Hioki 3284 HiTester, Instruction Manual

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Chapter 2 Measurement Procedure
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NOTE
○ ×
2.2 Current Measurement
2.2.1 Measuring DC Current (DC A)
･
Accurate measurement may be impossible in
locations subject to strong external magnetic
fields, such as transformers and high-current
conductors, or in locations subject to strong
external electric fields, such as radio transmission
equipment.
･
Make sure that only one conductor is clamped in
the center of the clamp sensor. If you clamp
single-phase (2-wire) or three-phase (3-wire) lines
together, it will be impossible to measure.
･
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 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
2.5.1: 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.)