Foss NIRS DA1650, User Manual

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NIRS™ DA1650
2:6 User Manual 6008 1286 / Rev. 8
Large Cup Extension
The "large cup extension" fits on the bottom part of the Large sample cup. It can be
used when a larger sample volume is required in order to scan a representative
portion of the sample.
Slurry Cup
The best choice for samples that tends to stick to the cup. Also the preferred choice
for samples warmer than 50 °C. Should only be used for homogenous samples.
Petri Dish Holders
For wet, sticky or otherwise unpleasant samples. Can be used with plastic or glass
petri dishes. The absorbance spectrum of the petri dish has to be taken into account
while developing calibrations.
Gold Reflector
The gold reflector is suitable for homogenous, fairly transparent liquid samples.
Liquid samples should preferably be analysed at a well defined temperature since
temperature have a large influence on the shape of the moisture spectrum. When the
sample is placed in the cup, the gold reflector is placed over the sample. The sample
will quickly heat up or cool down to the temperature of the cup and gold reflector.
Keeping the cup and reflector at the same temperature thus ensures consistent results.
Depending on the product analysed, the required path length may vary. For NIRS
DA1650 there are gold reflectors giving a path length of 0.1, 0.2, 0.5and 6 mm gold
reflectors. To get optimal performance the maximum absorbance level should be
below 2 AU. If needed, you can ask your FOSS representative for recommendations.
Fig. 2:6Gold reflector
NIRS Ring Cup
A holder that allows for use of the NIRS ring cup is available. This permits scanning
of an ISI ring cup on the NIRS DA1650. Primary use is for cross-standardization
purposes between NIR platforms.
Fig. 2:7NIRS ring cup
A Gold reflector