Quartz M320 User manual

Pocket MultimeterM320
USER SMANUAL
SAFETYINFORMATION
MeasurementcategoryII isforthemeasurementsperformed on
circuitsdirectlyconnected tothelowvoltageinstallation.Thismeterhas
beendesignedaccording toIEC-1010 concerning electronicmeasuring
instrumentswithan overvoltagecategory(CATII)and pollutiondegree
2.
Followall safetyandoperatinginstructionstoensurethemeteris
used safelyandiskept ingood condition.
Withproperuseand care,yourdigitalmultimeterwill giveyou years
ofsatisfactoryservice.
DURINGUSE
lNeverexceed theprotectionlimitindicated inthespecificationsfor
eachrangeofmeasurement.
lNeverusethemetertomeasurevoltagesthatmightexceed 600V
aboveearthground incategoryII installations.
lAlwaysbecarefulwhenworkingwithvoltagesabove60Vdcor30V
acrms. Keep fingersbehind theprobebarrierswhilemeasuring.
lDonot performresistancemeasurementsonlivecircuits.
lInspecttestleadsand probesforcracks,breaksorcrazesinthe
insulation beforeusingthemeter.
SAFETYSYMBOL
Caution:refertotheinstruction manual.Incorrectuse
mayresult indamagetothedeviceoritscomponents.
~ AC(AlternatingCurrent)
DC (Direct Current)
ACorDC
Earthground
Doubleinsulated
Fuse
ConformstoEuropean Union directives
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MAINTENACE
lBeforeopening case,alwaysdisconnecttestleadsfromall
energized circuits.
lForcontinuousprotectionagainstfire,replacefuseonlywithratings:
F500mA/250V ∅5×20 (QuickActing).
lNeverusethemeterunlessthebackcoverisinplaceandfastened
completely.
lDonotuseabrasivesorsolventsonthemeter. Tocleanituseonlya
dampclothandmilddetergent.
GENERALDESCRIPTION
Thiscompactdigitalmultimeterisdesigned tomeasureACand DC
voltage,ACandDC current, Resistance,Capacitance,Diodeand to
performaudiblecontinuitycheckswithaccuracyand ease.
Small and lightweight, withacarryingcaseand testleadswound on
itsbody, thisinstrument will provideyou yearsofsatisfactoryservice.
SPECIFICATION
Accuracyisspecifiedforoneyearaftercalibration,atoperating
temperaturesof18 to28 , withrelativehumidityat 0% to75%.
Accuracyspecificationstaketheformof: ±(%ofReading +Numberof
Least Significant Digits)
Voltage
Function Range Resolution Accuracy
DC Millivolt.
mV 400mV 0.1mV ±(1.0%ofrdg
+10 digits)
4V 1mV
40V 10mV
400V 100mV
DC Voltage
V
600V 1V
±(0.5%ofrdg +3
digits)
4V 1mV
40V 10mV
400V 100mV
ACVoltage1,2
V~
600V 1V
±(1.0%ofrdg +3
digits)
1. FrequencyRange: 40Hz~500Hz
2. Response:Average, calibrated inrmsofsinewave
3. Overload Protection: 600V dcor600Vacrms.
Current
Function Range Resolution Accuracy
40mA 0.01mADC Current
mA 400mA 0.1mA
±(1.5%ofrdg+3
digits)
40mA 0.01mA
ACCurrent
mA~ 400mA 0.1mA
±(1.5%ofrdg+3
digits)
Overload protection:
F500mA/250V fuseformArange.
Maximuminput current: 400mAdcor400mAacrmsformArange.
Resistance
Function Range Resolution
Accuracy
400.0Ω0.1Ω±(0.5%ofrdg+3digits)
4.000kΩ1Ω
40.00kΩ10Ω
400.0kΩ100Ω
4.000MΩ 1kΩ
±(0.5%ofrdg+2digits)
Resistance
Ω
40.00MΩ 10kΩ±(1.5%ofrdg+3digits)
Overload protection: 600V dcor600Vacrms.
Capacitance
Function Range Resolution Accuracy
50nF 10pF
<10nF:±[5.0%of(rdg-50
digits)+10 digits]
±(3.0%ofrdg+10 digits)
500nF 100pF
5µF 1nF
50µF 10nF
Capacitance
100µF 100nF
±(3.0%ofrdg+5digits)
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Overload protection: 600V dcor600Vacrms.
DiodeTest
Function Range
Resolution Accuracy
DiodeTest 1V 0.001V 1.0% uncertainty
Overload protection: 600V dcor600Vacrms.
TestCondition:ForwardDCcurrentapproximately1mA. Reversed DC
voltageapproximately1.5V.
ContinuityCheck
Function Range
Resolution Description
ContinuntiyTest
400Ω0.1ΩContinuitybeeper≤
50Ω
Overload protection: 600V dcor600Vacrms.
