Metrohm NIRS Analyzer PRO - Manual (Page 67)

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14
Sampling
Once Vision Diagnostics have been performed, the user may take reference and sample spectra. In
Data Acquisition, these actions are performed.
First, click on the Reference icon, which is a white cuvette.
When the Reference spectrum is finished, continue below.
Next, click on the Sample icon, which is a green cuvette.
When the Sample spectrum is shown on screen, it may be saved.
To save the sample spectrum, click on the blue diskette icon.
Vision will ask for product and sample names, and other
information. Please see the Vision manual for full information on
saving spectra.
The green button on the housing is provided to take and store
sample spectra in real time, from the process floor. This is useful
when calibrating the system. In such cases, a “grab sample” may
be taken for lab analysis, and a spectrum taken immediately, so
that the lab analysis corresponds directly to the sample
spectrum.
This sampling method makes the calibration data much more
precise, and minimizes time lags and resulting changes to the
product stream. It is important to note the time and date of the
grab sample, so it can be correlated to the correct spectrum that
will be stored.
When a sample is desired during Routine Analysis, press the green button, and Vision will take a
sample spectrum. The spectrum will be stored in a Product called “***SaveKeyPressed***” and will be
consecutively numbered. The acquisition time will be saved in the Properties box for that sample.