ENGLISH User Manual - AEMC · 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

MICRO-OHMMETER 6240

E N G L I S H User Manual

NOTE: For instruments with serial numbers lower than 116339SEDV, terminals C1 and P1 are red, and C2 and P2 are black

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® Instrumentswww.aemc.com

Table of Contents

1. INTRODUCTION ................................................................................. 41.1 International Electrical Symbols ................................................51.2 DefinitionofMeasurementCategories .....................................51.3 ReceivingYourShipment ..........................................................51.4 OrderingInformation .................................................................6

1.4.1 AccessoriesandReplacementParts ............................6

2. PRODUCT FEATURES ......................................................................... 72.1 Description ................................................................................72.2 Applications ..............................................................................82.3 KeyFeatures ............................................................................82.4 ControlFeatures .......................................................................92.5 ButtonFunctions .....................................................................102.6 DisplaySymbols .....................................................................11

3. SPECIFICATIONS ............................................................................. 123.1 Electrical .................................................................................123.2 Mechanical ..............................................................................133.3 Environmental .........................................................................143.4 Safety ......................................................................................14

4. OPERATION ..................................................................................... 154.1 PrecautionsBeforeUse ..........................................................154.2 InstrumentConfiguration(SET-UPmode) ..............................154.3 ResistanceMeasurements .....................................................16

4.3.1 MeasurementReadings ..............................................174.3.2 ConnectionsandReadings .........................................174.3.3 Test Lead Connection .................................................18

4.4 RepetitiveMeasurements .......................................................184.5 MeasuringVeryLowResistance ............................................194.6 AutomaticRecording ..............................................................204.7 StoringResultsintoMemory ...................................................21

Micro-Ohmmeter Model 6240 3

4.8 RecallingResultsfromMemory ..............................................224.9 ErasingMeasurementsfromMemory .....................................23

4.9.1 ErasingSelectedMeasurements ................................234.9.2 ErasingAllMeasurements ..........................................23

5. DATAVIEW® SOFTWARE ................................................................... 245.1 InstallingDataView® ................................................................245.2 Micro-ohmmeterControlPanel ...............................................26

6. TROUBLESHOOTING ........................................................................ 276.1 ErrorMessages ......................................................................27

6.1.1 VoltagePresent ..........................................................276.1.2 Overrange ...................................................................286.1.3 NoisyMeasurement ....................................................286.1.4 Overheating ................................................................28

7. MAINTENANCE ................................................................................ 297.1 Warning..................................................................................297.2 Cleaning ..................................................................................297.3 Charging/RechargingtheBattery ...........................................307.4 BatteryandFuseReplacement ..............................................31RepairandCalibration ....................................................................32TechnicalandSalesAssistance ......................................................32Limited Warranty .............................................................................33WarrantyRepairs ............................................................................33

4 Micro-Ohmmeter Model 6240

CHAPTER 1

INTRODUCTION

WARNING These safety warnings are provided to ensure the safety ofpersonnelandproperoperationoftheinstrument.• Thisinstrumentisprotectedfromaccidentalvoltagesofnot

more than50Vwith respect toearth inmeasurementCat-egoryIII.

• Donotattempttoperformanytestswiththisinstrumentuntilyouhavereadtheusermanual.

• 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 connectedandthattheswitchissettoOFFbeforepluggingintheACpowertorechargethebatteryoftheinstrument.

• Makesuretheinternalbatteryisfullychargedpriortotesting.If the instrumenthasbeen leftunused forseveralmonths,rechargethebattery.

• If the case needs cleaning, do not use any alcohol or oilbased cleaners. Preferably use soapy water with a dampclothorsponge.Donotimmersethe6240micro-ohmmeterinwater.

• Use connection accessories of which the overvoltage cat-egoryand theservicevoltagearegreater thanorequal tothoseof themeasuring instrument (50VCATIII).Useonlyaccessoriesthatcomplywithsafetystandards(IEC61010).

• The test leads and measuring wires must be in goodconditionandshouldbereplacedifthereisanyevidenceofdeterioration(insulationsplit,burnt,etc.).

• Troubleshooting and metrological verification proceduresmustonlybeperformedbyqualified,approvedpersonnel,orthefactory.


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 CategoriesCAT IV: For measurements performed at the primary electrical supply

(<1000V) such as on primary overcurrent protection devices,ripplecontrolunits,ormeters.

CAT III: For measurements performed in the building installation atthe distribution level such as on hardwired equipment in fixedinstallationandcircuitbreakers.

CAT II: Formeasurements performed on circuits directly connected totheelectricaldistributionsystem.Examplesaremeasurementsonhouseholdappliancesorportabletools.

1.3 Receiving Your ShipmentUponreceivingyourshipment,makesurethatthecontentsareconsistentwiththepackinglist.Notifyyourdistributorofanymissingitems.Iftheequip-mentappearstobedamaged,fileaclaimimmediatelywiththecarrierandnotifyyourdistributoratonce,givingadetaileddescriptionofanydamage.Savethedamagedpackingcontainertosubstantiateyourclaim.

