Mantis 5000 Especificaciones descargar pdf (Pagina 64)

Figure 49. The beam falling on the reference mounted in the jaw style centre mount.

4. Examine the path of the reference beam inside the integrating sphere. The beam

should strike the reference port without clipping any part of the sample or sample holder.

5. Remove the sample holder from the sphere and replace the sample with a calibrated

diffuse reflectance standard. If a calibrated standard is not available, use an uncalibrated

Spectralon standard. Load the sample holder assembly into the integrating sphere and

install the accessory cover.

6. Collect a Baseline scan

7. Mount the sample into the centre-mount sample holder. For the jaw style device, the

transmitted component from the sample beam must be eliminated so it is not collected by

the sphere. This can be accomplished by backing the sample with a piece of black felt

cloth. Load the sample holder assembly back into the sphere.

8. Click the Setup button and check the parameters. Normally, the setup parameters for

the application should match those used for the baseline scan. If using a previously

defined baseline correction, retrieve the correct baseline.

9. Click the Start button.

10. If the standard reference option was used for the baseline scan, the reflectance

spectra is generated automatically. If the simple or zero baseline correction was selected,

multiply the sample scan data by the spectral reflectance factors for the calibrated

reflectance standard or the typical data in Appendix B. Reflectance standards at

Labsphere are calibrated using 8°/h geometry

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Mantis 5000 Especificaciones Pagina 64