Mastech MS5203 User manual

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Safety Safety Safety SafetyInformation Information Information Information................................................................................................................................................ ................................................................................................................................................ ................................................................................................................................................ ................................................................................................................................................1 111
Warning............................................................................................................................................................................................1
Warranty...........................................................................................................................................................................................1
Accessories......................................................................................................................................................................................2
Introduction Introduction Introduction Introduction........................................................................................................................................................... ........................................................................................................................................................... ........................................................................................................................................................... ...........................................................................................................................................................2 222
FrontPanel.......................................................................................................................................................................................2
DisplayScreen.................................................................................................................................................................................3
DisplayMessages.............................................................................................................................................................................5
Buttons.............................................................................................................................................................................................7
Rotaryswitch...................................................................................................................................................................................9
InputTerminal..................................................................................................................................................................................9
Function Function Function FunctionDescription Description Description Description............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. .............................................................................................................................................9 999
Power-UpOptions............................................................................................................................................................................9
AutomaticPowerOff.....................................................................................................................................................................10
HoldFuncion.................................................................................................................................................................................10
RelativeMeasurement...................................................................................................................................................................10
InsulationTestLock.......................................................................................................................................................................11
StoringTestData............................................................................................................................................................................11
ReadingTestData..........................................................................................................................................................................12
DeleteData.....................................................................................................................................................................................13
CompareFunction..........................................................................................................................................................................14
TimerFunction...............................................................................................................................................................................17
MAX/MIN/AVG...........................................................................................................................................................................19
DAR&PI......................................................................................................................................................................................19
Making Making Making MakingBasic Basic Basic BasicMeasurements Measurements Measurements Measurements............................................................................................................................. ............................................................................................................................. ............................................................................................................................. .............................................................................................................................20 20 20 20
MeasuringDCV oltage...................................................................................................................................................................20
MeasuringACV oltage................................................................................................................................................................21

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MeasuringResistance....................................................................................................................................................................22
InsulationTest................................................................................................................................................................................22
Replacing Replacing Replacing Replacingbattery battery battery battery................................................................................................................................................ ................................................................................................................................................ ................................................................................................................................................ ................................................................................................................................................24 24 24 24
Specifications Specifications Specifications Specifications....................................................................................................................................................... ....................................................................................................................................................... ....................................................................................................................................................... .......................................................................................................................................................25 25 25 25
Accuracy........................................................................................................................................................................................26

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Safety Safety Safety SafetyInformation Information Information Information
Thisstyleofdigitalmultimeterisdesignedandmanufacturedaccordingtothesafetyrequirementssetoutbythe
IEC61010-1standardsforelectronictestinstruments.Itsdesignandmanufactureisstrictlybasedontheprovisionsinthe
1000VCATⅢofIEC61010-1andtheStipulationof2-PollutionGrade.
Warning Warning Warning Warning
Toavoidpossibleelectricshockorpersonalinjury,followtheseguidelines:
�
UsetheMeteronlyasspecifiedinthismanualortheprotectionprovidedbytheMetermightbeimpaired.
�
DonotusetheMeterortestleadsiftheyappeardamaged,oriftheMeterisnotoperatingproperly.Ifindoubt,have
theMeterserviced.
�
Alwaysusetheproperterminal,switchposition,andrangeformeasurementsbeforeconnectingMetertocircuit
undertest.
�VerifytheMeter’soperationbymeasuringaknownvoltage.
�DonotapplymorethantheratedvoltageasmarkedontheMeter,betweentheterminalsorbetweenanyterminaland
earthground.
�
Usecautionwithvoltagesabove30Vacrms,42Vacpeak,or60Vdc.Thesevoltagesposeashockhazard.
�
Replacethebatteryassoonasthelowbatteryindicator()appears.
�Disconnectcircuitpoweranddischargeallhigh-voltagecapacitorsbeforetestingresistance,continuity,diodes,or
capacitance.
�DonotusetheMeteraroundexplosivegasorvapor.
�
Whenusingthetestleads,keepyourfingersbehindthefingerguards.
�
RemovetestleadsfromtheMeterbeforeopeningtheMetercaseorbatterydoor.
�NeveroperatetheMeterwiththecoverremovedorthebatterydooropen.
�
Complywithlocalandnationalsafetyrequirementswhenworkinginhazardouslocations.
�Useproperprotectiveequipment,asrequiredbylocalornationalauthoritieswhenworkinginhazardousareas.
�Useonlythereplacementfusespecifiedortheprotectionmaybeimpaired.
Warranty Warranty Warranty Warranty
Themeteriswarrantedtobefreefromdefectsinmaterialandworkmanshipundernormaluseandservice.The

