PN A51387A
B
4-16
Selecting Analysis Settings: SOM and SOP
Using a Standard Operating Method (SOM)
1.
In the Size Bins field, enter the number of bins you want to use, or select the number of bins
from the drop-down list (from 4 to 400).
2.
In the from and to fields, enter the low and high limits for the range of particle diameter sizes
you will be analyzing. The defaults are 2% to 60% of aperture diameter (10% to 80% of aperture
diameter for a 2000-µm aperture).
•
The smallest bin must be greater than or equal to sizing threshold (normally, 2% of aperture
diameter or 10% of aperture diameter for a 2000-µm aperture).
•
The largest bin must be less than or equal to 60% of aperture diameter.
3.
In the Bin Spacing pane, select how the Multisizer 4 software will determine bin spacing:
•
By an incremental count of particle diameters (Linear Diameter)
•
By a geometric progression of particle diameter sizes (Log Diameter)
•
By a linear progression of particle volume (Linear Volume)
•
By a geometric progression of particle volume size (Log Volume)
4.
In the Options pane, select one or both of the following options:
•
Pulse Edit. Select this option if you have a narrow distribution and would like to ensure
accurate analysis results by eliminating large pulses. Particles that do not pass through the
center of the aperture tend to produce wider and larger pulses. Pulse Edit removes the
widest pulses from statistical analysis and display results. When the ratio of largest bin
diameter to smallest bin diameter is greater than 6, a warning message appears.
•
Use Shape Factor. Select this option if you would like to match your results to another
particle sizing instrument, or if you need to adjust analysis results based on a known factor.
Entering a shape factor of 1.03, for example, increases particle diameter by 3%.
5.
Click
(
2% to 60%
)
to select a size range from 2% to 60% (or
(
10% to 60%
)
to select a size range
from 10% to 60% for a 2000-µm aperture).
6.
Click
(
Defaults
)
to return the settings to Multisizer defaults.
Summary of Contents for Multisizer 4
Page 12: ...xii List of Figures ...
Page 14: ...xiv List of Tables ...
Page 22: ...PN A51387AB xxii Introduction Before You Start Warnings and Cautions ...
Page 42: ...PN A51387AB 1 20 Analyzer Overview Preparing the Analyzer for Sample Runs ...
Page 160: ...PN A51387AB 6 16 Analyzing a Sample Using Blank Runs ...
Page 232: ...PN A51387AB 10 8 Regulatory Compliance Additional Security Features ...
