Extech Instruments MO55 Manuel utilisateur

USERMANUAL

DualMoistureMeter

PinandPinlessMoistureMeasurements



ModelMO55

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MO55‐en‐GB_V1.002/16

Introduction

ThankyouforselectingtheExtechMO55PinandPinlessDualMoistureMeter.Thecompact

MO55takesquickMoisturelevelreferencemeasurements(inpercent%)onwoodandbuilding

materials.TheMO55canbeusedinpinlessmode(rearsensor)orinpinmode.TheMO55is

simpletooperateandoffersmeasurementdigits,audibletonesand‘moisturedrop’iconsto

indicatemoisturelevelcontent.



TheMO55isidealforbuildingrestorationprojectsandapplicationswheremoisturedetectionon

floorsandundercarpetsiscritical.TheMO55isagreattoolforanalyzingtheafter‐effectsof

waterleakagebehindwallsandinceilings.



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,ProductRegistration,andCustomerSupport.

Features

Displaysthemoisturelevelinwoodandbuildingmaterials(wallboard,sheetrock,cardboard,

plaster,concrete,andmortar)

Pinless(non‐invasive)orPinmodesofoperation

AutozerocalibrationforPinlessmode

Audibletoneratebeepsfasterasthemoisturelevelincreases(8tonevariations)

‘Moisturedrop’Iconsdisplaylow,mediumandhighlevelsofmoisturecontent

Easy‐to‐use,compactdesign

DisplayLockfreezesreadingondisplay

AutoPowerOffafter2minutesconservesbatterypower

Completewithextrapins(4),protectivecap,and9Vbattery



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MO55‐en‐GB_V1.002/16

Description

MeterDescription

1. Protectivecoverandpin‐modeself‐testcircuit

2. Measurementpins

3. LCDDisplay

4. Powerbutton

5. Mode(M)Pin/PinlessandMaterialselection

6. DisplayLock/Beeperbutton

7. Internalsensor(rear)

8. Batterycompartment(rear)





DisplayDescription

1. MoistureDropicons(1dropletforlowmoisturecontent,2formedium,and3forhigh)

2. Woodmode

3. BuildingMaterialmode

4. Beeperactiveicon

5. Moisturereadingdigits

6. Percentmoistureunit(relative)

7. DisplayLockmode

8. Batterystatusicon

ButtonDescription

ButtonButtonnameDescription

PowerON‐OFFPressandholdtoswitchthemeterONorOFF

MMode(MaterialSelect)SelectMaterial(Wood,BuildingMaterials)for

PinorPinlessmode

/DisplayLock/BeepercontrolShortpresslocksreadingonthedisplay

LongpresstogglestheBeeperON/OFF

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MO55‐en‐GB_V1.002/16

Operation



OperatingSteps

1. Forpinmode,carefullyremovetheprotective/testcaptoexposetheelectrodepins.

2. SwitchthemeterONbylongpressofthebutton.Themeteremitsaudibletonesandthe

displayswitchesonwhenthemeterpowersup.Ifthemeterdoesnotswitchonpleasecheck

thebatteryintherearcompartment.

3. MomentarypressesoftheMode(M)buttonstepthroughthefollowingfourmaterialmodes:

Wood‐Pinmode,BuildingMaterial‐Pinmode,Wood‐Pinlessmode(iconblinking)

,andBuildingMaterial‐Pinlessmode(iconblinking).

4. Forpinmode,pushtheelectrodepinsintothematerialundertest.

5. Forpinlessmode,withpoweron,holdthemeterinopenair

(rearsensorshouldbeclearofhandsandanyobjects)andthen

selectmaterial(step3);themeterisnowzero‐calibrated.Press

thesensorfirmlyagainstthesurfaceundertesttotakea

reading.

6. Observethedisplayedreadinginpercent(%),viewthedisplayedmoisturedropleticon

andlistenfortheaudibletones.

1moisturedropletforlowreadings;2formediumreadings;3forhighreadings;refertothe

chartonthebackofthemeter.Listenfortheaudibletone(fastbeepingforhigherreadings

andslowbeepingforlowerreadings).Thereareeight(8)tonevariations.

