AEMC 6240 Manuel utilisateur

MICRO-OHMMETER 6240

ENGLISH User Manual

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Statement of Compliance

Chauvin Arnoux®, Inc. d.b.a. AEMC®Instruments

certiﬁes that this instrument has been calibrated

using standards and instruments traceable to

international standards.

We guarantee that at the time of shipping your

instrument has met its published speciﬁcations.

An NIST traceable certiﬁcate may be

requested at the time of purchase, or obtained

by returning the instrument to our repair and

calibration facility, for a nominal charge.

The recommended calibration interval for this

instrument is 12 months and begins on the date of

receipt by the customer. For recalibration, please

use our calibration services. Refer to our repair

and calibration section at

Serial #: ________________________________

Catalog #: 2129.80

Model #: 6240

Please ﬁll in the appropriate date as indicated:

Date Received: _________________________________

Date Calibration Due: _______________________

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Table of Contents

1. INTRODUCTION ................................................................................. 4

1.1 International Electrical Symbols ................................................5

1.2 Definition ofMeasurementCategories .....................................5

1.3 ReceivingYourShipment ..........................................................5

1.4 OrderingInformation .................................................................6

1.4.1 AccessoriesandReplacementParts ............................6

2. PRODUCT FEATURES......................................................................... 7

2.1 Description ................................................................................7

2.2 Applications ..............................................................................8

2.3 KeyFeatures ............................................................................8

2.4 ControlFeatures .......................................................................9

2.5 ButtonFunctions .....................................................................10

2.6 DisplaySymbols .....................................................................11

3. SPECIFICATIONS............................................................................. 12

3.1 Electrical .................................................................................12

3.2 Mechanical .............................................................................. 13

3.3 Environmental .........................................................................14

3.4 Safety ...................................................................................... 14

4. OPERATION..................................................................................... 15

4.1 PrecautionsBeforeUse .......................................................... 15

4.2 InstrumentConfiguration (SET-UPmode) ..............................15

4.3 ResistanceMeasurements .....................................................16

4.3.1 MeasurementReadings .............................................. 17

4.3.2 ConnectionsandReadings ......................................... 17

4.3.3 Test Lead Connection .................................................18

4.4 RepetitiveMeasurements .......................................................18

4.5 MeasuringVeryLowResistance ............................................19

4.6 AutomaticRecording ..............................................................20

4.7 StoringResultsintoMemory ...................................................21

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4.8 RecallingResultsfromMemory .............................................. 22

4.9 ErasingMeasurementsfromMemory .....................................23

4.9.1 ErasingSelectedMeasurements ................................23

4.9.2 ErasingAllMeasurements ..........................................23

5. DATAVIEW®SOFTWARE................................................................... 24

5.1 InstallingDataView® ................................................................24

5.2 ConnectingtheInstrumenttoyourComputer ......................... 28

5.3 OpeningtheMicro-ohmmeterControlPanel ..........................29

5.4 Configuring theInstrument .....................................................30

5.5 DownloadingStoredTests ......................................................31

5.6 Saving/ExportingDatatoaSpreadsheetorPDFFile ............32

5.6.1 SavingDatatoSpreadsheetfromControlPanel ........32

5.6.2 ExportingDatatoaPDFfromDataView® ...................32

6. TROUBLESHOOTING ........................................................................ 33

6.1 ErrorMessages ......................................................................33

6.1.1 VoltagePresent ..........................................................33

6.1.2 Overrange ...................................................................34

6.1.3 NoisyMeasurement ....................................................34

6.1.4 Overheating ................................................................34

7. MAINTENANCE................................................................................ 35

7.1 Warning..................................................................................35

7.2 Cleaning ..................................................................................35

7.3 Charging/RechargingtheBattery ...........................................36

7.4 BatteryandFuseReplacement ..............................................37

RepairandCalibration ....................................................................38

TechnicalandSalesAssistance ......................................................38

Limited Warranty .............................................................................39

WarrantyRepairs ............................................................................39

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Micro-Ohmmeter Model 6240

CHAPTER 1

INTRODUCTION

WARNING

Thesesafetywarningsareprovidedtoensurethesafetyof

personnelandproperoperationoftheinstrument.

• Thisinstrumentisprotectedfromaccidentalvoltagesofnot

morethan50VwithrespecttoearthinmeasurementCat-

egoryIII.

