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    Product Name Yoke UV1901PCS spectroPhotoMeter YUEFENG 770S UV-Visible SpectroPhotometer
    Product Price In coming $2591.00
    Details Details
    Model comparison
    Spectral Type UV-Vis UV-Vis
    Optical Path Double-Beam Pseudo-Double-Beam
    Dispersion Grating Grating
    Detection Scanning Scanning
    Light Source Tungsten Deuterium Tungsten Deuterium
    Wavelength 190-1100nm 190-1100nm
    Accuracy ≤0.5nm ≤0.5nm
    Bandwidth ≤2nm
    Detector
    Stray Light ≤0.05%T ≤0.2%T
    Parameter comparison
    Optical inspection system Dual beam of light, CT optical path; 1200 lines/mm laser holographic Diffraction grating Proportional double beam of light, 1200/mm Holographic grating
    Light spectrum bandwidth 0.5Nm, 1nm, 2nm, 3nm, 5nm (adjustable)
    wavelength Range 190~1100nm
    Wavelength accuracy +/- 0.1Nm (D2 656.1nm )， +/- 0.3nm full band
    Wavelength, repeability ≤0.1nm
    Photometric Range 0~200%T、-4~4A 0.0%(T)~200.0%(T)；-0.301~4.000(A)
    Photometric accuracy ±0.002A(0~0.5A)、±0.004A(0.5~1A)、±0.2 %T (0~100 %T)
    Luminosity, sexual repeability ±0.001A(0~0.5A)；±0.002A(0.5~1A)；±0.1%T(0~100%T)
    stray light ≤ 0.02%T ≤ 0.15% (T) (at 220 nm, as NaI) (at 360 nm, as NaNO2)
    Noise level ±0.0004A 100%(T):≤0.2%(T) 0%(T):≤0.1%(T)
    stability ±0.0004A@500nm
    Baseline flatness ±0.0004A ±0.002A(200nm~1090nm)
    data interface 320 * 240 graphic display LCD screen, optional USB2.0 printer and/or U disk data output, USB connection to upper layer software
    Illuminant Tungsten lamp, deuterium lamp Deuterium lamp, tungsten halogen lamp
    dimensions 670*560*260mm
    weight 26kg