Sequoia LISST-PORTABLE XR, Руководство пользователя

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10 LISST-Portable|XR manual
Set the mixer speed and duration. When setting the mixer speed, it is important to observe if the
mixer creates bubbles when mixing. If it does, make sure that the mixing chamber is full, or
reduce the mixer speed. Be careful that the mixer speed is not too low, as this can cause
particles to settle and not be measured.
Set the power and duration for the ultrasonic probe (if installed). The ultrasonic probe ensures full
dispersion of all particles in the mixing chamber so that the measured size distribution is that of
the single particles.
The processed data can be viewed in four different ways:
1) as a graph showing the volume distribution
2) as a graph showing the cumulative distribution
3) in a table format
4) as a statistics summary.
Select which of these four options will be shown
first when the results are being displayed after
being processed. The other three options will always be accessible through a tabbed display.
The current storage mode shows together with the base name.
Push the Single Sample button to store the results from each measurement in separate data
files.
Push the Multiple Samples button to store several measurements in the same data file.
Enter a base name (file name)
with a length of maximum 6 characters, e.g. ‘Sand’. The
instrument will subsequently add the sample number to the base name if the data storage mode
has been set to Single Sample (e.g Sand01.asc, Sand02.asc), up to 99. If the storage mode is
Multiple Samples, the instrument will store each new sample in a new line in the file (Sand.asc).
The
button is the backspace button.
If you wish to have the instrument output the concentration of your sample in mg/l, you must
enter the effective density of the particles. Set this number to 0 if you do not know the effective
density.
If you wish, you can enter a note for this particular SOP. For example a common sample location
or type of samples.
Select the control mode. In Automatic Mode, the instrument will not allow you to control the mixer
and ultrasonic probe when you analyze the sample. Select Manual Mode for full control over
these settings. CAUTION: In Manual Mode, there is no guarantee that all samples are processed
and measured in the same manner.
After completing these steps, the instrument will load the appropriate files and display the main
menu.