Kaiweets HT208A - Page 15

the clamp meter beeps again and switches off automatically. Press any key to restore
the clamp meter to operating status. The symbol () appears on the display. To deacti-
vate the automatic switch-off, hold down the “FUNC.” key for more than 2 seconds and
switch on the clamp meter at the same time. The symbol ()) disappears. Restart after
switching off the meter, the automatic switch-off can be restored.
Auto-ranging
The meter automatically selects the measuring range that is best suited for the mea-
surement performed. The measuring unit and resolution are adjusted at the same time.
AC zero input behavior of True-rms meters
Unlike averaging meters, which can accurately measure only pure sinewaves, True-rms
meters accurately measure distorted waveforms. Calculating True-rms converters
require a certain level of input voltage to make a measurement. This is why ac voltage
and current ranges are specified from 5 % of range to 100 % of range. Non-zero digits
that are displayed on a True-rms meter when the test leads are open or are shorted are
normal. They do not affect the specified ac accuracy above 5 % of range.
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