AEMC 501N, User Manual

Page: 19 / 56

Clamp-on Meter Models 501 and 503
17
4.5 DC Current Measurement
(503 only)
NOTE: Remove the test leads before measuring current
• Turn the rotary range switch to the range.
• If needed, the display may be “zeroed”. Press the
ZERO button to zero the reading. Note that the meter
enters the 40A manual range mode when zeroed. If
the measured current is greater than 40A (OL dis-
played), the user needs to manually select the 400A
range (see Manual Range procedure § 4.1.2), and
then zero the probe again.
• Press the lever to open the jaws.
•
Clamp the jaws around the conductor to be measured.
• If reading is unstable and is hard to read, push the
HOLD button and read the measurement.
WARNING:
Immediately unclamp the meter
from the conductor under test if overload " "
is displayed.
0
CAT
II
600V
AUTO
A
5 00
!
COM
CAT
II
600V
!
OFF
A
A
V
Ω
®
I N
S T
R
U M
E N
T S
HOLD
RANGE
Press 1 Sec
H
ZERO
MOD
EL 5
03
CLA
MP
MET
ER
600V CA
T II
300V CA
T III
400A