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DSH-721S Visible Spectrophotometer

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Technical Data Sheet

 I.Features

 1. Retain the  all performance and functionality of 721 model instrument.

 2. Wavelength range 360nm ~ 1000nm, used widely.

 3. With microcontroller inside, high degree of automation, with automatic adjustment 0% T, auto 100% T T-A conversion function,

  much convenient than the original 721 model.

 4. Four 0.8 -inch high brightness LED digital display,Readout resolution increase 10 times than traditional type 721 instrument .

 5. Four measurement mode: transmittance (T), the absorbance (A), shade direct reading (C) and the coefficient of determination (F),

 fully meet the testing requirements.

 6. Advanced optical system design, Adopts the high quality of C - T type for grating monochromator

  spectral devices, the resolution of the instrument, the metering precision and stray light indicators are quite optimization.

 7. Using special precision preset lamp and lamp holder, users don't need to adjust the light path again when light is replaced ,

  it is convenient and simple.

 8. Sample chamber using the special engineering plastics with resistance function to  solvent ,  strong acid and alkali,

 corrosion resistant, with the movable disk and container of liquids to meet some users' need.

 9. Could use use 10-50mm cuvette.

 10. Retardant insulation plastic shell, small, light and beautiful appearance.

 II. Main parameters

 1.Optical System: C-T-type monochromator (diffraction grating)

 2.Wavelength range: 360nm ~ 1000nm

 3 Wavelength maximum permissible error: ± 3.0nm

 4. Wavelength repeatability: ≤ 1.5nm

 5. Transmittance maximum permissible error: ± 1.0% (T) (0 ~ 100% tT)

 6. Transmittance repeatability: ≤ 0.3% (0 ~ 100% tT) (T)

 7. Photometric range: T: 0.0 ~ 199.9% (T) A: -0.300 ~ 2.999 (A) C: 0 ~ 9999 (C) F :1-9999 (F)

 8. Spectral bandwidth: 6nm

 9. Stray light: ≤ 1.0% (T) (at 360nm, determine in NaNO2)

 10. Stability: dark current drift: ≤ 0.3% (T) / 3min; light current drift: ≤ 1.0% (T) / 3min

 11. Power supply: AC90 ~ 250V 50/60 Hz

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