AUX air conditioner service manual
meter pen of the clamp meter can be freely used without consideration of the selection between
positive and negative pole. When measuring the direct current voltage, turn the on-off switch to the
category of the DCV (DC voltage) , pay attention to select a measurement range larger than the
voltage to be measured, and confirm the polarity of the voltage to be measured. During the
measurement process, connect the red pen to the positive pole and the black pen to the negative pole of
the voltage. Otherwise, the clamp meter may be damaged by wrong connection.
⑵Measure the alternating current value
Rotate the on-off switch to the proper measurement range of the alternating current (ACA) firstly.
During measurement process, put the electric cable to be measured into the clamp type mouth of the
clamp meter, and the reading panel of the meter will show the electric current value of the cable basing
on the electromagnetic induction theory.
⑶Measure the electric resistance
Turn the on-off switch to the proper measurement range. Before measuring, connect the two meter
pens directly with each other (short circuit), and the figure shows on the reading panel shall be 0Ω
and to be accompanied by the tweet sound. If the figure is not 0Ω, it means the clamp meter is
damaged already or short of electric power. For the object electric resistance to be measured, the figure
displays on the reading panel is its electric resistance value after connecting the meter pens to the two
ends of the object resistance item.
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Picture 6-8: digital clamp meter
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