Table 2-1 DB-20 Specifications
Item Description
Monochromator Equipped with high resolution
concave diffraction grating and Seya-
Namioka monochromator
Wavelength Range 190~1100nm
Spectral Bandwidth 1.5 nm
Stray Light 0.05% or less (220nm NaI, 340nm
NaNO
2
)
Wavelength Accuracy ±0.3nm
Wavelength Reproducibility 0.1nm
Photometric Mode Abs, %T, Conc
Photometric Range
Abs: -3.000~3.000
%T: 0~600%T
Conc: 0.000~9999
Photometry Accuracy
(Measured with NIST 930D Filter)
±0.002Abs (0~0.5Abs)
±0.004Abs (0.5~1.0Abs)
±0.008Abs (1.0~2.0Abs)
±0.3%T
Photometry Reproducibility
(Measured with NIST 930D)
±0.001Abs (0~0.5Abs)
±0.002Abs (0.5~1.0Abs)
±0.004Abs (1.0~2.0Abs)
±0.15%T
Baseline Flatness ±0.002Abs ( 200 to 950 nm)
Baseline Stability 0.0003Abs/h (at 500 nm)
2 hours after power up
Noise Level 0.0003Abs/300s (500nm)
Wavelength Scan Speed 10, 100, 200, 400,
800,1200,2400,3600nm/min
Light Sources WI lamp, D2 lamp
Light Source Switchover Automatic changeover, 325-370nm
selectable
Detector Silicon photodiode
Display Liquid Crystal Display (LCD)
Printer Interface PCL/3,ESC/P or DPU
Expanded Storage USB Disk
Communication Function RS-232C
Dimensions 500(W) ×705 (D) ×225 (H)
Weight Approx. 29kg
Power Source 100, 115, 220, 230, 240V 50/60Hz
Power Consumption 200VA
2-9
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