NOTE: Charge the instrument fully before use.


1.4 Ordering Information

Micro-ohmmeter Model 6240 ............................................Cat. #2129.80Includes 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 PartsKelvinclips(10A-Hippo),10ftcolor-codedleadswithspadelugterminations .................................................Cat. #1017.84Kelvinclips(10A-Hippo),20ftcolor-codedleadswithspadelugterminations ................................................. Cat. #2118.70KelvinProbes(1A-SpringLoaded),10ftwith4mmbananaplugtermination(includessetof5forkterminals) ............... Cat. #2118.73KelvinProbes(1A-SpringLoaded),20ftwith4mmbananaplugtermination(includessetof5forkterminals) ............... Cat. #2118.74KelvinProbesPistolGrip10ft(10A)SpringLoaded........... Cat. #2118.75KelvinProbesPistolGrip20ft(10A)SpringLoaded........... Cat. #2118.76KelvinProbes10ft(10A)SpringLoaded ........................... Cat. #2118.77KelvinProbes20ft(10A)SpringLoaded ............................ Cat. #2118.78KelvinClips10ft(1-10A) ..................................................... Cat. #2118.79KelvinClips20ft(1-10A) ..................................................... Cat. #2118.80 Thermo-HygrometerModelCA846 .....................................Cat. #2121.24OpticalUSBCable...............................................................Cat. #2135.41Battery–ReplacementNiMH6V9000mAH forModels6240&6250 ......................................................Cat. #2129.91Fuse,setof5,12.5A/500V,6.3x32mm .............................Cat. #2129.92ExtraLargeClassicToolBag ..............................................Cat. #2133.73Inverter–12VDCto120VAC200Wattforvehicleuse .........Cat. #2135.43115VPowerCordUS ..........................................................Cat. #5000.14

Order Accessories and Replacement Parts Directly OnlineCheck our Storefront at www.aemc.com/store for availability


CHAPTER 2

PRODUCT FEATURES

2.1 DescriptionThe Micro-ohmmeter Model 6240 is used to perform low resistancemeasurementsfrom5μΩ to 400Ω.Therearesixrangeswithtestcurrentsfrom10mAto10A.

Thefrontendofthemicro-ohmmeteremploysafour-wireKelvinconfigu-ration,whicheliminatestestleadresistanceforameasurementaccuracyof0.25%.Abuilt-incircuitfiltersoutACsignals.

TheMicro-ohmmeterModel6240ispackagedinasealedfieldcasewellsuitedforshopandfielduse.Powerissuppliedbyalong-lifeNiMHbatterypackwithabuilt-inrecharger(110/220V).

Thelarge,easy-to-readliquidcrystaldisplayis2.25x4.00".Itdisplaysthevalueofresistance,currentorvoltagetest,polarityandbatterycharge.

Foroperatorsafetyandinstrumentprotection,themicro-ohmmeterisfuseprotectedattheinputs.Onefuse,accessiblefromthefrontpanel,protectsagainststoredenergyininductiveloads.

Enhanced internal circuitry protects against possible inductive kickbackwhenthecurrentisshutoff.

Abuilt-inthermalswitchprotectsthemicro-ohmmeteragainstoverheatingonthe10Arangewhenincontinuoususe.


2.2 ApplicationsSomeofthemorepopularandmostfrequentusesofthemicro-ohmmeterareinapplicationsfor:

• Checkingmetalliccoatingresistance,especiallyinaeronautics• Groundconnectionsandcontinuitymeasurement• Resistancemeasurementsonmotorsandsmalltransformers• Contactresistancemeasurementsonbreakersandswitches• Componentmeasurement• Electricalcableresistancemeasurement• Mechanicalbondtests• Wire to terminal connections• Aircraftandrailbonds

2.3 Key Features• Measuresfrom5µΩ to 400Ω• Testcurrentselectionfrom10mAto10A• Manualtemperaturecompensation(withDataView®software)• Frontpanelpolarityreversefunction• Storesupto99testresults• Operatorsafetybyautomaticdischargeofresidualchargeonthe

equipmentundertest• Autostoreofmultipletestresults• Internal,rechargeablebatteriesconductupto850,10Atests• Abuilt-inbatterypackrechargerrechargesthebatteriesby

connectingtotheACline(110V-230V,50/60Hz)usingastandard line cord

• 4-Wiremeasurementwithautomaticcompensationof undesirablevoltagesandleadresistance

• Largemulti-functionbacklitdisplay• Directdisplayofthemeasurementwithunits,rangeandtest

current• Rugged,sealedcase


2.4 Control Features

°C°FmVmA

°

><

VµmΩ

AVG

OBJ. TEST

MEMMRCLRP

HOLD

COM

DCAC

2nd

I+I_

1

7

8

6

42 3 5

Figure 2-1

1. Kelvininputterminals

2. AClinerechargingreceptacle

3. Outputfuse-12.5A,500V,6x32mm

4. Largemulti-linebacklitliquidcrystaldisplay(see§2.6)

5. Opticalinterfaceconnectorforconnectiontoacomputer

6. Rangeselectionswitch

7. Start/Stopbutton

8. Program/functionbuttons(see§2.5)


2.5 Button Functions

MEM Stores the measurement at an address identified by an object number (OBJ) and a test number (TEST).Two presses on this button are required, one to select the location (use theandbuttons to change the location) and another to store the measurement.

