Ngày tải lên :
05/03/2013, 13:43
... WARNING
BEEXTREMELYCAREFULINTHEUSEOFTHISMETER.Improperuseofthisdevice
canresultinelectricshockordestroyofthemeter.Followallsafeguardssuggestedinthis
manualandthenormalsafetyprecautionsusedinworkingwithelectricalcircuits.
Donotservicethisdeviceifyouarenotqualifiedtodoso.
To
ensuresafeoperation,andinordertoexploittothefullthefunctionalityofthemeter,
pleasefollowthedirectionsinthissectioncarefully.
ThismeterhasbeendesignedaccordingtoIEC-1010concerningelectronicmeasuringinstrumentswith
anovervoltagecategoryCATⅢ600Vandpollution2.
Followallsafetyandoperatinginstructionstoensurethatthemeterisusedsafelyandiskeptingood
operatingcondition.
Withproperuseandcare,thedigitalmeterwillgiveyouyearsofsatisfactoryservice.
1.1PRELIMINARY
1.1.1Whenusingthemeter,theusermustobserveallnormalsafetyrulesconcerning:
-Protectionagainstthedangersofelectricalcurrent.
-Protectionofthemeteragainstmisuse.
1.1.2Whenthemeterisdelivered,checkthatithasnotbeendamagedintransit.
1.1.3Whenpoorconditionunderharshpreservationorshippingconditionscaused,inspectandconfirm
thismeterwithoutdelay.
1.1.4Beforeusingtocheckforvoltage,alwaystestthemeteronaknownlivecircuittoverifythatthe
detectfunctionofthemeterisworkingproperly.
1.1.5
Test
leadortestclipmustbeingoodcondition.Beforeusingverifythattheinsulationontestleador
testclipisnotdamagedand/ortheleadswireisnotexposed.
1.1.6Fullcompliancewithsafetystandardscanbeguaranteedonlyifusedwithtestleadssupplied.
Ifnecessary,theymustbereplacedwiththesamemodelorsameelectricratings.
User& apos;sManual
SinoMeter MS8211
⑵
Test
Clip:ElectricRatings600V10Aonepiece
⑶Battery:1.5V,AAAtwopieces
⑷InstructionManualonepiece
RangeResolutionFunction
0.001VDisplay:readapproximateforwardvoltageof
diode
-ForwardDCCurrent:approx.1mA
-ReversedDCVoltage:approx.1.5V
-OverloadProtection:250VDCorrmsAC
3.2.6ACVoltageDetect
RangeTEST
Sensitivity
Voltagesensitivity>50V,adjustcontinuously
Frequency50Hz
Distance<150mm(changealongwiththesensitivity)
-Non-contactdetecting
4.OPERATINGINSTRUCTION
4.1
DATA
HOLD
Ifyouneeddataholdwhenmeasuring,youcanputon“DATA-H”button,itwillholdthereading;ifyouput
thebuttonagain,dataholdisnotcontinue.
4.2MAXIMUMVALUEMEASURINGANDHOLD
Attherangeofvoltage,youcanputon“MAX.H”button,itwillholdthemaximumvalue;ifyouputthe
buttonagain,themaximumvaluewillnotbeheld.
4.3FUNCTIONTRANSFORM
Putdownthe"FUNC."whenmeasuringthevoltage.MeterwillbetransformedbetweenDCandAC
range.Put"FUNC."whenmeasuringtheresistance,diodeandcontinuity,meterwilltransformamong
them.
4.4RANGETRANSFORM
Theautorangeisusedwhenmeasuringthevoltageandresistance.Putdownthe"RANGE"ifthe
manualrangeisneeded.Eachtimeyouputdown,rangewillgoupward;theminimumrangeis
transformedif"RANGE"isputdownatthemaximumrange.Ifthe"RANGE"isputdownmorethantwo
seconds,autorangeisusedagain.
4.5AUTOPOWEROFF
Ifthere’snoanyoperationwithinfifteenminutesafterpowerison,meterwillautopoweroffwithfiveshort
soundsandalongsoundinaminute.
Afterautopoweroff,ifstirthetransformswitchorputdownanybuttonof“FUNC.”,
“DATA-H”,”MAX.H”,”RANGE”,meterwillrecovertheworkingcondition.
Ifpressesthe“FUNC.”whenpowerison,autopoweroffdisable.
NOTE:
AttheTESTrange(ACVdetecting),thereisnoautopowerofffunction
4.6PREPARATIONFORMEASUREMENT
4.6.1Setthetransformswitchtotherightrange.Atthemanualrange,whenthevaluescaletobe
... (ortestclip)totheother
side.
