Keysight U1271A - Figure 2-34 4-20 Ma % Scale Display; Scale of 4-20 Ma or 0-20 Ma

2 Making Measurements
Measuring AC or DC Current
98 U1271A/U1272A User’s Guide
% Scale of 4-20 mA or 0-20 mA
The 4- 20 mA current loop output from a transmitter is a
type of electrical signal that is used in a series circuit to
provide a robust measurement signal that is proportional to
the applied pressure, temperature, or flow in process
control. The signal is a current loop where 4 mA represents
the zero percent signal and 20 mA represents the 100
percent signal.
The % scale for 4- 20 mA or 0- 20 mA in this multimeter is
calculated using its corresponding DC mA measurement. The
multimeter will automatically optimize the best resolution for
the selected measurement. Two ranges are available for the
% scale as shown in Table 2- 3.
To display the current measurement in % scale:
1 Position your multimeter’s rotary switch position to .
Set up your multimeter to measure DC current by
following the steps listed in the “Measuring AC or DC
Current” section.
2 Press until (or ) is shown on the right
side of the display. Probe the test points and read the
display.
Figure 2-34 4-20 mA % Scale display
The analog bar graph displays the current measurement
value. (In the example above, 8 mA is represented as 25% in
the 4- 20 mA % scale.)
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