MR Retrieves stored data except for the OFF and SET-UP positions (this function is independent of the selector setting of the switch). Data is viewed using theandbuttons.

± I Reverses the direction of the current and displays the average.

DISPLAY Displays the current or voltage on the terminals.

AUTO>2s Activates automatic recordings.

Used in the SET-UP and memory mode, selects a function or incre-ments a flashing parameter.

Used in the SET-UP and memory mode, accesses the function to be modified.

CLR Erases the memory


2.6 Display SymbolsThedisplayincorporatestwolinesofcharacterstodisplaytestresults,aswellasalibraryofsymbolstoassisttheoperatorindeterminingconditionsataglance.ThesymbolsthatcanappearareshowninFigure2-2.

°C°FmVmA

°

><

VµmΩ

AVG

OBJ. TEST

MEMMRCLRP

HOLD

COM

DCAC

2nd

I+I_

Figure 2-2

Indicates the measurement is noisy; accuracy is not guaranteed

Indicates the battery charge condition; the segments represent energy

Indicates that power down is deactivated

Not used

MEM Displayed measurement about to be stored in memory

MR Memory recall

CLR Indicates the memory is being erased

Indicates internal overheating

+ I Indicates the direction of current

- I Indicates the direction of current

Indicates that a measurement has been stopped

OBJ. First position locator for data stored in memory

TEST Second position locator for data stored in memory

°C / °F Not used

Memory utilization indicator

AVG Displays average

Not used

> Indicates an overrange

R(+I)+R(-I)2


CHAPTER 3

SPECIFICATIONS

3.1 ElectricalSpecifications are given for an ambient temperature of 23°C ± 3°C, rela-tive humidity of 45 to 55%, supply voltage of 6V ± 0.2V and magnetic field of <40A/m.

RESISTANCE

Measurement Range

5.0 to 3999µΩ

4.0 to39.99mΩ

40.0 to 399.9mΩ

400 to 3999mΩ

4.0 to39.99Ω

40.0 to399.9Ω

Resolution 1µΩ 10µΩ 100µΩ 1mΩ 10mΩ 100mΩ

Accuracy ± 0.25% ± 2ct

Measurement current

10.2A ± 2% (1)

1.02A ± 2%

102mA ± 2%

10.2mA ± 2% (2)

Open voltage 4 to 6V

Inductance 0.5H Max

(1) With nominal value of 10.2A, the measurement current is at least 10A whatever the charge condition of the battery.(2) The current is 10mA only up to 300Ω. If the battery is low, it can fall to as low as 8mA.

VOLTAGE MEASUREMENT INDICATION

Measurement Range

0.01 to3.999mV

4.0 to39.99mV

40.0 to399.9mV

0.40 to3.999V

4.0 to4.70V

Resolution 1µV 10µV 100µV 1mV 10mV

CURRENT MEASUREMENT INDICATION

Measurement Range

5.0 to 39.99mA

40.0 to399.9mA

0.40 to3.999A

4.0 to 11.00A

Resolution 10µA 100µA 1mA 10mA


Influences on the Resistance Measurement

Quantities of Influence Range of useVariation of the measurement

Typical Maximum

Temperature -10 to +55°C 0.1% /10°C 0.5% /10 °C + 2cts

Relative Humidity 10 to 85% RH @ 45°C 0.1 % 0.5% + 2cts

Supply Voltage 5 to 7V 2cts 0.2% / V + 2cts

Series Mode Rejection, 50/60Hz*

U (AC) = (R measured x I measurement)

< 0.2% 2% + 1ct

Common Mode Rejection, 50/60Hz AC

0 to 50 V AC > 80 dB > 60 dB

*Example: If the measured resistance is 1mΩ and the measurement current is 10A, an alternating voltage of 1mV RMS in series with the resistance to be measured will induce an error of not more than 2%.

Power Supply:6V,8.5AhrechargeableNiMHbatterypackBattery Life: Rangedependent

Range Number of measurements*

10A 850

1A 3500

100mA 4500

10mA 5000

In Standby or Off battery life 4 to 6 months

*Established for measurements lasting 5s, every 25s.

3.2 Mechanical

Dimensions: 10.70x9.76x7.17"(272x248x182mm)

Weight: 10lbs(4.5kgapprox)

Case Protection: ABSplasticpolycarbonate:watertighttoIP64(cover closed),waterresistanttoIP53(coveropen).

