Sper Scientific 800021 RH/Temp SD Card Logger - Manual (Page 29)

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DATALOGGER
4. To finish datalogging, press REC
for longer than 2 seconds. “REC”
will disappear from the LCD to
indicate that datalogging has
ended.
SD Card Data Structure
1. The first time a SD card is used in
this meter, a folder HTA01 will be
generated.
2. If the datalogger is being used for
the first time, a new file
HTA01001.XLS will be generated
under the route HTA01\. After
exiting the datalogger and
executing the function again, the
data is saved to the
HTA01001.XLS file until the data
reach 30,000 data columns. A
new file will then be generated
(i.e., HTA01002.XLS).
3. The folder HTA01\ will hold 99
files. A new route (i.e., HTA02\)
will be generated when exceeding
99 files.