294 AO2000 CONTINUOUS GAS ANALYZERS | OI/AO2000-EN REV. B
Limas11 IR, Limas21 UV: Aluminum sample cell cleaning
When should the sample cell be cleaned?
Sample cell contamination can result in unstable measurement values due to
low lamp intensity (see section "Limas11 IR, Limas21 UV, Limas21 HW: Trou-
bleshooting" (see page 339)).
Status messages
When beam intensity becomes too low the appropriate status messages
(see page 322) will be displayed.
Requisite material
• For cleaning: Neutral detergent, deionized water, ethanol
• For drying: Oil- and dust-free (instrument) air or nitrogen
• Spray bottle
• 2 plugs for sealing the sample cell
• 2 Pieces of FPM/FKM tubing or PTFE pipe
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