62 . Spotlight 150 User's Guide
To refit the lower cassegrain after use
1.
Raise the stage to its highest position and ensure that the stage is centered.
Before moving the stage up from the Park or Lower park positions you must ensure that
the stage is centered. The calibrated rules marked on the stage can help with this. The
X-axis should be positioned at about 115 mm and the Y-axis should be positioned at
about 10 mm.
2.
Choose
Zero
in the Correction section of the Setup Microscope tab.
The lower cassegrain moves to the position where the infrared beam is focused if no
sample is on the stage.
3.
Make sure that the cassegrain is correctly seated.
4.
Place the gaiter over the cassegrain if the purge facility is required.
5.
Slide the cassegrain assembly back into the dovetail connector, as far as it goes.
NOTE:
To make replacement easier, pull the locking lever gently.
6.
Tighten the locking lever.
Collecting a Spectrum in an Inert Atmosphere
The 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.
WARNING
Do not use flammable gases for purging.
Parts of the purging system
Some parts of the purging system are shown in Figure 23.
Figure 23 Parts of the purge system
Summary of Contents for Spotlight 150
Page 1: ...Spotlight 150 User s Guide MOLECULAR SPECTROSCOPY ...
Page 5: ...Introduction ...
Page 11: ...Warnings and Safety Information ...
Page 23: ...Overview of the Spotlight 150 ...
Page 32: ...32 Spotlight 150 User s Guide ...
Page 33: ...Getting Ready to Use the Spotlight 150 ...
Page 45: ...Preparing Samples ...
Page 58: ...58 Spotlight 150 User s Guide ...
Page 59: ...Techniques for Collecting Spectra ...
Page 94: ...Maintenance ...
Page 102: ...Appendices ...