• Donotattempttoperformanytestswiththisinstrumentuntil

youhavereadtheusermanual.

• Testsaretobecarriedoutonde-energizedcircuitsonly!

Never connect the unit to a live circuit.

• Makesurethatnoneoftheinputterminalsareconnected

andthattheswitchissettoOFFbeforepluggingintheAC

powertorechargethebatteryoftheinstrument.

• Makesuretheinternalbatteryisfullychargedpriortotesting.

Iftheinstrumenthasbeenleftunusedforseveralmonths,

rechargethebattery.

• Ifthecaseneedscleaning,donotuseanyalcoholoroil

basedcleaners.Preferablyusesoapywaterwithadamp

clothorsponge.Donotimmersethe6240micro-ohmmeter

inwater.

• Useconnectionaccessoriesofwhichtheovervoltagecat-

egoryandtheservicevoltagearegreaterthanorequalto

thoseofthemeasuringinstrument(50VCATIII).Useonly

accessoriesthatcomplywithsafetystandards(IEC61010-2-

031).

• Thetestleadsandmeasuringwiresmustbeingood

conditionandshouldbereplacedifthereisanyevidenceof

deterioration(insulationsplit,burnt,etc.).

•Troubleshootingandmetrologicalverification procedures

mustonlybeperformedbyqualified approvedpersonnel,or

thefactory.

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Micro-Ohmmeter Model 6240

1.1 International Electrical Symbols

Signiﬁes that the instrument is protected by double or reinforced insulation.

This symbol on the instrument indicates a WARNING and that the operator must refer

to the user manual for instructions before operating the instrument. In this manual,

the symbol preceding instructions indicates that if the instructions are not followed,

bodily injury, installation/sample and/or product damage may result.

Risk of electric shock. The voltage at the parts marked with this symbol may

be dangerous.

When disposed of, this product must be sorted for the recycling of electrical

and electronic equipment in accordance with WEEE directive 2002/96/EC.

1.2 Deﬁnition of Measurement Categories

CAT II: Formeasurementsperformedoncircuitsdirectlyconnectedto

theelectricaldistributionsystem.Examplesaremeasurements

onhouseholdappliancesorportabletools.

CAT III:Formeasurementsperformedinthebuildinginstallationat

thedistributionlevelsuchasonhardwiredequipmentin

fixed installationandcircuitbreakers.

CAT IV: Formeasurementsperformedattheprimaryelectricalsupply

(<1000V)suchasonprimaryovercurrentprotectiondevices,

ripplecontrolunits,ormeters.

1.3 Receiving Your Shipment

Uponreceivingyour shipment,makesurethatthecontentsareconsistent

withthepackinglist.Notifyyourdistributorofanymissingitems.Ifthe

equipmentappearstobedamaged,file aclaimimmediatelywiththe

carrierandnotifyyourdistributoratonce,givingadetaileddescriptionof

anydamage.Savethedamagedpackingcontainertosubstantiateyour

claim.

NOTE: Charge the instrument fully before use.

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Micro-Ohmmeter Model 6240

1.4 Ordering Information

Micro-ohmmeter Model 6240 ............................................ Cat. #2129.80

Includes extra large tool bag, set of two 10ft Kelvin clips (10A - Hippo), set of two 10ft

Kelvin probes (1A - Spring Loaded), optical USB cable, US 115V power cord, two spare

fuses (12.5A), NiMH rechargeable battery pack, and USB stick supplied with product user

manual and DataView®software.

1.4.1 Accessories and Replacement Parts

Kelvinclips(10A-Hippo),10ftcolor-codedleads

withspadelugterminations ................................................. Cat. #1017.84

Kelvinclips(10A-Hippo),20ftcolor-codedleads

withspadelugterminations ................................................. Cat. #2118.70

KelvinProbes(1A-SpringLoaded),10ftwith4mmbanana

plugtermination(includessetof5forkterminals) ............... Cat. #2118.73

KelvinProbes(1A-SpringLoaded),20ftwith4mmbanana

plugtermination(includessetof5forkterminals) ............... Cat. #2118.74

KelvinProbesPistolGrip10ft(10A)SpringLoaded........... Cat. #2118.75

KelvinProbes10ft(10A)SpringLoaded ........................... Cat. #2118.77

KelvinClips10ft(1-10A) ..................................................... Cat. #2118.79

KelvinClips20ft(1-10A) ..................................................... Cat. #2118.80

