PerkinElmer Lambda 650, Руководство по оборудованию

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28 . System Description
Minimum Performance Specifications
Specification Lambda 950 Lambda 850 Lambda 650
Principle Double beam, double
monochromator, ratio recording
UV/Vis/NIR spectrophotometer
with microcomputer
electronics, controlled by DELL
PC or compatible personal
computer.
Double beam, double
monochromator, ratio
recording UV/Vis
spectrophotometer with
microcomputer electronics,
controlled by DELL PC or
compatible personal computer.
Double beam, double
monochromator, ratio
recording UV/Vis
spectrophotometer with
microcomputer electronics,
controlled by DELL PC or
compatible personal
computer.
Optical system All reflecting optical system
(SiO
2
coated) with holographic
grating monochromator with
1440 Lines/mm UV/Vis blazed
at 240 nm and 360 Lines/mm
NIR blazed at 1100 nm, Littrow
mounting, sample thickness
compensated detector.
All reflecting optical system
(SiO
2
coated) with holographic
grating monochromator with
1440 Lines/mm UV/Vis blazed
at 240 nm, Littrow mounting,
sample thickness compensated
detector optics.
All reflecting optical system
(SiO2 coated) with
holographic grating
monochromator with
1440 Lines/mm UV/Vis
blazed at 240 nm, Littrow
mounting, sample thickness
compensated detector
optics.
Beam Splitting
System Chopper (46+ Hz, Cycle:
Dark/Sample/Dark/ Reference,
Chopper Segment Signal
Correction CSSC). Chopper (46+ Hz, Cycle:
Dark/Sample/Dark/ Reference,
Chopper Segment Signal
Correction CSSC). Chopper (46+ Hz, Cycle:
Dark/Sample/Dark/
Reference, Chopper
Segment Signal Correction
CSSC).
Detector Photomultiplier R6872 for high
energy in the whole UV/Vis
wavelength range.
Peltier cooled PbS detector for
NIR.
Photomultiplier R6872 for high
energy in the whole UV/Vis
wavelength range. R955 Photomultiplier, giving
high energy throughout the
whole UV/Vis range.
Source Pre-aligned tungsten-halogen
and deuterium.
Pre-aligned tungsten-halogen
and deuterium Pre-aligned tungsten-halogen
and deuterium.
Wavelength Range
(N
2
purge required
below 185 nm)
175 nm–3300 nm 175 nm–900 nm 190 nm– 900 nm
UV/Vis Resolution ≤ 0.05 nm ≤ 0.05 nm ≤ 0.17 nm
NIR Resolution ≤ 0.20 nm N/A N/A