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    Product Name Yoke U4000 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
    Accuracy ≤0.5nm ≤0.5nm
    Bandwidth ≤2nm ≤2nm
    Detector Silicon Photodiode
    Stray Light ≤0.05%T ≤0.2%T
    Parameter comparison
    Optical inspection system Double beam of light system Proportional double beam of light, 1200/mm Holographic grating
    Light spectrum bandwidth 2nm
    Illuminant Imported tungsten lamp, imported deuterium lamp Deuterium lamp, tungsten halogen lamp
    Wavelength accuracy ≤ +/- 0.1nm (D2 656.1nm ）， +/- 0.3nm full area
    Wavelength, repeability ≤0.1nm
    stray light ≤0.05%T ≤ 0.15% (T) (at 220 nm, as NaI) (at 360 nm, as NaNO2)
    Photometric Range 0-200%T，-0.3-3.0A 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），±0.15%T（0~100%T）
    keyboard Membrane button
    Detector Imported silicon photodiode
    display system 320 * 240-Bit highlight 6 * LCD display
    Data output mode RS-232C serial port, USB connection port
    power supply AC 220V/50Hz or AC110V/60Hz