4.8.6Youcangetreadingfrom
LCDdisplay.
WARNING
RiskofElectrocution.
Youcan’tinputthevoltagewhichishigherthan600VrmsAC,it’spossibletoshowhigher
voltage,butitmaydamagetheinnercircuitorcauseelectricalshock.
Payattentiontoavoidgettinganelectricshockwhenmeasuringvoltage.
NOTE:
-Atthemanualrangemode,whenonlythefigure‘OL
’
isdisplayed,itindicatesoverrangesituationand
thehigherrangehastobeselected.
-Atthelittlevoltagerange,themeterwillshowunsteadyreadingwhentestleadshaven’treachthecircuit,
it’snormalbecausethemeterisverysensitivity.Whentestleadstouchthecircuit,youcangetthetrue
reading.
-Atthemanualrangemode,whenthevaluescaletobemeasuredisunknownbeforehand,selectthe
rangeatthehighestpositionandsetdowngradually.
-TransformtothemanualrangewhenusethemVrange.
4.9MEASURINGRESISTANCE
4.9.1Rotatetheprobesocketclockwisetospinouttheprobefromthemeter.
4.9.2InserttheblacktestleadortestclipintheCOMjack.
4.9.3Setthetransformswitchatthe(rangeposition.
Autorangeormanualrangecanbe
transformedbyputtingthe“RANGE”.
4.9.4Connecttheprobetipofthe
metertoonesideofthetested
circuitandprobetipofthetest
lead(ortestclip)totheotherside.
4.9.5YoucangetreadingfromLCDdisplay.
WARNING
RiskofElectrocution.
Whenmeasuringin-circuitresistance,besurethecircuitundertesthasallpower
removedandthatallcapacitorshavebeendischargedfully.
NOTE:
-Atthemanualrangemode,whenonlythefigure‘OL
’
isdisplayed,itindicatesoverrangesituationand
thehigherrangehastobeselected.
-Formeasuringresistanceabove1MΩ,themetermaytakeafewsecondstogetstablereading.
-Whentheinputisnotconnected,i.e.atopencircuit,thefigure‘OL
’
willbedisplayedfortheoverrange
condition.
... measuredisunknownbeforehand,selectthehighestrange.
4.6.2Whenmeasuring,atfirst,connecttothepublic(COM)testingline,thenconnecttheprobetipofthe
metertothecircuitundertest.
4.6.3Ifthebatteryvoltageislessthan2.4V,displaywillshow“
”,thebatteryshouldbechangedatthis
time.
4.7DCVOLTAGEMEASURING
WARNING
RiskofElectrocution.
Youcan’tinputthevoltagewhichishigherthan600VDC,it’spossibletoshowhigher
voltage,butitmaydamagetheinnercircuitorcauseelectricalshock.
Payattentiontoavoidgettinganelectricshockwhenmeasuringhighvoltage.
4.7.1Rotatetheprobesocketclockwisetospinouttheprobefromthemeter.
4.7.2InserttheblacktestleadortestclipintheCOMjack.
4.7.3Setthetransformswitchatthe
V
rangeposition.
4.7.4Pressthe"FUNC."Button
totransformtoDCmeasurement.
Autorangeandmanualrange
canbetransformedby
pressingthe“RANGE”
button.
4.7.5Connecttheprobetipofthemeterandprobetipofthetestlead(ortestclip)acrossthepower
sourceorbeloadedonthetwosidesundermeasurement.
4.7.6YoucangetareadingfromLCDdisplay.Thepolarityofthetestedterminalwhichthetipofthe
meterconnectionwillbeindicated.
NOTE:
-Atthelittlevoltagerange,themeterwillshowunsteadyreadingwhentestleadshaven’treachthecircuit,
it’snormalbecausethemeterisverysensitivity.Whenmetertouchthecircuit,youcangetthetrue
reading.
-Atthemanualrangemode,whenonlythefigure‘OL
’
isdisplayed,itindicatesoverrangesituationand
thehigherrangehastobeselected.
-Atthemanualrangemode,whenthevaluescaletobemeasuredisunknownbeforehand,selectthe
rangetothehighestpositionandsetdowngradually.
4.8MEASURINGACVOLTAGE
4.8.1Rotatetheprobesocketclockwisetospinouttheprobefromthemeter.
4.8.2InserttheblacktestleadortestclipintheCOMjack.
4.8.3SetthetransformswitchattheVrangeposition.
4.8.4Autorangeandmanualrangecanbetransformedbyputtingthe“RANGE”.
4.8.5Connecttheprobetipofthemeter
toonesideofthetestedcircuit
andprobetipofthetestlead
...