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warrantyperiodisoneyearandbeginsonthedateofshipment.Parts,productrepairs,andservicesarewarrantedfor18
monthsexceptformisused,altered,neglected,contaminated,ordamagedbyaccidentorabnormalconditionsofoperation
orhandling.Thiswarrantydoesnotapplytofuses,disposablebatteries.
Accessories Accessories Accessories Accessories
Item Item Item ItemTestLeadsClipsBatteryAALR6Manual
QQQQuantity uantity uantity uantity2261
Introduction Introduction Introduction Introduction
Front Front Front FrontPanel Panel Panel Panel
Screen
Button
RotarySwitch
Button

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Display Display Display DisplayScreen Screen Screen Screen
Indicator Indicator Indicator IndicatorDescription Description Description Description
LowbatteryIndicateswhenitistimetoreplacethebattery.
Toavoidfalsereadings,whichcouldleadtopossibleelectricshockorpersonalinjury,
replacethebatteryassoonasthelowbatteryindicatorappears.
IndicatesatestlockwillbeappliedthenexttimeyoupressTestButtononthemeter,thetest
lockactstoholddownthebuttonuntilyoupressTestButtonagain.
Holdfunction,themeterdonotupdatedisplay.
Analog
Bar
Primary
Screen
Secondary
Screen

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Indicator Indicator Indicator IndicatorDescription Description Description Description
Comparefunctionisselected
Whencomparefunctionisselected,whenthemeasuringvaluebetweenupperlimitedvalue
andlowerlimitedvalue,displaythissign.
Comparefunctionisselected
Ininsulationtestmode,displaytheDARvalue
Ininsulationtestmode,displaythePIvalue
Timerfunctionisselected
Storefunctionisselected
V iewthememorydata,whenthedataisinvalid,display---
DCV oltagefunctionisselected
ACV oltagefunctionisselected
Ininsulationtestmode,testvoltageunit
Minus,Whenthemeasurevaluelowerthan0,displaythesign.
Greatersymbols，Ininsulationtestmode,indicatesthemeasurevalueoverflow.
Unsafevoltagewarning，Ininsulationmode,indicatesgreater20Vvoltageisdetectedonthe
inputterminals.

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Indicator Indicator Indicator IndicatorDescription Description Description Description
Continuitytestfunctionisselected
Autopowerofffunctionisselected
InsulationtestIndicator.whentherotaryswitchatinsulationposition,thissignappers,when
thetestvoltageispresent,thesignalternateonoroff
Sourcevoltageratingforinsulationtest
Timerunit
Measureunit
DisplaytheMax,MinAvgvalue
Display Display Display DisplayM MMMessages essages essages essages
Indicator Indicator Indicator IndicatorDescription Description Description Description
batt
AppearsonprimarydisplayIndicatesthebatterytoolowforreliableoperation,please
replacebattery.
bat
AppearsonAuxiliarydisplay，IndicatesthebatterytoolowtoperformInsulationtest
PrES
Presetvalue
POFF
Autopowerofffunctionisdisabled