Color: Safetyyellowcasewithgrayfaceplate


3.3 Environmental

Operating Temperature:14°to132°F(-10°to55°C),10to85%RH

Storage Temperature:-40°to158°F(-40°to70°C);10to90%RH

Altitude:<2000m

NOTE: For long-term storage (>1 year) with the battery installed, the stor-age range is -4 to 86°F (-20 to 30°C); 85% RH, otherwise the battery will deteriorate. For short-term storage (1 month) the temperature can reach up to 122°F (50°C).

3.4 SafetyElectricalsafetyasperEN61010,EN61557.Degreeofpollution:2Protection:MeasurementCATIII,50Vwithrespecttoearth,500Vdiffer-entialbetweenterminals,and300VCATIIonthechargerinput

Electromagnetic Compatibility:TheinstrumentsatisfiestheCEMandDBTdirectivesrequiredfortheCEmarkingandproductstandardEN61326-1(Ed.97)+A1(Ed.98)Emissions in residential environmentImmunityinindustrialenvironment

*Speci ications are subject to change without notice


CHAPTER 4

OPERATION

NOTE: Charge the instrument fully before use.

4.1 Precautions Before Use • Never use test leadsormeasuringwires if there isanyevidenceof

deterioration(insulationsplit,burnt,etc).• Never exceedthesafetyvaluesindicatedinthespecifications.• Never connecttheunittoalivecircuit.• Never disconnecttheconnectionwiresbeforethe icondisappears

fromthedisplay.

4.2 Instrument Configuration (SET-UP mode)TheSET-UPmodeisusedtomodifytheinstrument’sconfiguration.ThiscanalsobeperformedbyusingtheDataView® softwarethatcamewiththeinstrument.ToconfiguretheModel6240directlyfromthedisplay,turntherotaryswitchtotheSET-UPposition.Thefollowingscreenwillappear:

MEM

• The display order of the parameters that can be modified is:- Clear all memory (see§4.9.2)- Time- Date- AutomaticPowerOff- DisplayoftheInternalParameters(e.g.serialnumber,software

version,dateoflastcalibration,lightingofallsegmentsondisplay)


To display and modify parameters:• Tomovethroughparameters,pressthe button.• Tochange thedisplayedparametersorviewadditionalones,press

andholdthe button.

• Tomodifytheparameters,usethe button.

• Toaccept thechanges,pressandhold the button>2suntil thedisplaystopsblinking.

4.3 Resistance Measurements

WARNING: Before performing the resistance test, verify that the sample under test is not energized.

1. Cleanallsurfacesbeforeconnectingtestleads.2. Connectthetwoleadstothefourterminals,thenthetwoKelvinclips

totheobjecttobetested.3. Settherangeselectorswitchtothedesiredrangeforthetest.Ifthe

anticipated resistance is not known, begin with the highest range(400Ω) and successively lower the range selection until adequateresolutionisachieved.

4. PresstheSTART/STOPbuttontostartthemeasurement.

NOTE: The START/STOP needs to be pressed each time the range is changed. The range selection may be changed while the instrument is on.

HOLD

5. Press theSTART/STOP button again to stop themeasurement ordisconnect one of theKelvin clips.The lastmeasurementmade isdisplayedalongwiththe symbol.


NOTE: If the measurement was stopped by disconnecting a Kelvin clip, simply connect it to another object to start the next measurement; It is not necessary to press the START/STOP button.

6. Todisplaythevoltageontheterminalsoftheresistanceinsteadofthemeasurementcurrent,presstheDISPLAY key.

Current results are displayedbefore pressing DISPLAY button

Voltage results are displayedafter pressing DISPLAY button

4.3.1 Measurement ReadingsWhentestingresistivesamples,themeterreadingwillstabilizewithinthefirstfewhundredmilliseconds.Oninductiveloads(e.g.small transform-ers),themeasurementreadingmaytakefromseveralsecondstoafewminutestostabilizeanddependsgreatlyonthetypeofequipmentandtheimpedanceoftheequipmentundertest.

4.3.2 Connections and ReadingsTheModel6240generatesacurrent (I)from the internal voltage source (V). Avoltmeter measures the voltage dropVxat theKelvinprobecontactpoints tothe resistance tobemeasured (Rx)anddisplays the resistance measurement(Rx)directlyusingtheformulaRx=Vx/I.

The result is not affected by the otherresistances encountered in the currentloop (Ri, Rf, Rc), as long as the totalvoltagedropinducedacrossRx remains belowthevoltagesuppliedbythesourcewhichisbetween5to6V.Themaximumadmissible lead resistance level is Rf≈(V-Vx)/I.TheuseofKelvinprobeshelps,astheyeliminatetheeffectoftheleadresistance(Rf).

Ri Rf

Rf

Rf

RfC2

P2

P2

C1

Rc

Rx

Rc

V

IVx

+

Ri=UnitinternalresistanceRf = Lead resistanceRc = Contact resistanceRx=Resistancetobemeasured


4.3.3 Test Lead ConnectionThemeasurementleadsareconnectedusingthefourbindingpostsontheleftsideofthefrontpanelasshownbelow.ConnectthetworedleadstoterminalsP1andP2.Connectthetwoblackleads to terminals C1 and C2.

