Metrohm NIRS XDS RapidContent Analyzer - Manual (Page 41)

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7
Instrument Diagnostics
Vision provides diagnostics for instrument setup, which must be performed before use of the
instrument for analysis. Following these diagnostics, another set of diagnostics is provided to
evaluate the ongoing performance of the instrument. These are explained in the sections that follow.
The instrument must be set up with the Iris Adapter for these diagnostics, as small round sample cells
are used. See section 5.2 for instructions on how to remove the Sample Carrier and install the Iris
Adapter.
7.1 Setup Diagnostics
Before use of the XDS Analyzer, Project Options must
be set up in Vision Software.
The “Options” for a given Project may be set. To reach
this menu, click on Configure, Options. The menu
shown at right is the default set of selections. A brief
explanation follows:
Instrument must stabilize before data acquisition: This
prevents spectral acquisition if the instrument is cold.
Performance Test must pass before data acquisition:
This prevents the user from taking data on a non-
functional instrument.
Run performance test after wavelength linearization:
Forces user to run test sequentially. This is not
necessary with XDS.
Use Auto-Linearization:
Maintains correct wavelength registration
automatically, using internal wavelength materials to
keep instrument in precise adjustment over time.
Reference Standardization:
Used to create a virtual 100% reflectance reference, using a traceable photometric standard. This is
explained in the next section. This feature must be used to assure method transferability.
Blank Correction:
This is not used on this instrument. It applies only to the XDS Rapid Liquid Analyzer.
Master Standardization:
This method is not used with XDS. Do not select.
Use Instrument Calibration (XDS only)
This is a method to adjust the instrument wavelength profile to an external, traceable wavelength
standard. This feature must be used to assure method transferability.
Use Window Correction (XDS only):
This feature is used only with XDS Process instruments that operate with Transmission Pair probes.
Do not select.