Thermo-HygrometerModelCA846 .....................................Cat. #2121.24

OpticalUSBCable...............................................................Cat. #2135.41

ReplacementBattery6.5V,8.5AH ....................................... Cat. #2129.91

Fuse,setof5,12.5A/500V,6.3x32mm ............................. Cat. #2129.92

ExtraLargeClassicToolBag ..............................................Cat. #2133.73

Inverter–12VDCto120VAC200Wattforvehicleuse ......... Cat. #2135.43

115VPowerCordUS ..........................................................Cat. #5000.14

KelvinProbesPistolGrip20ft(10A)SpringLoaded........... Cat. #2118.76

KelvinProbes20ft(10A)SpringLoaded ........................... Cat. #2118.78

KelvinClips25ft(200A - Hippo) ......................................... Cat. #2129.72

KelvinClips50ft(200A - Hippo) ......................................... Cat. #2129.73

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Micro-Ohmmeter Model 6240

CHAPTER 2

PRODUCT FEATURES

2.1 Description

TheMicro-ohmmeterModel6240isusedtoperformlowresistance

measurementsfrom5μΩ to 400Ω.Therearesixrangeswithtestcurrents

from10mAto10A.

Thefrontendofthemicro-ohmmeteremploysafour-wireKelvinconfigu-

ration,whicheliminatestestleadresistanceforameasurementaccuracy

of0.25%.Abuilt-incircuitfilters outACsignals.

TheMicro-ohmmeterModel6240ispackagedinasealedfield casewell

suitedforshopandfield use.Powerissuppliedbyalong-lifeNiMH

batterypackwithabuilt-inrecharger(110/220V).

Thelarge,easy-to-readliquidcrystaldisplayis2.25x4.00".Itdisplaysthe

valueofresistance,currentorvoltagetest,polarityandbatterycharge.

Foroperatorsafetyandinstrumentprotection,themicro-ohmmeterisfuse

protectedattheinputs.Onefuse,accessiblefromthefrontpanel,protects

againststoredenergyininductiveloads.

Enhancedinternalcircuitryprotectsagainstpossibleinductivekick-

backwhenthecurrentisshutoff.

Abuilt-inthermalswitchprotectsthemicro-ohmmeteragainstoverheating

onthe10Arangewhenincontinuoususe.

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Micro-Ohmmeter Model 6240

2.2 Applications

Someofthemorepopularandmostfrequentusesofthemicro-ohmmeter

areinapplicationsfor:

• Checkingmetalliccoatingresistance,especiallyinaeronautics

• Groundconnectionsandcontinuitymeasurement

• Resistancemeasurementsonmotorsandsmalltransformers

• Contactresistancemeasurementsonbreakersandswitches

• Componentmeasurement

• Electricalcableresistancemeasurement

• Mechanicalbondtests

• Wire to terminal connections

• Aircraftandrailbonds

2.3 Key Features

• Measuresfrom5µΩ to 400Ω

• Testcurrentselectionfrom10mAto10A

• Manualtemperaturecompensation(withDataView®software)

• Frontpanelpolarityreversefunction

• Storesupto99testresults

• Operatorsafetybyautomaticdischargeofresidualchargeonthe

equipmentundertest

• Instantaneous,continuousormultipletestoperation

• Autostoreofmultipletestresults

• Internal,rechargeablebatteriesconductupto850,10Atests

• Abuilt-inbatterypackrechargerrechargesthebatteriesby

connectingtotheACline(110V-230V,50/60Hz)usingastandard

line cord

• 4-Wiremeasurementwithautomaticcompensationof

undesirablevoltagesandleadresistance

• Largemulti-functionbacklitdisplay

• Directdisplayofthemeasurementwithunits,rangeandtest

current

• Rugged,sealedcase

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Micro-Ohmmeter Model 6240

2.4 Control Features

°C°F

µmΩ

AVG

OBJ. TEST

MEMMRCLR

HOLD

COM

2nd

235

Figure 2-1

1. Kelvininputterminals

2. AClinerechargingreceptacle

3. Outputfuse-12.5A,500V,6x32mm

4. Largemulti-linebacklitliquidcrystaldisplay(see§2.6)

5. Opticalinterfaceconnectorforconnectiontoacomputer

6. Rangeselectionswitch

7. Start/Stopbutton

8. Program/functionbuttons(see§2.5)

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