make REC flash and add the flashing term “LOGGER” at the top right of the display.
This indicates that the instrument is currently storing measured values and their time
stamps in memory.
8.
To pause automatic datalogging
, press the LOGGER SET button once; this action
makes the flashing term LOGGER disappear from the top right of the display and
changes the term “REC” from flashing to constant. Pressing the LOGGER SET button
again resumes automatic datalogging.
9.
To end automatic datalogging
, press the REC/ENTER button and hold it for at least
two seconds. This action causes the “REC” message to disappear.
10.
To log data manually
, set the sampling time to zero using Step 5 of the setup procedure.
Then press the REC/ENTER button once. The display will show the term “REC” on the
top line, a value in the middle, and below it the letter “P” on the left and a number from 1
to 99 on the same line to the right. The number indicates the position on the SD card that
will be used to store manually logged data.
Now press the LOGGER SET button. This will cause the beeper to sound the term
“LOGGER” to briefly appear at the upper right of the display. As in automatic datalogging
mode, in this mode the instrument is storing measurements and their time stamps on the
SD card.
In manual datalogging mode, however, measurements are being stored continuously (with a
sampling time of zero), and their locations on the card can be changed.
11.
To change the storage location of manually logged data
, press the
▼
button once; this
causes the “P” to disappear from the left side of the display and the value on its line to
begin flashing. Once the flashing begins, you can use the
▼
and
▲
buttons to change the
flashing value to any number between 1 and 99. Once you have chosen the storage
location, press the REC/ENTER button to save the setting. This causes the value to stop
flashing and the “P” to return.
12.
To end manual datalogging
, press the REC/ENTER button and hold it for at least three
seconds. This action causes the “REC” message to disappear from the top line of the
display.
Transferring data from the SD card to a computer
After automatic or manual datalogging of measurements, remove the SD card from the meter and
plug it into your computer either directly (if it has an SD card slot) or through an SD card reader.
Because the files containing time-stamped data logs have the file extension .xls, they open in
Microsoft’s Excel application. Figures 3, 4 and 5 show three kinds of Excel presentations: a data-
only screen, a graphics-only screen, and a mixed data/graphics screen.
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