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Indicator Indicator Indicator IndicatorDescription Description Description Description
LIVE
Ininsulationmode,indicatesmeterhavedetectedthevoltageontheinputterminals
DISC
Ininsulationmode,indicatesthemeterperformstheautodischargefunction.;nottotouch
anyinputterminalsinthismode.
SAVE
Storemeasuringdata
dELn:
Deletetheselecteddata
dELALL
Deleteallmemorizeddata
COMPHi
Theupperlimitedvalue
COMPLo
Thelowerlimitedvalue
----COMP
Thelimitedvalueisinvalid
Beepfunctionisdisabled

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Buttons Buttons Buttons Buttons

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BBBButtons uttons uttons uttonsDescription Description Description Description
○1
Activestorefunction:storethemeasureingdatatomemory
○2
Activereadfunction,toviewthedatastoreinmemory;changecursorposition.
○3
1：indcv,acv,continutymodetoviewthemaxvalue,minvalue,avgvalue,upperlimitedvalue,lower
limitedvalue,relativevalue
2：ininsulationmodetoviewmaxvalue,minvalue,avgvalue,upperlimitedvalue,lowerlimited
value,presettimer,DAR,PI
○4
ConfirmButton
○5
BackLighton/Off,whenthelightturnon,after10Sthemeterautoturnofflight
○6
Activethetimerfunction
○7
Activeholdfunction(inDCV,ACV,Continuity)orlockfunction(Insulation)
○8
Activerelfunction(indcv,acv,continuitymode);changecursourposition;
○9
Activecomparefunction
○10
Selectonetestoutputvoltageforinsulationtest.
○11
Activeinsulationtest
Rotary Rotary Rotary Rotaryswitch switch switch switch
PositionFunction

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PositionFunction
OFF
Turnoffthemeterpower
DCV
DCVoltage:0.1V~1000V
ACV
ACVoltage0.1V~750V
Ohmandcontinuity:0.01Ω~200.0Ω
Insulation
InsulationTest0.01MΩ~10.0GΩ，TestoutputVoltage50V（default）、100V、250V、500V 、
1000V,thetestoutputvolatagehaveselectedwillbesaved.
Input Input Input InputTerminal Terminal Terminal Terminal
TerminalDescription Description Description Description
V（HI）
Input/outputpositiveterminal
COM
CommonterminalexceptInuslationmeasure
LO
CommonterminalinInuslationmeasure
FFFFunction unction unction unctionDescription Description Description Description
Power-Up Power-Up Power-Up Power-UpOptions Options Options Options
HoldingabuttondownwhileturningtheMeteronactivatesapower-upoption.Power-upoptionsallowyoutouse
additionalfeaturesandfunctionsoftheMeter.Toselectapower-upoption,holddowntheappropriatebuttonindicated
whileturningtheMeterfromOFFtoanyswitchposition.Power-upoptionsarecancelledwhentheMeteristurnedOff
ButtonsFFFFunction unction unction unction
SELECT
Disablesautomaticpower-offfunctionDisplayshowsPoFFuntilthebuttonisreleased
ENTER
DisableBeepfunction

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Automatic Automatic Automatic AutomaticPower Power Power PowerOff Off Off Off
TheMeterhaveautomaticpowerofffunction （Sleepmode）toconservebatterypower.ifthereisnofunctionchangeor
buttonpressfor10minutes.TheMetercomesoutofSleepmodewhenakeyispressedorwhentherotaryswitchedis
changed.
TodisabletheSleepmode,holddownSELECTbuttonwhileturningtheMeteron.Sleepmodeisalwaysdisabledinthe
insulationtestmode,oriftheautopowerofffeaturehasbeendisabledbypressingSELECTbuttonwhentheMeteris
turnedon.
Hold Hold Hold HoldFuncion Funcion Funcion Funcion
PressHoldbuttontofreezethedisplayedvalue.Pressagaintoreleasethedisplay.
Relative Relative Relative RelativeMeasurement Measurement Measurement Measurement
Showthedifferencebetweenactualvalueandtherelativebase.
PressREL REL REL RELButtontoenterrelativemeasurementandthemeterwillrecordtheinitialvaluewhenpressingthekey.
Displayedvalue=Actualvalue-Initialvalue
PressREL REL REL RELButtonagaintoexitrelativemeasurement.
PressSELECTbuttontoviewInitialvalue,whentheInitialvalueisinvalid,display----.

