9
Note: Values given for wavelength accuracy, wavelength repeatability, photometric
accuracy, photometric repeatability, baseline flatness, and RMS noise are
those obtained more than one hour after the light source was turned on.
2.4 V-670 UV/VIS/NIR Spectrophotometer Specifications
Optical system Single monochromator
UV/VIS region: 1200 lines/mm plane grating
NIR region: 300 lines/mm plane grating
Czerny-Turner mount
Double beam type
Light source Deuterium lamp: 190 to 350 nm
Halogen lamp: 330 to 2700 nm
Light source exchange
wavelength
Any wavelength between 330 and 350 nm can be selected.
Detector Photomultiplier tube
PbS photoconductive cell
Detector exchange
wavelength
Any wavelength between 750 and 900 nm can be selected.
The diffraction grating is set to the same wavelength as the
detector exchange wavelength.
Wavelength range 190 to 2700 nm
Using the optional wavelength extension accessory,
wavelength of up to 3200 nm can be measured.
Wavelength accuracy
±0.3 nm (at a spectral bandwidth of 0.5 nm, UV/VIS region,
when the room temperature is stabilized.)
±1.5 nm (at a spectral bandwidth of 2.0 nm, NIR region,
when the room temperature is stabilized.)
Wavelength repeatability
±0.05 nm (at a spectral bandwidth of 0.5 nm, UV/VIS
region)
±0.2 nm (at a spectral bandwidth of 2.0 nm, NIR region)
Slew speed 12000 nm/min (UV/VIS region)
48000 nm/min (NIR region)
Spectral bandwidth 0.1, 0.2, 0.5, 1, 2, 5, 10 nm (UV/VIS region)
L2, L5, L10 nm (low stray-light mode, UV/VIS region)
M1, M2 nm (micro-cell mode)
0.4, 0.8, 1, 2, 4, 8, 20, 40 nm (NIR region)
L8, L20, L40 nm (low stray-light mode, NIR region)
M4, M8 nm (micro-cell mode, NIR region)
Photometric range 0 to 10000 %T
-2 to 4 Abs (UV/VIS region)
-2 to 3 Abs (NIR region)
Photometric accuracy
±0.002 Abs (0 to 0.5 Abs)
±0.003 Abs (0.5 to 1 Abs)
±0.3 %T
(Tested with NIST SRM 930D)
Photometric repeatability
±0.001 Abs (0 to 0.5 Abs)
±0.001 Abs (0.5 to 1 Abs)
Stray light 1 % (198 nm KCL 12g/L aqueous solution)
0.005 % (220 nm NaI 10g/L aqueous solution)
0.005 % (340 nm NaNO
2
50g/L aqueous solution)
0.005 % (370 nm NaNO
2
50g/L aqueous solution)
(spectral band width: L2 nm, 10 mm cell used）
0.04% (1690 nm H
2
O 10 mm cell used)
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