NOTE: For instruments with serial numbers lower than 116339SEDV, ter-minals C1 and P1 are red and C2 and P2 are black.

Anydropinthevoltageontheloadterminalsismeasuredbetweenthetwo“voltage”(V)leads,P1andP2.Thecurrentleads(C1andC2)candelivercurrentfrom10mAto10A.

UI

4.4 Repetitive Measurements1. ConnecttheKelvinclipstothefirstobject.PressSTART/STOP.

2. Disconnecttheclips.Themeasurementstopsandresultisdisplayed.

3. Connect the clips to the second object. Themeasurement restartsautomatically.Repeatasnecessary.

4. Afterthelastmeasurement,pressSTART/STOPagain.

NOTE: This operation is valid only if all of the objects to be measured have substantially the same value and all of the measurements are made in the same range.


4.5 Measuring Very Low ResistanceWhenmeasuringverylowresistivevaluesintheµΩrange,thepresenceofstrayDCcurrentsmayaffecttheaccuracyofthemeasurements.ThesecurrentscanbepresentduetoavarietyofreasonsincludingchemicalorthermalEMFinsamplesmadeofdissimilarmetals.

Youcaneliminatetheeffectsofthisbyreversingthedirectionofcurrentflow(seeexamplebelow)andusingtheaverageofforwardandreversereadings.

ThepresenceofACinterferenceinthesampleundertestmaycausethemeasuredvalueonthedisplaytofluctuate.Thisinterferencemaybecomemorenoticeableinthepresenceofstrongelectricfields.Theeffectsofthisinterferencemaybereducedbytwistingtheleadsaroundeachother.

1. Reversethedirectionofthecurrentbypressingthe±Ibuttonandtheinstrumentdisplaystheaverage:

R(+I)+R(-I)

RAVG = 2

2. TodisplaythevaluesR(+I)andR(-I),presstheDISPLAYbutton.

A

µ Ω

AVG

HOLD

I_+I

R(+I)+V

R(+I)-I

R(-I)-V

R(-I)

Press the DISPLAY button to cycle through the values


4.6 Automatic Recording1. Beforemakingmeasurements,presstheAUTO >2sbutton.

2. Whenthebuttonispressed,theMEMsymbolflashesandthesmalldisplayindicatesthefirstfreeOBJ : TESTnumber(e.g.01:01).Themaindisplayindicates .

3. Usethe buttontoswitchbetweentheOBJ and TESToption,thenusethe buttontochangethenumberofthetestorobject.

4. Whenfinished,presstheMEMbuttonfor>2s.Automaticrecordingisactivated(theMEMsymbolflashes).

OBJ. TEST

+I Use the arrow buttonsto change the valuesof the OBJ and TEST

When finished, pressthe MEM button for >2s

> 2s

MEM

5. PresstheSTART/STOPbuttontobeginmeasuring. Ateachnewmeasurement,thetestnumberisincrementedandthe

measurementisrecorded.

6. PresstheSTART/STOPbuttonagaintostopautomaticrecording.

µ Ω

OBJ. TEST

MEMP

HOLD

+I


4.7 Storing Results into MemoryDatastorageisorganizedintoobjects(OBJ),eachofwhichcancontainseveraltests(TEST).OBJcorrespondstotheobjecttestedandeachtestcorrespondstoameasurementmadeontheobject.Theinstrumentcanstore99measurements.

1. StartandStopameasurement(see§4.3).

2. PresstheMEMbutton.

3. Whenthebuttonispressed,theMEMsymbolflashesandthesmalldisplayindicatesthefirstfreeOBJ : TESTnumber(e.g.01:01).Themaindisplayindicates .

4. Usethe buttontoswitchbetweentheOBJ and TESToption,thenusethe buttontochangethenumberofthetestorobject.

5. Whenfinished,presstheMEMbuttonfor>2s.Themeasurement isstored.

OBJ. TEST

MEM

+I Use the arrow buttonsto change the valuesof the OBJ and TEST

When finished, pressthe MEM button for >2s

> 2s

6. Iftheuserselectsamemoryaddressthatisalreadyoccupied,appearsonthemainscreen.Tooverwritethelocation,presstheMEMbuttonfor>2s.


OBJ. TEST

MEM

+I

either> 2s

or

Indicates address is already occupied Overwrites the Exits withoutMemory Recording

Displayshownifmemoryis full: DisplayshownIfmemoryis empty:

