Dickey-John Instalab 700 NIR, Operator'S Manual

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OPERATOR’S MANUAL
Instalab 700 NIR Product Analyzer
11001-1574-201107
CALIBRATIONS 11
CALIBRATIONS
Calibrations can be obtained from multiple sources:
• DICKEY-john (calibrations for common products)
• Universities (development of new calibrations)
• User (development of own calibrations for specific product line)
NOTE: DICKEY-john has developed
some universal calibrations for
certain products. These may be
obtained from your
DICKEY-john sales
representative.
UNIVERSAL CALIBRATIONS
Calibrations developed for common products and constituents are referred
to here as universal calibrations. Typically used in any Instalab that has the
required filters by making a sample bias adjustment.
Use the following procedure to enter, store, and test a universal calibration.
Adjust the machine bias to make the predictions agree with the reference
analysis. For each constituent calibration, other than moisture, pay careful
attention to the moisture basis. Lab results must be adjusted to or
compatible with this moisture basis. Refer to the Appendix for moisture
basis explanation.
1. Enter the calibration file via a USB memory device.
2. Randomly gather 20 samples at different times of the day from the
same point of the operation the Instalab will be monitoring.
3. Grind, if required, and mix each sample and divide each mixed sample
into three parts: two parts for laboratory analysis and one part for the
Instalab analysis.
4. Perform the laboratory analysis separately on the two parts of each
sample comparing the results. Do not use samples whose laboratory
analysis differ enough that the accuracy is suspected.
5. When both analyses for the same samples are close enough to ensure
laboratory accuracy, average the two results.
6. Log the laboratory analysis and Instalab analysis on the Instalab Bias
Adjustment Worksheet.