Mastech MS8268 - General General General Instructions Instructions; Precaution Safety Measures; Preliminary; During Use

1.
1.
1.
1.GENERAL
G ENERAL
GENERAL
GENERALINSTRUCTIONS
I NSTRUCTIONS
INSTRUCTIONS
INSTRUCTIONS
ThisinstrumentcomplieswithIEC1010-1(61010-1@IEC:
2001), CAT. II1000Vand CAT. III600Vovervoltagestandards.
SeeSpecifications.
To getthebestservicefromthisinstrument,readcarefullythis
user'smanualandrespectthedetailedsafetyprecautions.
InternationalsymbolsusedontheMeterandinthismanual
areexplainedinchapter1.1.3
1.1
1.1
1.1
1.1Precautions
P recautions
Precautions
Precautionssafety
s afety
safety
safetymeasures
m easures
measures
measures
1.1.1
1.1.1
1.1.1
1.1.1Preliminary
P reliminary
Preliminary
Preliminary
*MeasurementcategoryIIIisformeasurementsperformedin
thebuildinginstallation.
NOTE:Examplesaremeasurementsondistributionboards,
circuit-breakers,wiring,includingcables,bus-bars,junction
boxes,switches,socket-outletsinthefixedinstallation,and
equipmentforindustrialuseandsomeotherequipment,for
example,stationarymotorswithpermanentconnectionto
thefixedinstallation.
*MeasurementcategoryIIisformeasurementsperformedon
circuitsdirectlyconnectedtothelowvoltageinstallation.
NOTE:Examplesaremeasurementsonhousehold
appliances,portabletoolsandsimilarequipment.
*MeasurementcategoryIisformeasurementsperformedon
circuitsnotdirectlyconnectedtoMAINS.
NOTE:Examplesaremeasurementsoncircuitsnotderived
fromMAINS,andspeciallyprotected(internal)MAINS
derivedcircuits.Inthelattercase,transientstressesare
variable;forthatreason,requiresthatthetransient
withstandcapabilityoftheequipmentismadeknowntothe
user.
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*WhenusingthisMultimeter,theusermustobserveall
normalsafetyrulesconcerning:
―Protectionagainstthedangersofelectriccurrent.
―ProtectionoftheMultimeteragainstmisuse.
*Foryourownsafety,onlyusethetestprobessuppliedwith
theinstrument.Beforeuse,Checkthattheyareingood
condition.
1.1.2
1 .1.2
1.1.2
1.1.2During
D uring
During
Duringuse
u se
use
use
*Ifthemeterisusednearnoisegeneratingequipment,be
awarethatdisplaymaybecomeunstableorindicatelarge
errors.
*Donotusethemeterortestleadsiftheylookdamaged.
*Usethemeteronlyasspecifiedinthismanual;otherwise,
theprotectionprovidedbythemetermaybeimpaired.
*Useextremecautionwhenworkingaroundbareconductors
orbusbars.
*Donotoperatethemeteraroundexplosivegas, vapor, ordust.
*VerifyaMeter'soperationbymeasuringaknownvoltage.
DonotusetheMeterifitoperatesabnormally.Protection
maybeimpaired.Whenindoubt,havetheMeterserviced.
*Usestheproperterminals,function,andrangeforyour
measurements.
*Whentherangeofthevaluetobemeasuredisunknown,
checkthattherangeinitiallysetonthemultimeteris the
highestpossibleor,whereverpossible,choosethe
autorangingmode.
* To avoiddamagestotheinstrument,donotexceedthe
maximumlimitsoftheinputvaluesshowninthetechnical
specificationtables.
*Whenthemultimeterislinkedtomeasurementcircuits,do
nottouchunusedterminals.
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