OBJ. TEST

MEMP

2nd

+I

P

+I

MR

OBJ. TEST

4.8 Recalling Results from Memory

1. Makesurethereisnomeasurementinprogress.

2. PresstheMRbutton.

3. Usethe and buttonstoselectthedesiredOBJandTEST.

4. PresstheMRbuttonagaintoexitthememoryfunction.

Use the arrow buttonsto change the valuesof the OBJ and TEST


4.9 Erasing Measurements from Memory

4.9.1 Erasing Selected Measurements

1. PresstheCLRbutton.

2. Usethe and buttonstoselectthedesiredOBJandTEST.

3. PresstheCLRbuttonfor>2stodeletetheselectedrecord.

OBJ. TEST

MEM

+IUse the arrow buttons to selectthe desired OBJ and TEST

When finished, pressthe CLR button for >2s

> 2s µ Ω

OBJ. TEST

+I

CLR

4.9.2 Erasing All Measurements

1. TurntherotaryswitchtoSet-up.Thedefaultdisplayappears:

MEM

2. Press for>2s. willblink.

3. Press again. willdisplay.

4. Press againfor>2s.Allmeasurementsareerasedandthescreenreturnstothedefaultdisplay.


CHAPTER 5

DATAVIEW® SOFTWARE

5.1 Installing DataView®

DO NOT CONNECT THE INSTRUMENT TO THE PC BEFORE INSTALLING THE SOFTWARE AND DRIVERS.

When you purchase anAEMC instrument supported by DataView, thesoftware is includedaspartof theproductpackage.DataViewprogramfilesarestoredonaUSBstick.

NOTE:When installing, theusermusthaveAdministrativeaccessrightsduringtheinstallation.Theusersaccessrightscanbechangedafter the installation is complete.DataViewmustbe reinstalled foreachuserinamulti-usersystem.

1. InserttheDataViewthumbdriveintoanavailableUSBportonyourcomputer.IfAutorunisenabled,anAutoPlaywindowappearsonyourscreen.Click“Openfoldertoviewfiles”todisplaytheDataViewfolder.IfAutorunisnotenabledorallowed,useWindowsExplorertolocateandopentheUSBdrivelabeled“DataView.”

2. WhentheDataViewfolderisopen,findthefileSetup.exelocatedintherootdirectoryoftheUSBdrive,anddouble-clickittoruntheinstal-lationprogram.

3. TheDataViewsetupscreenappears. In theupper leftcornerof thescreen,choosethelanguageversionoftheSetupinterface.(AllSetupscreensanddialogswillimmediatelyappearintheselectedlanguage.)

Inthelowerleftcorneraretheavailableinstallationoptions.InadditiontotheDataViewsoftware,youcanselect“AdobeReader.”ThislinkstotheAdobewebsitewhereyoucandownloadthelatestversionofReader.ThisprogramisrequiredtoviewDataView.pdfdocuments.


TheoptionFirmwareUpgrades links to thewebsitewhereyoucancheckfornewfirmwareupdatesfortheinstrument.Finally,UserMan-ualsdisplaysalistof.pdffilescontainedintheUSBdrivethataccom-paniesDataView. (DataViewalsocomeswithaHelpsystemthat isinstalledwiththeprogramfiles.)

ToinstallDataView,selectDataViewintheOptionslistandclickInstall.

4. Select the language version of DataView youwant to install (Eng-lish,French,orSpanish) thenclickNext. (Bydefault, the languageselectedinstep3ishighlighted.)

5. Youarenowpromptedtoselectthesoftwareyouwanttoinstall.EachAEMCproductfamilyhasitsownspeciallydesignedControlPanel.IfyouareperformingaCompleteinstall,bydefaultallavailableControlPanelsareselected(acheckmarknexttotheControlPanelindicatesitisselected).ControlPanelstakeupdiskspaceonthecomputer;sounlessyouhaveother typesofAEMC instruments,we recommendthatyouselectMicroOhmmeteranddeselecttherest.YoushouldalsochecktheoptionDataViewCore,whichisarequirementifyouplantocreateDataViewreports.

AfteryoufinishselectinganddeselectingControlPanelsand/orData-ViewCore,clickNext.

6. TheSetupprogramnow informsyou that it is ready to installData-View.Ifyouwanttoreviewanyofyourpreviousselections,clickthePreviousbuttontoreturntoearlierscreens.Otherwise,clickInstalltobegininstallation.

7. The InstallShield program installs the selected software. If anearlier version of the software is already installed on your com-puter, for each selected program the InstallShield program will:(a) Ask you to confirm the installation of the program. Click Next.(b) Display a status bar indicating the progress of the installation.(c) Informyouwhentheprogramisinstalled.

ClickFinishtoinstallthenextselectedprogram.

Ifthesoftwareisnotinstalled(oriftheinstalledsoftwareisthesameversion as the selected software), the software is installed withoutrequestingconfirmation.

Whenallprogramsareinstalled,amessageappearsinformingyouofthis.ClickFinishtoreturntotheSetupscreen


8. You can now select additional Setup options to install (see step 3above).Whenfinished,clickExit.

9. TheDataViewfoldernowappearsonyourcomputerdesktop,withinwhich is theMicroOhmmeter icon and the icon(s) for any otherControlPanel(s)youhaveinstalled.

5.2 Micro-ohmmeter Control Panel

ClickingtheDataViewiconintheDataViewfolderonyourdesktopopensthecoreDataViewprogram.ClickingtheMicroOhmmeterControlPaneliconopenstheMicroOhmmeterControlPanel.

