BAS SEC2000 Spectra System, Руководство по эксплуатации

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SEC2000 Operating Manual
SEC2000 Spectra System
www.als-japan.com
31
5. Measurement
5-1. Calibration
All spectrometers are delivered to the user after an initial calibration but some can drift
slightly over a period of time and depending on the environment (If the mirror and
diffraction grating are not aligned, please contact us.).
It can be confirmed by the following way whether wavelength calibration is need. Open
the software and turn on the UV lamp. Confirm the following peaks in scope mode. As
shown in Fig. 5-1-1, sharp peaks at 656 nm labeled D
α
, are the feature peaks of the
deuterium arc lamp. The wavelength calibration is required when the feature peaks is
gap.
<Fig. 5-1-1> Emission spectrum of the ultraviolet deuterium arc lamp showing characteristic
hydrogen Balmer lines.
5-2. Dark and Reference Measurements
When Dark and Reference are measured, continue with the experiment applying the
same Integration Time value. To block the light towards the detector SEC2000 , close the
shutter of the light source.
①
The power supply is switched on and turned ON the UV lamp and halogen lamp.
Wait for 20 to 30 minutes until UV lamp is stabilized.
②
Put the reference sample into the cuvette holder, and open the light source shutter