Metrohm NIRS XDS Process Analyzer – DirectLight/NonContact - Manual (Page 129)

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8. Close and latch the door of the XDS
Process Analytics Instrument.
9. Restore power to the instrument.
10. Connect to the instrument from Vision. Allow time for Purge System activation (if so
equipped) plus about 20 minutes for temperature stabilization.
11. Run Performance Test to verify instrument operation. Because no optical components were
changed, there is no requirement to run other tests.
12.4 Cleaning of Direct light window
Violent cleaning procedures are used in many applications such as Dairy or meat. After drying,
carbonization stains remain on the window. In order to keep the window clean, use citric acid (3%)
to clean the windows every day before using the instrument. Dirt and stains on the windows will
have effect on the performance of the instrument since the spectras will be contaminated.