductivitymode,ºC,MTC,APOandRENEWoff



www. .com information@itm.com1.800.561.8187

341350A-en-US_V1.3 8/15

pHCalibration(1,2,or3points)

Atwopointcalibrationwithabufferof7plus4or10(whicheverisnearesttotheexpected

samplevalue)isalwaysrecommended.Aonepointcalibration(choosethevalueclosesttothe

expectedsamplevalue)orathreepointcalibrationisalsovalid.Forbestaccuracy,always

calibrateatthesampletemperature.Frequencyofcalibrationisdependentonhowoftenthe

meterisused,thecareoftheelectrode,andstrengthofthesamplestested.Typically,itis

recommendedthatcalibrationbeperformedonceaday;orbeforeeachuseifthemeterisnot

usedonadailybasis.

1. ConnectthepHprobeandplaceitintoapH7buffer.

2. PressthePOWERbuttontoturnthemeteronandpresstheMODE/CALbuttonuntilthePH

iconappears.(Note:disabletheAutoPowerOfffeaturetoavoidanautomaticpoweroff

duringcalibration).

3. IftheMTCiconappearsnexttothetemperaturedisplay,pressthe▼or▲buttontoset

thetemperatureofthepHbuffer.Iftheoptionaltemperatureprobeisused,insertthe

probeintothebuffersolution.

4. PressandHOLDtheMODE/CALbuttonuntilthedisplaybeginstoflash‘7.00’.Themeter

automaticallyrecognizesthebufferandcalibratesitselftothatvalue.Attheendofthe

calibrationcycle,SAandEndwillbrieflyappearonthedisplayandthemeterwillreturnto

thenormaloperatingmode.

5. Whenacalibrationisperformed,thecalibrationicons(pH10)(pH7)(pH4)willbe

cleared(calibrationdataisnoterased)andwillbereplacedwhenasuccessfulcalibrationis

performedforeachbufferwithinonepoweroncycle.Theseiconsindicatewhatcalibration

levelswerelastperformed.Theydonotindicatehowrecentlythecalibrationwas

performedorifthecalibrationsarestillvalid.

6. RemovetheelectrodefromthepH7buffer,rinseinarinsesolutionandinsertitintothe

pH4orpH10buffersolution.

7. Repeatstep4forthesecondcalibrationpointandthenthethirdpointifdesired.

Note:Iftheoutputoftheelectrodefallsoutsidepredeterminedlimits,themeterwillcancelthe

calibration,indicateEnd,andflashtheRENEWicon.Thistypicallyhappenswhentheelectrode

hasagedandneedsreplacement.

Note:Toavoidcrosscontamination,alwaysrinsetheelectrodeinarinsesolution,likedistilled

water,whenchangingfromonebufferorsampletothenextbufferorsample.



ORPCalibration

TheORPelectrodedoesnotrequirecalibration.

However,youcantesttheORPprobe’saccuracyusinganORPstandard.



www. .com information@itm.com1.800.561.8187

341350A-en-US_V1.3 8/15

Conductivity(TDS&Salt)Calibration

Conductivityaccuracyverificationshouldbeperformedonaperiodicbasis;oncepermonthis

therecommendedcyclefornormaluse.Ifcalibrationisrequired,aconductivitystandard

solutionmustbeobtained.Themetercanbecalibratedinanyorallofthethreeranges.

Standardizingsolutionsof84µS/cm,1413µS/cmor12.88mS/cm(12,880µS/cm)areusedforthe

automaticcalibrationrecognitionprocedure.Noothercalibrationvaluesarepermitted.

Calibrationisalwaysdoneinconductivitymode.SincesalinityandTDSvaluesarecalculated

fromconductivityvalues,thisprocedurealsocalibratestheSalinityandTDSranges.

1. Fillasamplecupwiththestandardizingsolution.

2. TurnthemeterONandinserttheelectrodeintothesolution.Tapormovetheelectrodein

thesampletodislodgeanyairbubbles.

3. PressandholdtheMODE/CALbutton(approximately2seconds)untilthemaindisplay

startsflashing.

4. Themeterwillautomaticallyrecognizeandcalibratetothestandardizingsolution.Atthe

endofthecalibration,thedisplaywillbrieflyindicate“SA”,“End”andthenreturntothe

measurementmode.

