Dc Current Measurement - Amprobe ACD-400 User Manual

4.3.4. DC Current measurement

• Make sure that all the test leads are disconnected from the meter's
terminals for current measurement.
• When measuring current, any strong current near the clamp jaws will
affect the accuracy.
Current direction
Fig. 7: Use of clamp during DC current measurement.
A
1. Select " position.
"
2. If the display doesn't read zero, press the ZERO key. If the current value is over 40A
press R-H key to select 400A range before zeroing operation.
3. Open the clamp and put the test conductor in the center of the clamp jaw (ref.
paragraph 4.1.2 ). Assure that the current flow indicated by the label inside the
inductive clamp jaw as shown in Fig. 7.
4. In "AUTO" range mode the instrument will automatically detect the appropriate range.
5. Press R-H key you can select manually the measurement ranges in cyclic order.
Press R-H key 2 seconds to return to the AUTOMATIC range selection.
O.L
6. The " " symbol means that the measured quantity is higher than the selected
range. Press the R-H key to select a higher range.
7. If the reading is difficult, press D-H key to hold the obtained value. To exit this mode
press the D-H key again.
WARNING
Correct
EN - 13
Incorrect
ACDC-400
Current direction