Thermo Scientific TruDefender FT, User Manual, Page: 16 / 56

14
TruDefender FT and TruDefender FTi User Guide Thermo Scientific
2 Scanning
Step 4
Select Go > press the Enter key. The instrument
performs a background check. If the background has
changed since the last scan, the instrument
automatically performs a new background scan.
NOTE
Do not put the instrument in the sample
crusher for the background check.
During a
background scan, the sampling tip must not be
in contact with any sample material.
Step 5
When the background check or the background scan
finishes, the Position Unit screen appears.
Place the sampling tip in contact with the sample (see
the Best Practices table on
page 11 ). If you are using
the sample crusher, place a small amount of the test
substance on the sampling platform, then insert the
instrument (see
page 16 ).
Step 6
To start the scan, select Scan > press the Enter key. The
Scan in progress screen appears. Hold the instrument
steady during the scan.
To monitor the progress of the scan, observe the
progress bar on the bottom of the scan screen and the
signal strength meter. The progress bar displays the
estimated time to scan completion.
When the scan finishes, the instrument displays a result
(see
page 19 ).
TIP
If the scan time is lengthy and the signal
strength meter shows only a few or no bars, the
sampling tip may not be in good contact with the
sample, or the sample may not be scannable by
FTIR.