Foss NIRS DS3, Руководство пользователя

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A sample, ground or unground, is placed in a sample cup which is placed in the
instrument. By means of a motor the cup is turned so that multiple parts of the
sample are scanned. This multipoint reflectance measurement allows for an
accurate analysis of the sample. Especially for inhomogeneous samples like pellets
it is crucial to have a multipoint measurement.
Fig. 4 Sample cup in instrument
All sample cups used with NIRS DS3 / DS3 F fulfil the ISO 12099 requirement of
a quartz window to eliminate drying effects of the interacting sample surface layer.
Analysis can be done with a range of different sample cups. The most commonly
used are the small cup and the large cup. Other cup types are shown in section
2.3.3 Other Cups and Accessories.
The small cup is intended for fine samples in granular or powder form and products
that are easy to compress. When placing the small cup in the sample presentation
unit the holder must be used. (The holder is shown between the sample cups in the
illustration below.)
The large sample cup is intended for unground or coarse samples like whole grains,
pellets or cut silage. The bottom and upper part of the large sample cup are screwed
together and can be taken apart, e.g., for cleaning or replacing the glass if needed.
The bottom part also fit with the Large Cup Extension.
If you are not sure of which cup to use for your application, please contact FOSS.