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70 . Spotlight 200 User's Guide
Collecting a Spectrum in an Inert Atmosphere
The optional purge system enables you to purge the spaces around the sample and the
infrared beam (typically with nitrogen or dry air), to provide an inert atmosphere.
Do not use flammable gases for purging.
WARNING
Parts of the purging system
Some parts of the purging system are shown in Figure 22.
Figure 22 Parts of the Purge System
The purge system consists of:
•
The gas inlet connector on the metal plate at the rear of the microscope and the
connector at the rear of the spectrometer;
The purge coupling molding connecting the spectrometer to the microscope;
•
The lower purge gaiter under the lower cassegrain.
•
When all of these parts are in place, the gas entering through the inlet displaces air from the
path of the infrared beam.
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