Amprobe DMIII-Multitest Power-Quality-Recorder - Manual (Page 10)

AMPROBE
DMIII MULTITEST
EN-8
WARNING
For recordings (POWER QUALITY function) ALWAYS use the external
power supply adapter (code DMT-EXTPS) even the instrument allows the
operator to perform a recording using internal batteries. If during a recording
the external power supply adapter is de-energized, the instrument will
continue the recording using the internal battery power until the batteries
are exhausted (the data stored up to the point the instrument shuts down
won’t get lost). Because of this we recommend you ALWAYS insert a new
set of batteries before a long recording.
The instrument uses sophisticated algorithms to prolong the battery life. Specifically:
 The instrument switches OFF the backlight Automatically after 5 seconds.
 If the instrument is displaying in real time (and the external power supply adapter is not
connected), after about 5 minutes from the last key press or switch rotation the
instrument turns off automatically ("AUTOPOWER OFF" procedure).
 If the instrument is recording or is measuring energy (and the external power supply is
not connected), after about 5 minutes from the last key press or switch rotation the
instrument starts a special procedure to save the batteries ("ECONOMY MODE"): the
instrument keeps recording but the display is turned off.
3.3.
CALIBRATION
The instrument fulfils the technical specifications listed in this manual. The performance of
the specifications is guaranteed for one year.
3.4.
STORAGE
In order to maintain the accuracy of the measurements, after a period of storage in
extreme environmental conditions, wait the necessary time for the apparatus to return to
normal operating conditions (see environmental specifications listed in paragraph 14.4).