13
6. Measurement
6-1
DCCurrentMeasurement
#
DANGER
Toavoidelectricshock,nevermakemeasurementonacircuitin
thefollowingcategories;
Measurementcategory
Ⅳ
(CAT.
Ⅳ
) :overAC/DC600V
Measurementcategory
Ⅲ
(CAT.
Ⅲ
)orlower:overAC750V/DC1000V
Do not make measurement with the battery compartment cover
removedfromtheinstrument.
Donotmakecurrentmeasurementwiththetestleadsconnected
totheinstrument.
Keep your fingers and hands behind the barrier during
measurement.
a.Setthe Function Selector switch to the"400A" positionand press
theAC/DCbuttontoselecttheDCmode."DC"shouldbeshownon
theupperleftcornerofthedisplay.
b.Withthetransformerjawsclosedwithoutclampingthemontothe
conductor,presstheZeroADJ.buttonforaboutonesecondtozero
adjustthedisplay.(TheZeroADJbuttonisenabledonlyon400A
DCrange.)
shouldbeshownonthedisplay.
c.SettheFunctionSelectorswitchtothepositionappropriateforthe
orderofthecurrentundertest.