Extech Instruments TB400 User manual

USERGUIDE



TurbidityMeter



ModelTB400





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TB400-en-GB_V1.3 8/16

Introduction

CongratulationsonyourpurchaseoftheTB400Turbiditytester.TheTB400measuresturbidity

upto1000NTU.TheadvantagesoftheTB400totheuserinclude:Easytouseandmaintain,high

accuracy,self‐calibration,andfastresponse.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.



Applications

Typicalapplicationsincludethemeasurementofmunicipalwater,foodandbeveragewater,or

otheraqueoussolutionswherefluidclarityisimportant.



MeterDescription



1. LCDDisplay

2. HOLDbutton

3. REC‐MAX‐MINbutton

4. POWERbutton

5. ZERObutton

6. TEST‐CALbutton

7. Testbottlechamberlatch

8. Testbottlechamber

9. Testbottle

Batterycompartmentonrearofmeter



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TB400-en-GB_V1.3 8/16

MeasurementProcedure

Calibration

1. Ensurethatthemeterhasbeencalibratedpriortouse.

2. Refertothecalibrationsectionforthisprocedure.

SamplePreparation

1. Placethetestingliquidintothesuppliedsamplebottleuptothe10mLlineandsecure

thecaptothebottle.

2. Cleananddrytheoutsideofthesamplecuptoensureacleansurface.

Measurement

1. ThemetershouldbeswitchedOFF.

2. OpenthetestchambercoverandInsertthetestingbottlecompletelyintothechamber.

3. Lineupthewhitemarkofthetestingbottlewiththewhitemarkontheedgeofthetest

chamber.

4. Closethechambercoverandlockitinplace.

5. Pressthe“POWER”buttontoturnonthemeter.

6. Momentarilypressthe“TEST”button.Thedisplaywillflash"tESt"forapproximately10

secondsandthentheturbidityvalue,inNTUunits,willbedisplayed.

7. MomentarilypresstheOFFbuttontoturnoffthemeter.

DataHOLD

Pressthe“HOLD”buttononcewhiletakingameasurementtofreezethevalueonthedisplay.

Press“HOLD”againtoreleasetheDataHoldfunction.



DataRecord(MAX/MINReadings)

1. ThedatarecordfunctionrecordstheMAXandMinreadings.Press"REC"buttononceto

begindatarecording.TheLCDwilldisplaythe"REC"symbol.

2. Inrecordingmodepress"REC"once.Thedisplaywillshowthemaximumreadingand"REC

MAX"willappearontheLCDdisplay.

3. Press"REC"buttononceagainand"RECMIN"willappearontheLCDalongwiththe

minimumreading.

4. TodeletetheMAXorMINvaluepress"HOLD"once.TheLCDwilldisplay"REC".

Auto‐PowerOFF

TheAutoPowerOFFfeatureautomaticallyswitchestheTB400OFF10minutesafterthelastkey

press.

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TB400-en-GB_V1.3 8/16

Calibration



Acompletecalibrationwillrequiretestingwithboth0NTUand100NTUtestsolutions.



Ensurethatthesidesofthebottlearecleananddrytopreventmeasurementerrors.



CalibrationProcedure(0NTUand100NTU)

Note:Makesureyoucompletethecalibrationstepswithaslittletimeaspossiblebetween

the0NTUandthe100NTUtestbottles.



1. InserttheZeroNTUsolutionbottleintothetestingchamber,lineupthewhitemarks,and

closeandlatchthecover.TurnonthemeterandPressandholdthe"CAL"buttonuntilthe

LCDdisplays"CAL"thenreleasethe“CAL”button.



2. WaitonesecondandthentheLCDwilldisplay:



Note:IftheLCDdoesnotdisplayzerowhenusing"0NTU"liquid,pressthe"ZERO"button

continuouslyuntiltheLCDdisplaysazerovalue.



3. Themeterisnowreadyfor"0NTU"calibration.

4. Momentarilypress"CAL"button.TheLCDwillflashCALforabout10secondsandthenshow

thefollowingdisplay:



5. TheLCDwillthendisplay:



6. Liftthelidonthetestchamberandremovethe0NTUtestsolutionbottle.

CAL

ntu

0.00

CAL ntu

CAL

0.00 ntu

100

CAL ntu

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TB400-en-GB_V1.3 8/16

7. Gentlyshakethe100NTUtestsolutionbottle,Lineupthewhitemarkonthebottleand

insertitintothetestchamberandcloseandlockthecover.

8. Momentarilypressthe"CAL"button.TheLCDwillflashCALfor10seconds.



9. WhencalibrationiscompletetheLCDwillreturntonormaloperatingmode.



NOTE:Ifthefollowingerrormessageappears"Errorcannotbecalibrated..."checkthevalueofthe

standardsolution.Iferrormessagestillappearscompletethe"CalibrationClear"

procedure.

CAL

100 ntu

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TB400-en-GB_V1.3 8/16

CalibrationClearProcedure

1. Thecalibrationclearprocedurewillclearallcalibrationvaluesandreturnthemeterto

defaultsettings.

2. PowerONthemeterwiththecoverclosedbutnotestingbottleinthechamber.

3. Pressthe"CAL"buttoncontinuouslyuntiltheLCDdisplays"CAL"



4. Waitonesecond;theLCDwillthendisplay:



5. Momentarilypressthe"HOLD"button.TheLCDwilldisplay:



6. Momentarilypressthe"HOLD"buttonagain.TheLCDwilldisplay:



7. MomentarilyPressthe"CAL"button.TheLCDwillflash"CAL"for10seconds:



8. Thecalibrationdatacleariscomplete.Themeterwillreturntonormaloperatingmode.



CAL

ntu

0.00

CAL ntu

CLr

CAL ntu

CAL

CLr

100

CAL ntu

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TB400-en-GB_V1.3 8/16

Maintenance

LowBatteryIndication

Whenthebatteriesbecomeweakthe“ ”iconwillappearinthedisplay.RefertotheBattery

Replacementsectionforbatteryreplacementinformation.

BatteryReplacement

1. Removethetwo(2)screwsonthebackofmeterandremovethebatterycover.

2. Replacethesix(6)AAAbatteriesobservingpolarity.

3. Closethebatterycoverandreplacethescrews.

BatterySafetyReminders

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

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



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.

Cleaning

Wipethemeterhousingwithadampcloth.Donotuseabrasivesorsolvents.



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TB400-en-GB_V1.3 8/16

Specifications

DisplayLCDsize:41mmx34mm(1.6x1.3”)

Range0.00to49.99NTU(NephelometricTurbidityUnit)

50to1000NTU

Resolution0.01NTU/1NTU

AccuracyRange0to49.99:±5%readingor±0.5NTUwhicheverisgreater

Range50to1000:±5%reading

OperatingTemperature 0to50oC(32to122oF)

OperatingHumidityLessthan85%RH

LightSource LED,850nm

LightDetectorPhotoDiode

ResponseTimeLessthan10seconds

SampleVolume10mLminimum

PowerSix1.5VAAAbatteries

PowerconsumptionStandbyMode:approx.3.5mADC;TestingMode:approx.36mADC

Dimensions/Weight155x76x62mm(6.1x3.0x2.4”);320g(0.70lbs)

AutoPowerOFFAutomaticallyswitchesoff10minutesafterthelastkeypress

StandardMeetsISO7027



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

ISO‐9001Certified

www.extech.com



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