Brymen BM230 Series Manual de usuario

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USER'S

MANUAL

Mìøící a dílenské pøístroje / Multimetry

uvádí:

BRYMEN BM235, BM233, BM231

BRIGHTPEOPLESCHOICE

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Thismanualcontainsinformationandwarningsthatmustbefollowedforoperatingthe

metersafelyandmaintainingthemeterinasafeoperatingcondition.Ifthemeteris

usedinamannernotspe cifiedbythemanufacturer,theprotectionprovidedbythe

metermaybeimpaired.

identifiesconditionsandactionsthatcouldresultinseriousinjuryoreven

deathtotheuser.

identifiesconditionsandactionstha tcouldcausedamageormalfunction

intheinstrument.

Toreducetheriskoffireorelectricshock,donotexposethisproducttorainor

moisture.Themeterisintendedonlyforindooruse.

Keepyourhands/fingersbehindthehand/fingerbarrie rs(ofthemeterandthetest

probeassembly, whereapplicable)thatindicatethelimitsofsafeaccessofthehand 

held parts during measurements. Inspect lead wires, connectors, and probes for

damagedinsulationorexposedmetalbeforeusingthemeter.I fanydefectsarefound,

replacethemimmediately.Onlyusetheprobeassemblyprovidedwiththemeterora

ULListedProbeAssemblytothesamemeterratingsorbetter.

IEC61010031requiresexposedconductivetestprobetipstobe 4mmforCATIII&

CATIVratings.Refertothecategorymarkingsonyourprobeassembliesaswellason

theaddonaccessories(likedetachableCapsorAlligatorClips),ifany,forapplicable

ratingchanges.

Observepropersafetyprecautionswhenworkingwithvoltagesabov e33Vrms,46.7

Vpeakor70VDC.Thesevoltagelevelsposeapotentialshockhazardtotheuser.

Beforeandafterhazardousvoltagemeasurements,checkthevoltagefunctionona

knownsourcesuchaslinevoltagetodeterminepropermeterfunctioning.

Disconnectthetestleadsfromthetestpointsbeforechangingfunctions.

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MarkingofElectricalandElectronicEquipment(EEE).Donotdisposeofthis

productasunsortedmunicipalwaste.Contactaqualifiedrecycler

Caution!RefertotheexplanationinthisManual

Caution!Possibilityofelectricshock

Earth(Ground)

MeterprotectedthroughoutbyDoubleInsulationorReinforcedinsulation

Fuse

DirectCurrent(DC)

AlternatingCurrent(AC)

3 ThreephaseAlternatingCurrent

isapplicabletotestandmeasuringcircuitsconnectedat

voltage MAINS installation. Examples are

measurementsondevicesinstalledbeforethemainfuseorcircuitbreakerinthe

buildinginstallation.

isapplicabletotestandmeasuringcircuitsconnectedto

thedistributionpartofthebuildin voltageMAINSinstallation.Examplesare

measurementsondistributionboards(includingsecondarymeters),circuit breakers,

wiring,includingcables,bus bars,junctionboxes,switches,socket outletsinthefixed

installation,andequipmentfori ndustrial use and some other equipment such as

stationarymotorswithpermanentconnectiontothefixedinstallation.

isapplicabletotestandmeasuringcircuitsconnected

directlytoutilizationpoints(socketoutletsandsimilarpoints)ofthelowvoltage MAINS

installation. Examples are measurements on MAINS CIRCUITS of household

appliances,portabletoolsandsimilarequipment.

The instruments conform to CENELEC Lowvoltage directive 2014/35/EC,

Electromagneticcompatibilitydirective2014/30/EU andRoHSdirective2011/65/EU.

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Note:Topofthelinemodelisusedasrepresentativeforillustrationpurposes.Please

refertoyourrespectivemodelforfunctionavailability.

1) 35/6 digits 6000

countsLCDdisplay

2)Pushbuttons for

specialfunctions&

features

3)Selectortoturnthe

PowerOnorOffand

Selectafunction

4)InputJackfor10A

(20Afor30sec)current

function

5)InputJackforall

functions EXCEPT A,

mA& Acurrent

functions

6)Common (Ground

reference)InputJackfor

allfunctions

7) Input Jackfor A and

mA currentfunction

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RMS(Root MeanSquare) is a termusedtodescribetheeffectiveorequivalentDC

valueofanACsignal. True RMS is the termwhichidentifiesaDMMthatresponds

accuratelytotheeffectiveRMSvalueregardlessofthewaveformssuchas:square,

sawtooth, triangle, pulse trains, spikes, as well as distorted waveforms with the

presenceofharmonics.Harmonicsmaycause:

1)Overheatedtransformers,generatorsandmotorstoburnoutfasterthannormal

2)Circuitbreakerstotripprematurely

3)Fusestoblow

4)Neutralstooverheatduetothetriplenharmonicspresentontheneutral

5)Busbarsandelectricalpanelstovibrate

CrestFactoristheratiooftheCrest(instantaneouspeak)valuetotheTrueRMS

value,andiscommonlyusedtodefinethedynamicrangeofaTrueRMSDMM.Apure

sinusoidal waveform has a Crest Factor of 1.414. A badly distorted sinusoidal

waveformnormallyhasamuchhigherCrestFactor.