Note:The“SA”willnotappearifthecalibrationfails.

5. The“rangecalibrated”alertwillappearinthedisplayforeachrangethatiscalibrated

duringthatpoweroncycle.

Lowrange,84µS/cm

Mediumrange,1413µS/cm

Highrange,12.88mS/cm(12,880µS/cm)

Note:Themeterallowsfora1,2or3pointcalibration.Ifcalibrationisdoneformorethanone

point,thelowestvaluestandardshouldbedonefirsttoobtainthebestaccuracy.



Temperature(pHandConductivity)OffsetCalibration

Thisprocedureallowsforerrorcorrectionoftheexternaltemperatureprobe(pH)orthe

conductivityprobe’sbuilt‐intemperaturesensor.

1. SwitchtopHorConductivity(Salt/TDS)mode.

2. Placethetemperatureprobeorconductivitycellinthesampleandallowthetemperature

readingtostabilize.

3. PressandholdtheUNIT/SETbuttonuntiltheºCorºFiconbeginsflashing.

4. Adjustthe▼or▲buttonstosetthedisplaytoindicatetheknowntemperatureofthe

sample.

5. MomentarilypresstheUNIT/SETbuttontosavethechangeandreturntothemeasurement

mode.



www. .com information@itm.com1.800.561.8187

341350A-en-US_V1.3 8/15

pHTroubleshootingChart

SymptomCauseRecommendedSolution

Longresponse

timeorreading

drift

CloggedJunctionSoakin4.07MKCL@60oCfor30

minutes

Oil,paint,dyes,suspendedsolidson

sensor

Rinseelectrodealternatelywith

materialssolventthenbuffer7.00

DryBulbLongtermstoragewithoutwetting Soakelectrodetipinwettingcapfilled

with1ml7.00bufferfor24to48hours

StaticChargeWipingelectrodesRinseelectrodein7.0bufferandblot.

Donowipeelectrode.

Samereadingsin

differentbuffers

andsamples

CrackedorbrokenbulbReplaceelectrode.Usebulbguard.

Avoidplungingelectrodetobottomof

containerandspinningbars.Awetting

capwillprotectbulbbetween

measurements.

ErraticLCD

display

Sampleshavelowionicstrength

(lackssalt);e.g.distilled,de‐ionized,

boiled,lakewater(highpressure)

Foreach50mlofsampleadd1drop

(50uL)ofSAT.KCLNoalterationinpH

willoccurbyinertKCL.



NotesonpHmeasurementsandelectrodes

1. TheElectrodeshouldbestoredinitswettingcapuntilused.UseapH4buffersolutionora

4.0MKCLsolution.

2. Ifbubblesareseeninthebulbarea,holdtheelectrodebyitscapandshakedownwards

untilbubblesareremoved.

3. Toimprovespeedofresponse,vigorouslystirtheelectrodeinthesample,buffer,orrinse

solution.

4. Afterexposuretoasample,buffer,orrinsesolution,shaketheelectrodewithasnap

motiontoremoveresidualdropsofsolution.

5. Whenpossible,usepartofthenextsample/buffertobemeasuredasarinsesolution,.

6. Keepbuffersandsamplesatthesametemperaturetoavoidtemperatureeffects.

7. pHreadingsstabilizefasterinsomesolutionsthanothers;allowtimetostabilize.

8. Electrodesdeteriorateovertime.Ifaccuracyfallsto10%theelectrodeshouldbecleaned.If

noimprovementisobserved,replacetheelectrode.

NotesontheConductivity/TDS/SaltCell

1. CellStorage:Onsheathedcells,replacethesheathoverthecellwhenstoring.Fornon‐

sheathedversions,soakthecelltipinde‐ionizedwaterforstorage.