Test Condition: Open circuit voltage:approx. 0.5V
WITHAUTOPOWEROFF FUNCTION
GENERALSPECIFICATIONS
Environment conditions:
600V CAT. II
Pollution degree:2
Altitude<2000m
Operating temperature: 0~40 (32℉~122℉)
Storagetemperature: -10~60 (14℉~140℉)
MAX. Voltagebetween terminalsand earthground:600VACrmsor
600V DC.
FuseProtection: F500mA/250V ∅5×20.
SampleRate: 3times/secfordigitaldata.
Display:3999 LCDdisplay.Automaticindication offunctionsand
symbols.
Rangeselection:automatic.
OverRangeindication: LCDwill display"OL".
Lowbatteryindication:The"
BATT"isdisplayed whenthebatteryis
undertheproperoperation range.
¥Polarityindication: "−"displayedautomatically.
¥Powersource: 3V
¥Batterytype: SR44.
¥Dimensions: 120(L)×70(W)×18(H)mm.
¥Weight: 110g.Approx. (batteryincluded).
OPERATINGINSTRUCTION
VoltageMeasurement
1. Set rotaryswitchtotheV range.
2. Pressthe SELECT keytoselect DCVorACV measuringmode.
3. Connect theblackandredtest leadstothecircuit being measured
4.Read thedisplayedvalue.Thepolarityofred testlead connection
will beindicated whenmaking aDCV measurement.
CurrentMeasurement
1.Turnoff powertothecircuit. Dischargeall highvoltagecapacitors.
2. Set therotaryswitchtothemArange.
3. Pressthe SELECT keytoselect DCAorACAmeasuring mode.
4. Breakthecircuit pathtobetested.
Touchtheblackprobetothemorenegativesideofthebreak;touch
thered probetothemorepositivesideofthebreak.(Reversing the
leadswill giveanegativereading, but will not damagetheMeter.)
6.Turnon powertothecircuit; then read thedisplay.
7. Turnoff powertothecircuitanddischargeall high voltagecapacitors.
RemovetheMeterandrestorethecircuit tonormaloperation.
Capacitance Measurement
1. Set therotaryswitchto range.
2.Connectthetestleadstothecapacitorbeing measured andread
thedisplayed value.
Resistance Measurement
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1. Set therotaryswitchto Ωrange.
2.Connectthetestleadstothecircuitorresistorbeingmeasured and
read thedisplayedvalue.
DiodeTest
1. Set therotaryswitchto range.
2.Forforward-biasreadingsonanysemiconductorcomponent, place
thered testleadon thecomponent'sanodeand placetheblacktest
lead onthecomponent'scathode.
3.Themeterwill showtheapprox.forwardvoltageofthediode
AudibleContinuityTest
1. Set therotaryswitchto range.
2.Connectthetestleadstotheresistanceinthecircuitbeing
measured.
3.Whenthetest lead tothecircuit isbelow50Ω, acontinuousbeeping
will indicateit.
KEYFUNCTION
HoldKey
DataHoldmodemakesthemeterstop updatingthedisplay.Enabling
DataHoldfunction inautorangemodemakesthemeterswitchto
Manualrangingmode,butthefull-scalerangeremainsthesame.Data
Holdfunctioncan becancelled bychanging themeasurementmode,
pressing RANGE key, orpush HOLD keyagain.
Toenterandexit theDataHoldmode:
1. Press HOLD key(short press). Fixesthedisplayon thecurrent value,
DH isdisplayed.
2.A secondshort pressreturnsthemetertonormalmode.
SelectKey
1. Switchesbetween dcand acvoltageorcurrent.
2. Disablesautomaticpower-off feature.
BATTERYSAVER
TheMeterentersthe"sleep mode"andblanks thedisplayiftheMeteris
on but not usedfor30 minutes.
Pressthe HOLD keyorrotatetherotaryswitchtowakethemeterup.
TodisabletheSleep mode,holddownthe SELECT functionkeywhile
turningthemeteron.
BEEPERINDICATION
Whenpressthefunctionkeyandifit isvalid,abeep will beemitted. The
buzzerwill soundfivetimesoneminutebeforeautopoweroff.And a
long sound toshowtheautopoweroff.Inthecontinuitymeasuring
status, iftheresistanceissmallerthan 50Ω,thebuzzerwill sound.
BATTERY&FUSE REPLACEMENT
ToreplacetheMeter'sbattery:
Ifthesign"BATT" appearson theLCDdisplay,itindicatesthatthe
batteryshouldbereplaced.Removethescrewonthebackcoverand
openthebatterycase.Replacetheexhaustedbatterieswithtwonew
1.5V batteriesofthesametype(SR44).
ToreplacetheMeter'sfuse:
Fuserarelyneedreplacementandblowalmostalwaysasaresultof
operator serror.Open thecaseandreplacetheblownfusewiththe
samerating specified: F500mA/250V ∅5×20.
WARNING!
Beforeattempting toopen thecase,always besurethattestleadshave
beendisconnected frommeasurementcircuits.Closecaseand tighten
screwscompletelybeforeusingthemetertoavoidelectricalshock
hazard.
ACCESSORIES
Battery1.5V (SR44)2
Carrying Case1
Operating manual1
WLS040
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