AEMC 6240 User manual

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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Micro-Ohmmeter Model 6240 3
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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4 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 5
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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6 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 7
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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8 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 9
2.4 Control Features
°C°F
mV
mA
°
>
<
V
µmΩ
AVG
OBJ. TEST
MEMMRCLR
P
HOLD
COM
DC
AC
2nd
I
+I
_
1
7
8
6
4
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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