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Insulation Insulation Insulation InsulationTest Test Test TestLock Lock Lock Lock
Ininsulationtestmode,pressTestbuttontoperforminsulationtestuntilthebuttonisreleased.whenthebuttonis
released,thescreendisplayholdsign.
PressLockButton,thenthescreendisplayLocksign,pressTestButton,themeterwillperforminsulationtestunitlyou
pressTestbuttonagain;Thetestlockwillunlockedwhiletocancelinsulationtest.
Lockfunctionisinvalidwhentimerfunctionisselected.
SSSStor tor tor toring ing ing ingTest Test Test TestData Data Data Data
PressMEMObutton,themeterenterHoldstatusautomatically.LCDscreendisplay‘MEMO ’ andthememorycode
onsecondarydisplay(seebelow).Press△/▽buttontochangethecode,pressentertosavethedatainthepreferred
memorycodeandthescreendisplay‘SA VE’.Thedataisstroedsuccessfullywhenthebuzzbeeps.Themetercansave20
datasandmemorycodefrom00to19.

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Read Read Read Reading ing ing ingTest Test Test TestData Data Data Data
PressREADbuttontodisplaythedatainmemory.Press△/▽buttontochangethecodeandreadthedata
accordingly.

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DDDDelete elete elete eleteD DDData ata ata ata
InREADmode,pressENTER,meterdisplaydELn,pressenterbuttonagaintodeleteselecteddata;pressREAD
buttontodeletealldata.Themeterwillbeeponcethedataisdeleted.Pressotherbuttontoquitthecurrentsatus.

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Compare Compare Compare CompareF FFFunction unction unction unction
Whencomparefunctionisselected,themeterbeepsandwon’tdisplay‘PASS’,whenthemeasuringdatahigherthan
upperlimitedvalueorlowerthanlowerlimitedvalue.
PressCOMPbuttonwillactivecomparefunction.,meterdisplay‘COMP’,whenthepresetupperlimitedvalueis
lowerthanthelowerlimitedvalue,COMPfunctionisinvalid.,meterdisplay‘----’.
PressCOMPbuttontoviewtheupperandthelowerlimitedvalue.Themeterdisplay‘COMP’anddisplay‘HI’or
‘LO’onsecondaryscreen,asbelow:Whenthemeterisdisplayingtheupperlimitedvalueorthelowerlimitedvalue,
pressENTERtoadjustthevalue.Themeterwillbeflashingwiththeupperlimitedvalueorthelowerlimited
value.SwitchtotheproperrangeorsignalpolarbypressingSELECT,Press△/▽tochangethevalue,andpressENTER
tosavethevalue.

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Timer Timer Timer TimerFunction Function Function Function
Thetimerfunctioncanonlybeactivatedintheinsulationtest.EnabletheTIMERfunctionbypressingTIMER(the

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meterdisplayTIMER),thelockfunctionwillbeinvalid,andthemeterstartstheinsulationtestwhenpressingthemeasure
button.Whenthetimeisdue,thetestisstopped.
Intimermode,thedisplaywillbeasfollowing.Thecurrentvoltageandtimeisshownonthesecondarydisplay.The
meterjustdisplaythetestvoltagewhenitisundertheinsulationtest,tocheckthetime,pleasepress△button.
PressSELECTtocheckthepresettime.TheLCDscreendisplayTIMER,PRESisshownonprimarydisplay,the
secondarydisplayshowsthepresettime.PressENTER,themeterdisplaySet.Thetimecanbeadjustedby△/▽button.

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PreswsENTERagaintoconfirmtheadjustment.