35
4 Power supply
4.3
Battery alarm
As soon as the remaining capacity of the batteries gets low, a
battery alarm will go off:
Level 1: Battery almost empty
–
Battery capacity
symbol flashes
–
Audible signal (one-off)
– Operating signal doubles
– Remaining operating time: approx. 15 min
Level 2: Battery empty
– Blank display apart from
Battery capacity
symbol
– Continuous audible signal
– Measuring mode unavailable
– Device shuts off
4.4
Replacing disposable/rechargeable batteries
A
WARNING!
The battery compartment must only be opened outside
of explosive areas.
A 2.5 mm Allen key (supplied) is required to open the battery
compartment on the back of the device.
1. Loosen the two screws securing the battery compartment. Re-
move the screws by repeatedly turning them alternately a short
way; this ensures that the battery compartment does not twist.
2. Lift out the battery compartment.
3. Remove the disposable/rechargeable batteries and insert new
ones. Ensure that the batteries are inserted with the correct
polarity.
4.
Replace the battery compartment so it fits neatly into place
and secure firmly with the screws.
5. When you switch the device back on again, you will be asked
which battery type is in use. Enter the correct battery type.
If it takes longer than 120 seconds to replace the batteries, the
date and time will have to be reset the next time you switch the
device on. All the other data will be saved.
