Kett AN-900, Руководство по эксплуатации

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<Appendix >Guidelines for using AN-900 with Maximum Accuracy
1. Preface
In order to keep the minor changes’ effects on the measurement to a minimum, please be sure to
carry out the standard check based on the standard sample at times again when, for example, the
multiple people take the measurements or there is a power failure during the measurements or
when you believe the results to be doubtful or in accurate.
2. Check for standard sample
(1) Standard sample
As a standard sample, short brown and milled rice are included.
(2) Standard value
Before supplying standard samples, the composition values of standard samples have been
recorded were tested at company to confirm the values and then decided upon.
(3) Storage condition of Standard Sample
Standard samples should be stored in cool, dark area like a refrigerator at between 5
℃
~10
℃ . The sample we have supplied has a usable priod, but this presupport its being stored in
cold storage are. It is possible that storing the date in an warm or room temperature area will
cause the standard value changes so please be sure to store it in cool, dark area. Also, be
aware of the mentioned valid period of time concerning the life of the standard sample, and
try to use extremely new grain as the standard sample.
Note : Don’ t freeze standarad sample and put them in freezing-cold strage are like a freezer.
(4) Measure the standard sample
More than half a day before performing the measurements, take standard sample out of the
cold, dark area and put it in the same environment as AN-900. After the sample returns to
normal temperature, perform measurements. Measure the standard sample 3 or 5 times,
find th average values for each composition, and then compensation of each.
For example, in case of moisture as follows.
Here, the difference is 0.2%, so if it is in th normal use mode, there is no need to run the bias
adjustment. If the difference exceeds 0.2%, however, perform the comparrison again with
the same formula. If after doing that the result are again exceeding 0.2%, perform a bias
adjustment. Refere to “6-4 BIAS Adjustment” on P17.
To the best of our abiliies, we have deemed the limit values printed above to be sandard.
Selectable limit values that you will perform fixed bais adjustments on depending on the
type of room in which you are using it.h
Standard AV. measurement Difference
Standard sample 16.0% 16.2% 0.2%
Composition Difference of limit (if value exceeds this, perform BIAS)
Protein 0.3%
Moisture 0.2%