4 cleaning of direct light window, Cleaning of direct light window – Metrohm NIRS XDS Process Analyzer – DirectLight/NonContact User Manual

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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.

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