Foss NIRS DA1650, Руководство пользователя

Страница: 32 / 72

NIRS™ DA1650
4:2 User Manual 6008 1286 / Rev. 8
The most likely reason for selftest to fail is that the instrument is not warmed up
properly. Please wait 5-10 minutes and repeat the selftest by going to the Care menu
and select Instrument Diagnostics.
If the problem persists, please contact your local FOSS representative and also
forward the diagnostic report to them.
You can still carry out analysis but every result will be highlighted in yellow, with a
warning stating that the Startup test was not completed.
It is possible to interrupt the startup test before it is completed. This could be done
when you just want to start the instrument in order to change configuration in
FossManager or other actions that are not real analysis.
Fig. 4:3
You can still carry out analysis after cancelling the test but every result will be
highlighted in yellow, with a warning stating that the Startup test was not completed.
4.2 Analysis Procedure
4.2.1 Sample Preparation
Grinding a sample prior to analysis gives two advantages:
• The sample analysed will be more representative on the whole due to the mixing
that is obtained during grinding.
• The possible errors that can be obtained when filling the cup will be decreased
due to the homogeneity of the sample.
When analysing samples in the form of pellets or samples having a wide range of
particle sizes, care has to be taken to avoid segregation of small and large particles
when filling the cup.