14 . Universal ATR Sampling Accessory User’s Guide
Obtaining a Sample Spectrum with Spectrum
Software
The following pages outline the procedure for obtaining a sample spectrum using a
Spectrum Two instrument fitted with a UATR and running Spectrum software.
For further information on how to use Spectrum software, see the on-screen help provided.
NOTE:
When you first fit the accessory, the software automatically sets default scan
parameters to values that are appropriate to the UATR.
Obtaining a spectrum of a solid sample, using the
pressure arm
1.
To view or change any of the instrument parameters, select
Instrument
from the Setup
menu.
The Setup Instrument pages are displayed in the Dialog Pane at the bottom of the
workspace. Figure 6 on page 10 shows the Setup Instrument Basic tab.
2.
If you need to collect a background spectrum, ensure that the top-plate is clean and
then click
, on the toolbar, to collect a background spectrum.
Spectrum automatically alerts you when you need a new background, and can be
configured to request a new background at set intervals (on the Setup Instrument Data
Collection tab).
NOTE:
If you want to collect a background that will be added to the Sample View and can
be saved separately, then select Background as the
Scan type
on the Setup
Instrument Basic tab.
3.
Push the pressure arm back, until it is clear of the top-plate.
4.
Slide the appropriate shoe over the end of the shaft until it clips into place.
5.
Place your sample in the center of the top-plate, over the crystal.
6.
Swing the pressure arm across, so that the end is positioned directly above the sample
and the crystal.
CAUTION
ATTENTION
Do not use the pressure arm without a shoe. The high point loads may
damage the crystal.
Avoid using thick samples that require you to unscrew the pressure arm
to the level of the o-ring.
N'utilisez pas le bras de pression sans une chaussure. Les charges
élevées peuvent endommager le cristal.
Évitez d'utiliser des échantillons épais qui vous obligent à dévisser le bras
de pression au niveau du joint torique.
