Micromeritics Elzone II 5390 Operator's Manual page 107

New
Correct for 
Coincidence
Subtract Background
Subtract Background
(continued)
Use most recent
background
Size Classes
Distribution
539-42822-01 (Rev B) - Nov 2017
Select this option to have coincidence correction applied.
It is always possible that two or more particles may pass
through the orifice at the same time, this is known as
coincidence. Coincidences cause a portion of the true dis-
tribution to be absent and a distorted distribution of over-
size, spurious particles. The coincidence correction
removes distortion from the distribution and restores the
missing pulses.
This option enables you to subtract any particles that may
have been detected in the background measurement.
When you select this option, be sure to click
choose a background file or select Use most recent
background. If you choose a background file that con-
tains numerous tests, the test that is selected from the
Test drop-down list on the Report Options dialog is the
one that will be used for the background subtraction.
If you neglect to choose a background, you will be
warned at the time of analysis and given another opportu-
nity to select a background. If a background is still not
selected, a "null" background will be used for data reduc-
tion.
The type of background subtraction you use will be
printed in the report header.
Select this option to use the most recent background.
If you wish to use a different background file, deselect
this option and use the
Browse
file containing the desired background.
The options in this group box enable you to specify how
distribution data are binned (sorted).
You can choose to report data as linear or logarithmic
by diameter or volume.
Use the classes field to specify the number of classes
desired, and the range fields to enter a range.
Enables you to choose the manner in which data are pre-
sented; choose one from each column.
Elzone II 5390 Confirm
and
Browse
push button to choose the
4-19