5-4
Electrostatic Classifier Model 3082 and SMPS Spectrometer Model 3938
Status Icons
The title bar at the top of the screen displays the status icons described in
Table 5-1 below.
Table 5-1
Electrostatic Classifier Status Icons
Icon
Description
Indicates an error or warning. Press the wrench to see a drop-
down description of the error(s) and/or warning(s).
Indicates that a radioactive neutralizer is installed.
Indicates that an x-ray neutralizer is installed, powered on, and
ionizing. With a slash through the icon, it indicates it is installed
and powered on but not ionizing. Press to toggle.
Indicates that data logging is enabled, slash indicates disabled.
Press to toggle. SMPS mode only.
Indicates that data logging plus raw data is enabled, slash
indicates disabled. Press to toggle. SMPS mode only.
Indicates that the multiple charge correction is enabled, slash
indicates disabled. Press to toggle. SMPS mode only.
Indicates that the diffusion correction is enabled, slash indicates
disabled. Press to toggle. SMPS mode only.
Displayed in firmware versions earlier than 2.0
Indicates sheath flow rate is on and has stabilized at the target
setpoint, slash indicates sheath flow is on but has not yet
stabilized.
Size Distribution Corrections
There are two correction options. Mathematically, they are identical to the
correction options used in Aerosol Instrument Manager Software which go
by the same names.
Choosing the multiple charge correction
enables a mathematical
correction for particles with multiple charges. Since the SMPS sizing
algorithm assumes a particle has only one charge, the effect of multiple
charges on a particle allows the particle to be incorrectly binned into a
smaller-sized particle channel, as multiple charges on a particle increase
its mobility. When enabled, multiple charge correction corrects the sample
data for the effects of the multiple-charged particles. The effects of
multiple-charged particles are most pronounced for particles >100 nm.
View data in both corrected and uncorrected forms to become familiar with
the effect of multiple charges and the limitations of charge correction.
Choosing the diffusion correction
enables a mathematical correction
for diffusion losses of particles in their flow path within the SMPS system. It
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