Instrument Performance Validation . 101
Validating Instrument Calibration
In order to validate instrument calibration, tests must be performed under the same
measurement conditions as those used to calibrate the Traceable Reference Material
(TRM) at the factory.
We also recommend that before starting the calibration, you make sure that the
instrument is optimally aligned. Refer to the
Aligning the Instrument
topic in the
Spectrum on-screen help.
NOTE: The NIR IPV Certificate Printing Utility validates the basic instrument, and cannot
be used with an accessory. For information on how to validate accessories and
how to perform %T and noise tests, see the
Validation
section of the Spectrum
on-screen help.
Collecting the Reference Spectra
NOTE: For information on collecting spectra, see the Spectrum on-screen help.
1. Set up the instrument with the settings shown below:
Resolution 4 cm
-1
Apodization Strong
Detector DTGS
Refer to
Controlling the Instrument
on page 55.
2. Collect a background spectrum of the empty sample compartment, using 16 scans.
3. Put the TRM in the sample slide in the sample compartment.
4. Collect a sample spectrum of the TRM, using 16 scans.
5. Save the spectrum on a disk as trmpic.sp.
You may use another name for the spectrum.
6. Replace the TRM in its plastic box and store it in a safe place.
7. Move the internal polystyrene APV filter into the beam path.
8. Select Instrument from the Setup menu in Spectrum.
9. Select the Beam tab and then click on the Filterwheel.
10. Select polystyrene and click OK.
11. Collect a ratio spectrum of the polystyrene, using 16 scans.
12. Save the spectrum as ipvpic.sp, on the same disk.
You may use another name for the spectrum.
To Next Page
Loading...
Need help?
General
