AEMC 6240 Manuel utilisateur

MICRO-OHMMETER 6240

ENGLISH User Manual

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 www.aemc.com.

Serial #: ________________________________

Catalog #: 2129.80

Model #: 6240

Please ﬁll in the appropriate date as indicated:

Date Received: _________________________________

Date Calibration Due: _______________________

Chauvin Arnoux®, Inc.

d.b.a AEMC®Instruments

www.aemc.com

Table of Contents

1. INTRODUCTION............................................................................... 3

1.1 International Electrical Symbols................................................4

1.2 DenitionofMeasurementCategories .....................................4

1.3 ReceivingYourShipment..........................................................4

1.4 OrderingInformation.................................................................5

1.4.1 AccessoriesandReplacementParts............................5

2. PRODUCT FEATURES ...................................................................... 6

2.1 Description................................................................................6

2.2 Applications ..............................................................................7

2.3 KeyFeatures ............................................................................7

2.4 ControlFeatures .......................................................................8

2.5 ButtonFunctions.......................................................................9

2.6 DisplaySymbols .....................................................................10

3. SPECIFICATIONS........................................................................... 11

3.1 Electrical .................................................................................11

3.2 Mechanical..............................................................................12

3.3 Environmental.........................................................................13

3.4 Safety......................................................................................13

4. OPERATION .................................................................................. 14

4.1 PrecautionsBeforeUse..........................................................14

4.2 InstrumentConguration(SET-UPmode) ..............................14

4.3 ResistanceMeasurements .....................................................15

4.3.1 MeasurementReadings..............................................16

4.3.2 ConnectionsandReadings.........................................16

4.3.3 Test Lead Connection .................................................17

4.4 RepetitiveMeasurements .......................................................17

4.5 MeasuringVeryLowResistance ............................................18

4.6 AutomaticRecording ..............................................................19

4.7 StoringResultsintoMemory...................................................20

Micro-Ohmmeter Model 6240

4.8 RecallingResultsfromMemory..............................................21

4.9 ErasingMeasurementsfromMemory.....................................22

4.9.1 ErasingSelectedMeasurements................................22

4.9.2 ErasingAllMeasurements ..........................................22

5. DATAVIEW®SOFTWARE ................................................................ 23

5.1 Introduction .............................................................................23

5.2 InstallingDataView®................................................................23

5.3 ConnectingtheInstrumenttoyourComputer.........................27

5.4 OpeningtheMicro-ohmmeterControlPanel ..........................28

5.5 ConguringtheInstrument .....................................................29

5.6 DownloadingStoredTests ......................................................30

5.7 Saving/ExportingDatatoaSpreadsheetorPDFFile ............31

5.7.1 SavingDatatoaSpreadsheet....................................31

5.7.2 ExportingDatatoaPDFfromDataView®...................31

6. TROUBLESHOOTING ...................................................................... 32

6.1 ErrorMessages ......................................................................32

6.1.1 VoltagePresent ..........................................................32

6.1.2 Overrange...................................................................33

6.1.3 NoisyMeasurement....................................................33

6.1.4 Overheating ................................................................33

MAINTENANCE ................................................................................... 34

7.1 Warning...................................................................................34

7.2 Cleaning..................................................................................34

7.3 Charging/RechargingtheBattery ...........................................35

7.4 BatteryandFuseReplacement ..............................................36

RepairandCalibration...........................................................................37

TechnicalandSalesAssistance ............................................................37

Limited Warranty ...................................................................................38

WarrantyRepairs...................................................................................38

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 verication procedures

mustonlybeperformedbyqualied,approvedpersonnel,or

thefactory.

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. I: Formeasurements on circuits notdirectlyconnectedto theAC

supply wall outlet such as protected secondaries, signal level,

andlimitedenergycircuits.

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 xed

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equip-

mentappearstobedamaged,le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.

Micro-Ohmmeter Model 6240

1.4 Ordering Information

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

Includes set of two 10ft Kelvin clips (10A - Hippo), NiMH rechargeable battery

pack, optical USB cable, US 115V power cord, one pad of measurement results

forms, DataView®software, extra large tool bag, two spare fuses (12.5A), product

warranty and registration card and a user manual.

1.4.1 Accessories and Replacement Parts

Kelvinclips(1A),10ft color-coded leads

withbananaplugterminations.............................................Cat. #1017.83

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

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

MeasurementResultForms,replacementsetoftwo.......... Cat. #2129.94

Order Accessories and Replacement Parts Directly Online

Check our Storefront at www.aemc.com/store for availability

Micro-Ohmmeter Model 6240

CHAPTER 2

PRODUCT FEATURES

2.1 Description

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

measurementsfrom1μΩto 400Ω.Therearesixrangeswithtestcurrents

from10mAto10A.

Thefrontendofthemicro-ohmmeteremploysafour-wireKelvincongu-

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

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

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

suitedforshopandeld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 kickback

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.

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1µ• Ωto 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•

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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