Ac Measurement; Indicator Lights: Green Led; Tips For Getting The Best Accuracy - AEMC MR410 User Manual

4.1.2 AC Measurement

• Select the appropriate AC mV or V range on the DMM or measuring
instrument.
• The DC zero adjustment is not required when measuring AC current
with a voltmeter that is AC coupled. The DC zero adjustment is
required if you are using a voltmeter that is DC coupled.
• Select the appropriate mV
instrument.
• Clamp the probe around the conductor to be tested. The display device
should now display the measured conductor current.
• Apply the conversion ratio (1mV/A) to get the value of the current.

4.1.3 Indicator Lights: Green LED

• The Green LED indicates that the probe is on and that the battery is
good.
• It will not light under low battery conditions.
• Replace the 9V battery if it is not lit.
4.2
The Models MR410 and MR520 are capable of measuring DC and fre-
quency currents over a wide range. Here are some key considerations for
getting the most accuracy from your display instrument:
• When using the Models MR410 and MR520 with a DMM or other
• Make sure that probe jaw mating surfaces are free of dust and
• Beware of short-circuit currents. Large in-rush DC currents
• If in doubt of a particular reading, remove the probe from the
AC/DC Current Probe Models MR410 and MR520
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Tips For Getting the Best Accuracy

meter, it is important to select the range that provides the best
resolution.
contamination.
(which can occur when power is first applied in a circuit) and
large high-current transients may cause varying degrees of
residual readings.
conductor under test and check to see that the display device
returns to zero. If not, it will be necessary to rezero the probe.
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or V range on the DMM or measuring
AC AC
.com
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