Instrument Compatibility - AEMC 300-24-2-10 User Manual

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AmpFlex - Flexible AC Current Probes

Instrument Compatibility

The AmpFlex
other voltage measuring instrument with an input impedance greater
than 1M. To achieve the best overall accuracy, use the AmpFlex
with a AC voltmeter having an accuracy of 0.75% or better.
Operation
Please make sure that you have already read and fully understand the
WARNING section on page 2.
Making Measurements with the AmpFlex
 Connect the electronic module to the AC Volt range of your DMM or
measuring instrument. Select the appropriate module output voltage
range. If the current magnitude is unknown, and if AmpFlex
ranges, select the lowest mV/A output setting.
 Wrap the flexible core around the conductor to be tested. If possible
within range, select the higher mV/A AmpFlex
the best resolution. Do not exceed specified current range for the
output. Do not use on selected range if overload LED goes on.
 Read the displayed value on the DMM and divide it by the range
selected (i.e. if reading = 2.59V with the 10mV/A output range, the
current flowing through the probe is 2590mV ÷ 10 = 259A).
 For best accuracy, carefully center the conductor inside the flexible
core, and avoid if possible, the proximity of other conductors which
may create noise and interference (particularly near the latch).
 True RMS measurements are obtained when the AmpFlex
connected to a True RMS meter. Note that the DC component is not
measured.
Tips for Making Precise Measurements:
 When using the AmpFlex
range that provides the best resolution. Failure to do this may result in
measurement errors.
 For best results, select the highest AmpFlex
and the most sensitive meter range for this output.
 Make sure the DMM or measuring instrument can accurately measure
mV . Certain inexpensive DMM have poor resolution and accuracy
AC
when measuring low mV AC.
 For best accuracy, center the AmpFlex
measured. (See figure 2).
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is compatible with any multimeter, AC voltmeter, or
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with a meter, it is important to select the
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around the conductor to be
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output range to obtain
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output signal possible
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