Fluke 725Ex - Using Measure Mode; Measuring Electrical Parameters (Upper Display); Current Measurement with Loop Power

Using Measure Mode
19
Using Measure Mode
Measuring Electrical Parameters (Upper Display)
To measure the current or voltage output of a transmitter,
or to measure the output of a pressure instrument, use the
upper display and proceed as follows:
1. Press
l to select volts or current. LOOP should
not be on.
2. Connect the leads as shown in Figure 7.
Current Measurement with Loop Power
The loop power function activates a 12-V supply in series
with the current measuring circuit, allowing the user to test
a transmitter when it is disconnected from plant wiring. To
measure current with loop power, proceed as follows:
1. Connect the Calibrator to the transmitter current loop
terminals as shown in Figure 8.
2. Press
l while the Calibrator is in current
measurement mode. LOOP appears and an internal
12-V loop supply turns on.
V mA
LOO P
V mA
TC RTD
˚
C
˚
F
Hz
100%
25%
25%
RECALL
ZERO
MEAS
SOURCE
STORE
SETUP
0%
MULTIFUNCTION
PROCESS CALIBRATOR
725Ex
Black
Red
2004.1573266
LR110460
Zone 0 AEx ia IIB 171 C
I.S. Class I Div 1, Groups B,C,D
aly42f.eps
Figure 7. Measuring Voltage and Current Output