2. CellCleaning:Aftereachuse,thecelltipshouldberinsedwithde‐ionizedwater.Ifsolids

buildupinsidethecellcarefullyremovewithacottonswabsoakedinsolventtakingcare

nottotouchthemetalpartsoftheinnercell.

www. .com information@itm.com1.800.561.8187

341350A-en-US_V1.3 8/15

SPECIFICATIONS

RangesResolutionAccuracy

pH0.00to14.00pH0.01pH±0.02pH

Conductivity0.0to200.0µS

200to2000µS

2.00to20.00mS

0.1µS

1µS

0.01mS

±2%FS

TDS0.0to134.0ppm

134to1340ppm

1.34to13.40ppt

0.1ppm

1ppm

0.01ppt

(calculatedfromConductivity)

Salinity0.0to100.0ppm

100to1000ppm

1.00to10.00ppt

0.1ppm

1ppm

0.01ppt

(calculatedfromConductivity)

ORP‐1500to1500mV1mV±3mV

Temperature32to194ºF

0.0to90.0ºC

0.1º≤99.9º

1º≥100º±2ºF/1ºC(meter+probe)



Display9999countLCD

MTCtemperaturerange32.0to194.0ºF(0.0to90.0ºC)

pHcalibrationpoints4.00,7.00and10.00pH

Conductivitycalibrationpoints84.0µS,1413µS,and12.88mS

TDSconversionratio0.67(fixed)

Salinityconversionratio0.5(fixed)

AutoPowerOFFAfter10minutesofinactivity(canbedisabled)

Overrangeindication “OL”

OperatingTemperature41ºFto104ºF(5ºCto40ºC)

StorageTemperature‐4ºFto140ºF(‐20ºCto60ºC)

OperatingHumidityMax80%upto87ºF(31ºC)decreasinglinearlyto50%at

104ºF(40ºC)

StorageHumidity<80%

OperatingAltitude7000’(2000m)maximum

Power9ValkalinebatteryorACadapter

Dimensions4.7x3.8x1.8”(118x96x45mm)withmeterclosed

Weight12oz.(340g)



www. .com information@itm.com1.800.561.8187

Other manuals for Oyster 341350A-P

This manual suits for next models

Table of contents

Other Extech Instruments Measuring Instrument manuals

Extech Instruments

Extech Instruments UV510 User manual

Extech Instruments

Extech Instruments TM100 User manual

Extech Instruments

Extech Instruments TM100-NIST User manual

Extech Instruments

Extech Instruments 461920 User manual

Extech Instruments

Extech Instruments RH401 User manual

Extech Instruments

Extech Instruments TKG100 User manual

Extech Instruments

Extech Instruments MO230 User manual

Extech Instruments

Extech Instruments 401027 User manual

Extech Instruments

Extech Instruments ExStik FL700 User manual

Extech Instruments

Extech Instruments EA80 User manual

Extech Instruments

Extech Instruments MO270 User manual

Extech Instruments

Extech Instruments 407445 User manual

Extech Instruments

Extech Instruments AN500 User manual

Extech Instruments

Extech Instruments 380580 User manual

Extech Instruments

Extech Instruments SL10 User manual

Extech Instruments

Extech Instruments MO57 User manual

Extech Instruments

Extech Instruments 380973 User manual

Extech Instruments

Extech Instruments 45158 User manual

Extech Instruments

Extech Instruments SDL100 User manual

Extech Instruments

Extech Instruments MA435T User manual

Extech Instruments

Extech Instruments 407735 User manual

Extech Instruments

Extech Instruments MO50 User manual

Extech Instruments

Extech Instruments CO10 User manual

Extech Instruments

Extech Instruments SDL600 User manual

Popular Measuring Instrument manuals by other brands

Suaoki

Suaoki D40 user manual

Elster

Elster BK-G1.6 operating instructions

Endress+Hauser

Endress+Hauser Deltabar FMD71 technical information

Duratool

Duratool D03128 manual

Vega

Vega VEGAPULS 65 Quick setup guide

Tonghui

Tonghui TH2618B Operation manual

Tenmars

Tenmars TM-801 user manual

MSR

MSR 145 user manual

TPS

TPS WP-82 manual

ELMETRON

ELMETRON CP-511 user manual

PCB Piezotronics

PCB Piezotronics 003C30 Installation and operating manual

Tenma

Tenma 72-10465 manual

Endress+Hauser

Endress+Hauser Proline Promag 50 Brief operating instructions

Siemens

Siemens SITRANS F Coriolis FCT030 Function manual

KLINGER

KLINGER CMF V Series instruction manual

EXFO

EXFO FTB-2 Notice

Keysight

Keysight M8290A Getting started guide

ADTEK

ADTEK MW-5 operating manual