Chapter 2 – Getting Started
Fitting Batteries
8
Brüel & KjærIntegrating Sound Level Meter Type 2239 A
User Manual
When the battery is full, the battery level indicator is fully
black. As the batteries are used, the level will fall until the
indicator is completely empty. When it is time to replace the
batteries, the indicator will be empty and blinking.
The battery level indicator has five rows of pixels in it (includ-
ing the tip). Each line represents approximately 2.5 hours of
remaining battery time (at room temperature). When the indi-
cator is blinking, there is less than one hour left. In extremely
cold or hot environments, the remaining time may be less.
Caution
It is possible for batteries to explode or leak if they are handled
incorrectly, so:
● For long-term storage, remove the batteries and keep the
sound level meter in a dry place.
● Never mix different makes or types of battery.
● Never mix charged and discharged batteries.
Fig.2.2 Interpreting the battery level indicator
960156e
Batteries full, about 14 hours left
Batteries half full, about 7.5 hours left
Replace batteries, less than 1 hour left
bb221911.book Page 8 Tuesday, July 24, 2001 11:23 AM
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