12
FlexProbe
®
- Flexible AC Current Probe
4.2
Tips for Making Precise Measurements
• When using the FlexProbe
®
with a meter, it is
important to select the range that provides the
best resolution. Failure to do this may result in
measurement errors.
• For best results, select the highest FlexProbe
®
output signal possible and the most sensitive
meter range for this output.
• Make sure the DMM or measuring instrument can
accurately measure mV
AC
. Certain inexpensive
DMM have poor resolution and accuracy when
measuring low mV
AC
.
• For best accuracy, center the FlexProbe
®
around
the conductor to be measured.
• To increase the sensitivity or measure on low cur
-
rents, the FlexProbe
®
may be wrapped several
times around the conductor. Remember to divide
your reading by the number of turns for the actual
measurement (See Figure 1).
• The overall measurement accuracy is the sum of
the FlexProbe
®
accuracy and the displaying instru
-
ment accuracy.
• The FlexProbe
®
may be doubled around the con
-
ductor to be measured to double the output. (See
Figures 1 and 2 to show the different values on a
DMM while measuring 250A
AC
.)
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