MI 3250 MicroOhm 10A Safety and operational considerations
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2.2 Battery and charging
The instrument uses six alkaline or rechargeable Ni-Cd or Ni-MH battery cells. Nominal
operating time is declared for cells with nominal capacity of 3500 mAh.
Battery condition is always displayed in the upper right display part.
In case the battery is too weak the instrument indicates this as shown in figure 2.1.
Figure 2.1: Discharged battery icon
The battery is charged whenever the power supply is connected to the instrument. The
power supply socket is shown in figure 2.2.Internal circuit controls charging and assures
maximum battery lifetime.
Figure 2.2: Power supply socket
The instrument automatically recognizes the connected power supply and begins
charging.
Indication of battery charging
Figure 2.3: Charging indication
When connected to an installation, the instruments battery compartment can
contain hazardous voltage inside! When replacing battery cells or before opening
the battery compartment cover, disconnect any measuring accessory connected
to the instrument and turn off the instrument,
Ensure that the battery cells are inserted correctly otherwise the instrument will
not operate and the batteries could be discharged.
If the instrument is not to be used for a long period of time, remove all batteries
from the battery compartment.
Alkaline or rechargeable Ni-Cd or Ni-MH batteries can be used. Metrel
recommends only using rechargeable batteries with a capacity of 3500mAh or
above.
Do not recharge alkaline battery cells!
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