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Chapter 1Product Outline
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During Recording (when measured at
the no-voltage contacts)
Standby for
Recording Start
(Power Save
Function)
Power Save
Function
ON
OFF
Recording Interval
--
1 sec
10 min.
or more
Battery Life
15 days or
longer
4 months
or longer
6 months
or longer
15 days or
longer
1.3 Battery Life
The service life of the batteries used in the 3639-20 varies
depending on the recording interval, power save function
setting, measurement-value display during recording,
temperature and humidity, and the like. The table below
gives the approximate battery service lives with an average
pulse count of 5 or less per second, and at 23 5 .