― 44 ―
― 43 ―
5-10
「
」
,
「
」
•
DC current (m
,μ
,
) measurement
•
AC current (m
, μ
,
)/Frequency(Hz)
simultaneous measurement
•
DC current (m
,
μ
,
)/AC current (m
,
μ
,
)
simultaneous measurement
•
DC+AC current (m
,
μ
,
)/AC current (m
,
μ
,
)
simultaneous measurement
•
% 4
~
20 mA measurement
1. Do not apply any voltage to the measuring terminals.
2. Be sure to connect the meter in series with the load object.
3. Do not apply any input exceeding the max. rated current.
4. First turn off the circuit to measure, then cut the part. Connect
the test leads of the meter properly in series with the circuit.
WARNING
5-10-1 Current (mA/μA)/% 4
~
20 mA measurement
(m
, m
, m
, μ
, μ
, μ
Max. rated input current 500 mA dc/ac)
1) What to measure
•
m
/% 4
~
20 mA: Instrumentation loop current
•
m
, μ
(DC current): DC circuit current
•
m
, μ
(AC current): AC circuit current
•
m
/m
, μ
/μ
(DC current component/AC current component)
•
m
/m
, μ
/μ
(DC/AC superimposed signal current/AC current
component)
•
Hz (Frequency): Measuring current frequency
2) Measuring ranges
mA : 50.000 mA and 500.00 mA
μA : 500.00 μA and 5000.0 μA
3) Measuring procedure
①
Set the function selector to
or
, then press the
SELECT button to select [m
/% 4
~
20 mA
], [
m
/m
],
[m
/m
], [
m
/ Hz
] for mA range , or select [
μ
],
[μ
/μ
], [
μ
/μ
], [
μ
/Hz
] for μA range.
②
Connect the red plug of the test lead to
measuring
terminal and the black one to the COM terminal.
③
Connect the test pins (red and black) in series with the circuit
to measure.
・
m
,μ
: Connect the black test pin to the lower electric
potential side of the circuit to measure, and the red test pin
to the higher electric potential side in series with the object.
・
m
/μ
,
m
/μ
: Connect the test pins (red and black) in
series with the circuit to measure.
④
Read the display.
Correct way
Wrong way
Power source
Load
Power source
Load