106 . OilExpress 4 System User's Guide
If enabled, the empty cell spectrum is used to correct sample spectra for contributions by the
flow cell, such as reflection losses. If you do not chose to include an empty cell correction for
your spectra, reported soot values may be different between instruments and have an
upwards bias.
It is important that the empty cell spectrum is collected while the cell is clean and dry and,
therefore, this must be done before you prime the autosampler or before you perform a
pathlength calibration.
The empty cell spectrum is collected using a Macro in Spectrum software.
NOTE: The macro was installed to the C:\pel_data\macros folder during your OilExpress 4
System installation, and has the file name
OilExpress Empty Cell.prc
.
To collect a new empty cell spectrum:
1.
Ensure that the sample shuttle and flow cell are installed in the spectrometer.
2.
Exit OilExpress 4 software.
3.
From the Start menu select
Programs
;
the
PerkinElmer Applications
group; the
Spectrum
sub-group and then the
Spectrum
application.
OR
Double-click the Spectrum shortcut icon
on the desktop.
The Spectrum start-up splash-screen is displayed, followed by a dialog that may require
your login details:
Summary of Contents for OilExpress 4
Page 1: ...OilExpress 4 Oil Condition Monitoring System User s Guide MOLECULAR SPECTROSCOPY ...
Page 5: ...Introduction ...
Page 17: ...Warnings and Safety Information ...
Page 27: ...Overview of the OilExpress 4 System ...
Page 67: ...Getting Started with OilExpress 4 ...
Page 95: ...Maintenance and Troubleshooting ...
Page 144: ...144 OilExpress 4 System User s Guide ...
Page 145: ...Appendices ...
