User`s guide

2 Making Measurements
Measuring AC or DC Current
78 U1273A/U1273AX User’s Guide
% Scale of 4-20 mA or 0-20 mA
To display the current measurement in % scale, position your
multimeter’s rotary switch position to and set up your
multimeter to measure DC current by following the steps
listed in the “Measuring AC or DC Current” section.
Table 2- 1 8 Rotary switch positions allowing current measurements
Legend Default function Function when is pressed
DC A (or mA)
Cycles between
• AC A (or mA),
• AC+DC A (or mA)
• % Scale of 4-20 mA (or 0-20 mA),
or
• DC A (or mA)
S
h
i
f
t
V
i
e
w
E
s
c
NOTE
• 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 2-19.