7. Longpressofthepowerbuttonswitchesthemeteroff.

MeasurementInterpretationTable

PINMODEPINLESSMODE

WOOD(%)BUILDING

MATERIAL(%)

WOOD(%)BUILDING

MATERIAL(%)

TOTALRANGE>5.0~50.01.5~33.00.0~99.90.0~99.9

LOW5.0~11.91.5~16.90.0~16.90.0~16.9

MEDIUM12.0~15.917.0~17.917.0~29.917.0~29.9



HIGH16.0~50.020.0~33.030.0~99.930.0~99.9

AutoPowerOFF(APO)

Toconservebatteryenergythemeterautomaticallyswitchesoffafteratwo‐minuteperiodof

inactivity.

CAUTION:Theelectrodemeasurementpinsareextremelysharp.Usecarewhen

handlingthisinstrument.Coverthepinswiththeprotectivecapwhennotinuse.

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MO55‐en‐GB_V1.002/16

DisplayLock

PresstheDisplayLockbutton tofreezethedisplayedreading.The iconisvisibleonthe

displaywhenDisplayLockisactive.Pressagaintoreturntothenormaloperatingmode.

BeeperON/OFF

ThebeeperdefaultstoON.ToswitchthebeeperOFF,pressandholdtheDisplayLock/Audible

Beeperbutton untiltheicondisappears.Whenthebeeperisactivetheaudiodisplayicon

willbevisible.

Pin‐ModeSelf‐Test

TurnonthemeterandsetthemetertoPinmodeWoodorBuildingmaterialsandthentouch

theelectrodepinstothecontactsthroughtheholesatthetopoftheProtective/Testcap.

Expectedresult:Wood17.0to19.0%;Building15.5to17.5%

Whenthemeterreadsoutsideoftheserangespleasereplacethebatteryandretry.Ifthemeter

continuestoreadoutsideoftheseranges,themetershouldbereturnedforservice.

PinlessModeComparisonMeasurements

Whileholdingthemeteragainstaknowndrysurface,turnonthemeter.PresstheMode(M)

buttontosteptothepreferredsetting,blinkingwoodorblinkingbuildingmaterialicon.The

meterwillnowread0%(relative/offsetreading).Nowmovethemetertootherareastotestto

findhigherlevelsofmoisture.

Maintenance

BatteryReplacement

Whenthebatterystatusiconappearsemptyorflashing,replacethebattery.

1. Removetherearbatterycompartmentcoverbypushingthecompartmentlatch.

2. Replacethe9Vbatteryobservingcorrectpolarity.

3. Replacethecompartmentdoorsecurely.

4. Disposeofbatteryresponsiblyandwithinapplicablelegalregulations.



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.

CareandCleaning

Whentheinstrumentisnotinusepleasekeeptheprotectivecapinplace.

Storethemeterinastable,dust‐freeenvironment;outofdirectsunlight.

Removethebatteryfromtheinstrumentifthemeteristobestoredforlongperiodsorif

thebatterypowersymbolappearsempty(orflashing)onthedisplay.

Tocleanthemetercase,wipewithadampclothdonotusesolventsorabrasives.

Tocleanthepins,wipecarefullywithadampclothtoremoveresidue;allowtodrywell.

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MO55‐en‐GB_V1.002/16

Specifications

DisplayLCDwithmulti‐functionindicators

MeasurementtypeRelativeMoistureContent(%)

MeasurementprincipleElectricalresistance(pins)

Electricalcapacitanceinternalsensor(pinless)

MeasurementdepthPinlessmode:<25mm(1in.)

AutoCalibration Pinlessmodeinopenair

MeasurementindicationDigital,MoistureDropleticons(1,2,or3droplets)andaudibletone

with8levelsofintensityindicatinglowtohighmoisturereadings

Measurementranges PINMODE:5.0~50.0%(wood),1.4~33.0%(buildingmaterials);

PINLESSMODE:0.0~99.9%(forwoodandbuildingmaterials)

Resolution  0.1%

Accuracy(Pinmode) ±(3%+5digits)forambientconditions22oCto25oC(72oFto77oF)

Electrodepinlength0.3”(8mm)

ElectrodepintypeStainlesssteel.Integrated,replaceable

AutoPowerOFF Afterapprox.two(2)minutes

PowersupplyOne(1)9VBattery(rearcompartment)

Consumption<40mA

LowBatteryindicationBatterystatusiconappearsemptyorflashing

Operatingconditions5~45oC(41~113oF);80%RHmax.

Storageconditions0~50oC(32~122oF);85%RHmax.

Dimensions 170x65x30mm(6.7x2.6x1.2")

Weight120g(4.2oz.)withoutbattery



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

www.extech.com

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