Perkin-Elmer Lambda 20, Руководство по установке и обслуживанию

Страница: 85 / 108

Lambda 20, Lambda 40 UV/Vis Spectrometers
84
Optics
Beam center height 15 mm above cell holder bottom
Beam cross-section 1 mm slit ca. 0.6 mm x 9 mm (width x height)
2 mm slit ca. 1 mm x 9 mm (width x height), at
focal point of sample and reference
beam
in sample compartment
Optical pathlength in
sample compartment 121 mm
Grating (Monochromator) Holographic concave grating with 1053 lines/mm
in the center
Radiation sources Prealigned deuterium and halogen lamps
Detector Photodiodes
(One for the sample beam and one for the
reference beam)
Abscissa
Wavelength range 190 n to 1100 nm;
0 nm for alignment purposes
Wavelength accuracy ±0.3 nm
Wavelength reproducibility ±0.1 nm
Spectral bandwidth 1 nm or 2 nm (fixed slit)
Lamp change Automatically at 326 nm
(selectable over the whole wavelength
range, see Super User Factory
Configuration)
Scan speeds 7.5, 15, 30 , 60, 120, 240, 480, 960,
1920 and 2880 nm/min
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com