Keysight U1281A Guide De L'utilisateur page 86

2 Making Measurements
% Scale of 4-20 mA or 0-20 mA
To display the current measurement in % scale, position your multimeter's rotary switch
position to
listed in the Measuring AC or DC Current section. Press and hold
second to scroll through the options until
display.
Table 2-13
Legend
mA
– The 4-20 mA current loop output from a transmitter is a type of electrical signal that is
NOTE
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.
Figure 2-28
86
and set up your multimeter to measure DC current by following the steps
mA
Rotary switch positions allowing current measurements in % scale
Default function
DC mA (or μA)
4-20 mA % scale display
for more than 1
(or ) is shown on the right side of the
Function when Shift is pressed
Esc
Scrolls between
– AC mA (or μA)
– AC+DC mA (or μA), or
– DC mA (or μA)
Keysight U1281A/U1282A User's Guide