Beforeandafterhazardousvoltagemeasurements,testthevoltagefunctionona

knownsourcesuchaslinevoltagetodeterminepropermeterfunctioning.

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automaticallyselectsmeasurementfunctionofDCVorACVbased , on their

inputlevelsviathetestleads. Theinputalsoprovidesalowramp upimpedance(LoZ)

todrainghostvoltages*.

 .

voltage thresholdof1V DCorAC uptotherated1000Vis

present,themeterdisplaysthevoltagevalueinappropriateDCorAC,whichever

largerinpeakmagnitude.

Note:

* Ghostvoltages are unwanted stray signals coupled from

adjacenthardsignals,whichconfusecommonmultimetervoltagemeasurements. The

modeprovideslow(ramp up)inputimpedance(approx. 2.1

todrainghostvoltagesleavingmainlyhardsignalvaluesonmeterreadin gs.Itisan

invaluablefeatureforpreciseindicationofhardsignals,suchasdistinguishingbetween

hotandopenwires(toground)inelectricalinstallationapplications.

*Only , pushbutton features areavailable inAutoVmode.

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mode inputimpedanceincreasesabruptlyfrom initial 2.1

beinginsuchlowimpedancemode.Peakinitialloadcurrent,whileprobing1000VAC

forexample,canbeupto 673mA (1000Vx1.414/ 2.1 ,decreasinga bruptly to

approx. 2.4mA (1000Vx1.414/ 580 Donotuse

modeoncircuitsthatcouldbedamagedbysuchlowinputimpedance.Instead,

userotaryselector or high inputimpedancevoltagemodestominimizeloading for

such circuits.

Press the buttonmomentarilyto select the subject functions in sequence.

Lastselection willbesavedaspowerupdefault forrepeatmeasurementconvenience.

Note:

andtheassociated areequippedwithdigitallow pass filter (DSP),and

arecapableofhandling (VariableFrequencyDrives)signalsforfundamentalV&

Hzreadings. ItalsoimprovesACVandHzreadingstability when being used inmost

noisyelectricalenvironments.

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Press the pushbutton momentarily to toggle Hz function. Itisonlyavailableto

VoltageandCurrentrelatedranges.

Inputsensitivityvariesautomaticallywith the functionrangeselected whileactivating

theHzfunction. 6V function range hasthehighestandthe1000Vrangehasthe

lowest. WhenactivatedunderDCV,ACVorVFD ACV voltagefunction,thetrigger

voltage range will be displayed right before starting the Hz readings. Press

momentarily the button can manually selectanothertrigger voltagerange(not

availabletocurrentranges) . Itisrecommendedtofirstmeasurethesignal voltage(or

current) level and activateHzfunctioninthatrangeto getthemostappropriatetrigger

level. IftheHzreadingbecomesu nstable,selectlowersensitivitytoavoidelectrical

noise.Ifthereadingshowszero,selecthighersensitivity.

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Press the buttonmomentarily totoggle the functions.Lastselection will be

savedaspowerup default forrepeatmeasurementconvenience.

functionis havingimproved convenience forcheckingwiring

connectionsandoperationofswitches.Acontinuousbeeptone togetherwithflashing

display backlight indicateacompletewire. Suchaudibleandvisibleindications improve

continuity readabilities innoisyworkingenvironments.

Usingresistanceandcontinuityfunctioninalivecircuitwillproducefalseresultsand

may damage the instrument. In many cases the suspected component must be

disconnectedfromthecircuittoobtainanaccuratereading

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Press the buttonmomentarily totoggle the functions.Lastselection will be

savedaspowerupdefault forrepeatmeasurementconvenience.

In function, thenormalforwardvoltagedrop(forwardbiased)foragoodsilicon

diodeisbetween0.400Vto0.900V.Areadinghigherthanthatindicatesaleakydiode

(defective).Azeroreadingi ndicatesashorteddiode(defective).AnOLindicatesan

opendiode(defective).Reversethetestleadsconnections(reversebiased)acrossthe

diode.ThedigitaldisplayshowsOLifthediodeisgood.Anyotherreadingsindicate

thediodeisresistiveorshorted(defective).

Dischargecapacitorsbeforemakinganymeasurement.Largevaluecapacitorsshould

bedischargedthroughanappropriateresistanceload.

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