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2 Select the multimeter range which best corresponds to the measured current.
3 Zero the probe in DC and in DC coupled AC measurements.
4 Observe the output polarities for DC measurement.
5 Clamp the probe on the conductor to be measured and read the current
6 After measurement, turn the probe OFF.
Keysight 34134A User's Guide
For better reading stability, you may use the DMM 2 Volt range and let the
probe "warm up" for one minute before zeroing.
The Current Probe has a dual output, DC V output in DC and AC V output in
AC.
– The "1 V/A" range has an output signal of 1 mV/mA AC/DC with an output
of 2 volts representing 2 amps present in the conductor being measured.
– The "10 mV/A" range has an output signal of 10 mV/A AC/DC with an
output of 500 millivolts representing 50 amps present in the conductor
being measured.
When the 34134A Current Probe has been used for a current measurement
and then removed from the conductor, a small amount of residual magnetism
often remains in the core. This residual magnetism will cause the voltmeter to
show a small DC reading even though there is no current passing through the
jaws of the probe. The residual magnetism should not cause a problem for AC
current measurement because the AC voltage function in most multimeters is
AC coupled. DC offset caused by the residual magnetism will contribute to
reading errors, but can be minimized by using the zero adjust knob to show a
reading of 0
a few counts on the multimeter (probe not clamped on a
conductor).
There will always be some instability and noise generated by the Hall sensor,
the earth magnetic field and environmental noise. This is particularly
noticeable on the most sensitive range, 1 V/A (1 mV/mA), where you may have
up to 5 mV of uncertainty, which cannot be "zeroed out." "Zero" the probe
while it is connected to the DMM and on the range to be used. Let the probe
warm-up for one minute before zeroing. Turn the zero adjustment knob until
the probe is zeroed.
flowing directly on your meter.
The output of the probe is 10 mV/A AC/DC or 1 mV/mA AC/DC. If your meter
indicates a negative reading during DC measurements, this simply means that
the current flow is in the opposite direction of the arrows marked "I" on the
probe or that the probe connections are reversed (polarity).
Getting Started
13
1
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