Grant Instruments
30641 V1.3
Yoyolog
Page 8
Operating Manual
4.1
Installing the batteries
The logger’s power supply is provided by a 3.0V lithium battery (CR2477N).
Optionally for high-temp-applications a CR2450HT battery can be supplied.
The device offers internal battery monitoring. YoyoView will indicate when the battery
will require replacing. In addition, the LED flashing periodically indicates the need for
the battery to be replaced (see chapter 0, understanding LEDs for further information).
In order to insert a battery into the datalogger, unscrew the back cover of the logger
then insert the battery keeping the correct polarity – negative pole downwards.
When the battery has been fitted after a few
seconds the LED on the front of the logger will
start flashing in red/green/blue to indicate it is
operating.
The battery life depends mainly on the logging
interval selected. The table gives an overview for
typical intervals.
.
yoyo-Logger
Interval
Battery life
>1 min
4 years
10 sec
230 days
1 sec
25 days
Some other factors reduce battery life. E.g., low temperatures decrease battery life.
Downloading data or operation in MeterMode will also cause an increased energy
consumption, which further decreases battery life.