In general, core DataView features are for creating, viewing, editing,andstoringDataViewreports;while theControlPanel is forconnectingto, configuring, viewingmeasurements on, and downloading data fromtheinstrument.YoucanaccessallDataViewfeaturesthrougheithertheDataView icon or the Control Panel icon. For users who interact withmicro-ohmmeterinstruments,werecommendprimarilyusingtheControlPanel.However,therearesituationswhereusingthecoreDataViewiconmaybemoreconvenientforsomeusers,suchaswhenviewingmultiplearchivedreportsfromdifferentAEMCproductfamilies.For further information about using theMicroOhmmeter Control Panel,consulttheHelpsystemthatcomeswiththeproduct.AccessthisHelpbyclickingtheoptionHelpintheControlPanel’smenubaratthetopofthescreen..


CHAPTER 6

TROUBLESHOOTING

6.1 Error Messages

6.1.1 Voltage Present

Anerrormessagewillappearwhenanexternalvoltageispresentonthedevicebeingmeasured.(e.g.C1C2orC1P1).Beforeameasurementispossiblethevoltagemustberemovedfromthetestobject.

Avoltagegreaterthan20VappliedacrosstheC1-C2terminalwillcausetheFuseonthefrontpaneltoblow.(See§7.4forfusereplacement)


6.1.2 Overrange

The>symbolindicatesanoverrangecondition.Switchtoahighermea-surementrangeandrestartthemeasurementuntilthe>symbolnolongerappears.

A

> µ Ω

+I

This symbolindicates an

overrange

6.1.3 Noisy Measurement

The symbol indicatesnoiseinthemeasurement.Themeasurementaccuracyisnotguaranteed.

A

µ Ω

+I

This symbolindicates noisymeasurement

6.1.4 Overheating

Internal overheating canoccur if ameasurement in the10A range lastfor severalminutes.Nomeasurement is possible until the temperaturesymbol and indicationarenolongervisible.

° +I


CHAPTER 7

MAINTENANCE

Use only factory specified replacement parts.AEMC® will not be heldresponsible for anyaccident, incident, ormalfunction followinga repairdoneotherthanbyitsservicecenterorbyanapprovedrepaircenter.

7.1 Warning • Toavoidelectricalshock,donotattempttoperformanyservicing

unlessyouarequalifiedtodoso.

• Donotperformanyservicewhilethemicro-ohmmeterisonanycircuit.

• Toavoidelectricalshockand/ordamagetotheinstrument,donotgetwaterorotherforeignagentsintotheelectronicmodule.

• Makesuretheinternalbatteryisfullychargedpriortotesting.Iftheinstrumenthasbeenleftunusedforseveralmonths,rechargethebattery.

• Werecommendrechargingthemicro-ohmmetereverymonthtoensureafullbatterychargewhenused.

• When replacing the fuse, install only the fusewhich is a directreplacement.

7.2 Cleaning

WARNING: Disconnect the instrument from any source of electricity.

• If thecaseneedscleaning,donotuseanyalcoholoroilbasedcleaners. Preferably use soapy water with a damp cloth orsponge.

• Dry immediatelyaftercleaning.Avoidwaterpenetration into theelectronicmodule.

• Makesurethemicro-ohmmeterandallleadsaredrybeforefur-theruse.


7.3 Charging/Recharging the Battery

AC POWER SELECTION

TheModel6240mayberechargedfrom110to230VAC(50/60Hz).Theinstrumentincludesa110Vlinecord,whichprovidesthechargingvoltagefortherechargeablebattery.

CHARGING THE BATTERY

• TheModel6240shouldbechargedtoafullchargebeforeusingitforthefirsttime.

• Chargingtofullcapacitymaytakeupto6hoursforacompletelydischargedbattery.

• Ifthebatterysymbolshowsasanemptycell,thebatteryneedstoberecharged.

The battery will only charge in the OFF mode.• IntheONmode,thecharginghaltsandthebatterylevelindication

isshowninthebatterysymboltothetopleftofthedisplay.• IntheOFFmode,indicationisasdescribedinthechargingindica-

torsectionbelow.

ConnecttheModel6240to110VACusingthepowercordprovided(charg-ingstartsautomaticallyiftheinstrumentisintheOFFmode).

NOTE: Measurement can be obtained while the power cord is connected but the charging process will be stopped until the instrument is turned OFF again.

CHARGING INDICATORS

OFF Mode:• bAttonthesmalldisplayand###onthemaindisplay,signifies

fast charging in progress.Where ### is the percent of batterycharge(onlyintheOFFposition).

• bAttonthesmalldisplayandFULLonthemaindisplay,signifiesthat charging is complete.At this point a low charge current isappliedtomaintainthebatterycharge.


ON Mode:• bAttshownwheninstrumentisturnedonandbatteryislow.There

willbea5seconddelaythen4beepsbeforetheinstrumentshutsdown.

• bAtt shown during high current measurement indicates a lowbatterycondition(measurementwillbepossibleonlowercurrentrangeonly).

