Hioki 9279, Инструкция по эксплуатации, Страница: 44 / 54

14
__________________________________________________
Chapter 2 Measurement Procedure
_____________________________________________
NOTE
After powering on, press DMAG.
It is possible to magnetize even if pressing
DMAG during input.
Always make sure that the clamp jaws are
completely closed during demagnetising.
Demagnetization occurs for about 3 seconds.
If an excessive amount of current was input so
that one attempt at demagnetization does not
completely rid of the remanence, open the
clamp jaws and press DMAG, then close the
clamps, and press DMAG again.
In case of closing the clamp and if the facing
surface of the core is subjected to shock,
offset maybe output. In this case, press the
DMAG switch with no input on the clamp.
When measuring DC current and applying
exceed continuous the maximum permissible
input, the malfunction may occur. Press the
DMAG switch with no input on the clamp, to
return to normal.
If it does not return to normal condition, or
even pressing DMAG, the magnetic is
remained in the core, contact your dealer or
Hioki representative.
2.2 Demagnetizing (DMAG)
After measuring rush current or similar of AC or
DC current measurement, micro voltage is
output even if there is no input on the clamp.
This is caused by the core characteristic using
the clamp and magnetic is remained in the
core. This remanent cause measuring error, but
it can be removed by pressing DMAG with no
input onto the clamp.