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2.2 Current Measurement
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NOTE
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2.2 Current Measurement
2.2.1 Measuring DC Current (DC A)
Correct measurement may be impossible in the
presence of strong magnetic fields, such as near
transformers and high-current conductors, or in the
presence of strong electromagnetic fields such as
near radio transmitters.
Attach the clamp around only one conductor.
Single-phase (2-wire) or three-phase (3-wire) cables
clamped together will not produce any reading.
The display may show a measured value bigger than
the actual value due to a magnet:c field interference.
The interference is less than 2 A during the
measurement.
1. Press
button to display
.
2. Switch between the auto range and the manual range
as necessary.
3. Please execute auto zero adjustment before
measuring. Press
0ADJ/RESET
to make an auto-
zero-adjustment (without clamping the measured
conductor inside the clamp sensor) with the clamp
sensor firmly closed. (see 3.1.1: Auto-zero-
adjustment function).
ADJ
annunciator lights to indicate that auto-zero-
adjustment is complete. (If you make an auto-zero-
adjustment in the auto range, two current ranges will
be adjusted in this mode.)