Product Manual

FLIRCM174USERMANUALDocumentIdentifier:CM174‐en‐US_AB
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TIME
CURRENT
0A
Start Stop
Current
Detection
Threshold
Measured Inrush
Current
100ms Sample Window (60Hz)
5.4.4ExtendedFunctionalityModes
InadditiontothebasicmeasurementsthattheCM174canperform,avarietyofextended
functionsareincluded.Refertothefollowingsectionsfordetails.
5.4.4.1InrushCurrentMode
InInrushcurrentmode,themeterdisplaystheACRMScurrentreadinginthefirst100ms
periodafterthetriggerpoint(currentdetectionthreshold)isreached,seeFig.5.3below.
Thecurrentdetectionthresholdis0.5Aforthe60.00Arangeand5.0Aforthe600.0Arange.
InrushcurrentmodeisavailablewhenmeasuringACcurrent.
1. Connectthemetertotheunpoweredcircuitundertest
2. SetthemetertoA
3. PresstheInrushbutton
toenabletheInrushcurrentmode.TheInrush
displayiconwillappearontheLCD.
4. Turnonthepowertothecircuitundertest
5. Whenthethresholdisreached,themeterwilldisplaythe RMSreadingforthe
100msintegrationtime.
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Figure5.3InrushCurrent
5.4.4.2DCAZeroMode
TheDCzerofeatureremovesoffsetvaluesandimprovesDCCurrentaccuracy.
1. SetthemetertomeasureDCA.Ensurethatthereisnoconductorintheclampjaws.
2.
PresstheDCAZerobutton toenableDCZero.Thedisplaywillzero.
3.
TakeDCcurrentmeasurementsasexplainedintheCurrentMeasurementssection.
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