9
Storage Capacity
The storage capacity is over 73,000 readings of all 4 parameters (UV, Visible light,
temperature and humidity). The other values (e.g. dewpoint and µW/Lumen) are
calculated from the 4 saved parameters.
The storage capacity is shared between the data files. So leaving old data files on the
flash drive will limit the space available for new data.
Because the data is saved as text, the larger the data values, the more memory each
reading takes (for example “100000” has more characters than “1.1”). The maximum
space per set of 4 readings is 28 characters (usually it will be much less). The internal
flash memory has a capacity of 2,048,000 characters.
Show Status
To see how much data has been saved, when logging was started etc select
Set\Data log\Status and the information is shown on the screen for 30 seconds. Press
the X button to clear the screen sooner.
Start Logging
To start logging press Set\Data log\Start and then select the log period and press Set
again. The unit turns off and logging starts at the beginning of the next minute, 10
minutes or hour as appropriate.
The Log Period is how often readings are taken, if the log period is short then memory
space will run out sooner.
The log start time will be delayed so that measurements are taken at the start of each
minute, 10 minutes, hour etc.
Every time logging is started a new file is created on the internal USB flash drive (see
above) with a name of the form MMddhhmm.CSV where:
MM=month
dd=day
hh=hour
mm=minute
The unit can be used while logging.
Stop Logging
To stop logging press Set\Data log\Stop. This stops further readings being taken.
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