Battery Indicator Status Battery Charge (C)C>87.5%

87.5%>C>62.5%62.5%>C>37.5%37.5%>C>12.5%

12.5%>C

Blink C=0(batteryIndicatornotinitialized)Automaticshutdown C = 0

If the instrument is turned on and the battery voltage is >5V, then thenormaluseofthedeviceispermitted.

7.4 Battery and Fuse Replacement

NOTE: Make sure that no terminals are connected and that the switch is in the OFF position before removing the instrument from the case.

BATTERY

WARNING:Replacingthebatterycausesdatalossfrommemory.• Thebatteryshouldbereplacedbyanauthorizedrepairfacilityrec-

ognizedbyAEMC® Instruments.SeetheRepairandCalibrationsectionforreturninstructions.

• The battery is accessible using a Phillips Head screwdriver toremovethefourscrewsonthebottomsideofthecaseandpullingthechassisoutfromthetop.

FUSE• The fuse is locatedon the front panel between theC1andP1

inputterminals.• FuseF1, is a 6.3x32mm, fast acting, 12.5A/500V, low internal

resistance,protectingthecurrentsourcefromoutsidevoltagesonenergizedspecimens.


Repair and Calibration

Toensurethatyourinstrumentmeetsfactoryspecifications,werecommendthatitbescheduledbacktoourfactoryServiceCenteratone-yearintervalsforrecalibration,orasrequiredbyotherstandardsorinternalprocedures.

For instrument repair and calibration:Youmust contactourServiceCenter foraCustomerServiceAuthorizationNumber(CSA#).Thiswillensurethatwhenyourinstrumentarrives,itwillbetrackedandprocessedpromptly.PleasewritetheCSA#ontheoutsideoftheshipping container. If the instrument is returned for calibration,weneed toknowifyouwantastandardcalibration,oracalibrationtraceabletoN.I.S.T.(Includescalibrationcertificateplusrecordedcalibrationdata).

Ship To: ChauvinArnoux®,Inc.d.b.a.AEMC®Instruments 15 Faraday Drive Dover,NH03820USA Phone:(800)945-2362(Ext.360) (603)749-6434(Ext.360) Fax: (603)742-2346or(603)749-6309 E-mail:[email protected]

(Orcontactyourauthorizeddistributor)Costsforrepair,standardcalibration,andcalibrationtraceabletoN.I.S.T.areavailable.NOTE: You must obtain a CSA# before returning any instrument.

Technical and Sales Assistance

Ifyouareexperiencinganytechnicalproblems,orrequireanyassistancewiththeproperoperationorapplicationofyourinstrument,pleasecall,mail,faxore-mailourtechnicalsupportteam:

ChauvinArnoux®,Inc.d.b.a.AEMC®Instruments 200FoxboroughBoulevard Foxborough,MA02035USA Phone:(800)343-1391 (508)698-2115 Fax: (508)698-2118 E-mail:[email protected] www.aemc.com

NOTE: Do not ship Instruments to our Foxborough, MA address.


Limited Warranty

TheModel6240iswarrantedtotheownerforaperiodoftwoyearsfromthedateoforiginalpurchaseagainstdefectsinmanufacture.ThislimitedwarrantyisgivenbyAEMC®Instruments,notbythedistributorfromwhomitwaspur-chased.Thiswarrantyisvoidiftheunithasbeentamperedwith,abusedorifthedefectisrelatedtoservicenotperformedbyAEMC®Instruments.

Full warranty coverage and product registration is available on our website at www.aemc.com/warranty.html.

Please print the online Warranty Coverage Information for your records.

What AEMC® Instruments will do:Ifamalfunctionoccurswithinthewarrantyperiod,youmayreturntheinstrumenttousforrepair,providedwehaveyourwarrantyregistrationinformationonfileoraproofofpurchase.AEMC®Instrumentswill,atitsoption,repairorreplacethefaultymaterial.

REGISTER ONLINE AT: www.aemc.com

Warranty Repairs

What you must do to return an Instrument for Warranty Repair: First, request aCustomerServiceAuthorizationNumber (CSA#) by phoneorbyfaxfromourServiceDepartment(seeaddressbelow),thenreturntheinstrumentalongwith thesignedCSAForm.Pleasewrite theCSA#on theoutsideoftheshippingcontainer.Returntheinstrument,postageorshipmentpre-paidto:

Ship To: ChauvinArnoux®,Inc.d.b.a.AEMC®Instruments15FaradayDrive•Dover,NH03820USAPhone:(800)945-2362(Ext.360)

(603) 749-6434(Ext.360)Fax: (603)742-2346or(603)749-6309E-mail:[email protected]

Caution:Toprotectyourselfagainstin-transitloss,werecommendyouinsureyourreturnedmaterial.

NOTE: You must obtain a CSA# before returning any instrument.

02/20

99-MAN 100324 v27

Chauvin Arnoux®, Inc. d.b.a. AEMC® Instruments15FaradayDrive•Dover,NH03820USA•Phone:(603)749-6434•Fax:(603)742-2346

www.aemc.com

Documents

ENGLISH User Manual - AEMC · 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