Metrohm NIRS XDS Process Analyzer – MicroBundle - Manual (Page 81)

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This window correction method offers a large
advantage to users running with a probe barrel
permanently installed in a reactor or other vessel. At
initial set-up, the window difference is measured
and stored in the instrument by channel.
At periodic maintenance intervals, the fiber optic
bundle can be removed from the barrel, which is
now permanently installed.
The instrument and fiber optic bundle can be calibrated for wavelength and Reference Standardized
response, without using the Interactance Immersion barrel. After this is done, the fiber optic bundle is
put back into the permanently installed barrel, and the Window Correction is re-applied. This assures
consistent response, without removing the barrel.
The instrument and fiber optics can be calibrated for wavelength and Reference Standardized
response, without using the Interactance Immersion Probe barrel. The Interactance Reflectance probe
barrel is used instead. After this is done, the fiber optic bundle is put back into the permanently
installed Interactance Immersion barrel, and the Window Correction is re-applied. This assures
consistent response, without removing the barrel from the process.
Because the spectroscopic response of various fibers is dependent upon length and other factors,
screens will not be shown. Instead, the message boxes are given, in the order in which they appear.
Be sure the fiber probe end is securely installed into the barrel (outer probe part) and proceed using
this set of instructions.
From the Diagnostics menu, select Create
Window Correction.
NOTE: Window Correction must be enabled
under Configure, Options. When enabled, a new
DCM must be created for Window Correction to
take effect.
Vision requests a standard file. Select the file
shown, from the C:\Vision directory.
This file corrects the fiber optic path for the
effects of the barrel (window) being installed.