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AmpFlex
- Flexible AC Current Probes
Instrument Compatibility
The AmpFle x
other voltage measu ring instru ment with an input im pedance gre ater
than 1M . To a chieve th e be st ove rall accu racy, u se th e AmpF lex
with a AC voltmeter having an accuracy of 0.75% or better.
Operation
Please m ake sure that yo u have alre ady read an d fully understa nd the
WARNING section on page 2.
Making Measurements with the AmpFlex
Connect the electroni c mo dule to t he AC Volt rang e of your DM M or
measuring in strument. Select the a ppropriate module output volt age
range. If the current magnitude is un known, and if AmpFlex
ranges, select the lowest mV/A output setting.
Wrap the flex ible core aro und the conductor to be t ested. If po ssible
within range, select the hig her mV/A AmpFlex
the best re solution. Do n ot exceed specified cu rrent rang e for the
output. Do not use on selected range if overload LED goes on.
Read the displayed valu e on the DM M and divid e it by the
selected (i.e. if reading = 2.59V with the 10mV/A output ra nge, the
current flowing through the probe is 2590mV ÷ 10 = 259A).
For best a ccuracy, ca refully cent er the co nductor in side the flexi ble
core, and av oid if possibl e, the prox imity of other cond uctors which
may create noise and interference (particularly near the latch).
True RMS
connected to a True RMS meter. Note that the DC component is not
measured.
Tips for Making Precise Measurements:
When u sing t he AmpFlex
range that provides the best resolution. Failure to do this may result in
measurement errors.
For b est results, sel ect t he hig hest A mpFlex
and the most sensitive meter range for this output.
Make sure the DMM or measuring instrument can accurately measure
mV
. Certai n inexpen sive DMM h ave poor resolution and accuracy
AC
when measuring low mV AC.
For be st accura cy, cente r the AmpFle x
measured. (See figure 2).
Shop for AEMC products online at:
®
is compatible with any
measurements a re obtai ned when t he Amp Flex
®
ShopAEMC
www.
mu ltimeter, AC voltmeter, or
with a m eter, it is impo rtant to sel ect the
®
aroun d the con ductor t o be
- 12 -
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®
out put sig nal p ossible
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