HT instruments SIRIUS89N - Manual (Page 10)

SIRIUS89N
EN - 8
CAUTION
For recordings (ANALYSIS and AUX function) use ALWAYS the external
power supply adapter (optional code A0050) even the instrument allows the
operator to perform a recording using internal batteries. If during a recording
the external power supply adapter is de-energised, 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). For 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. Particularly:
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 pressure 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 pressure 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 are guaranteed for one year.
3.4. STORAGE
In order to grant the accuracy of the measurements, after a period of storage in extreme
environmental conditions, wait for the time necessary so that the apparatus is back to
normal measuring conditions (see environmental specifications listed in paragraph 14.4).