Spectro 320 Spectrometer (Discontinued)

Born from the innovative Fast-Scan Technology, the Spectro 320 combines quick and accurate measurements with high dynamic range. A feature rich system, the Spectro 320 is extremely flexible and infinitely applicable spectrometer. A fully equipped Spectro 320 comes with 3 detectors and houses 3 gratings, covering an enormous spectral range from 190 to 5000nm.

This instrument is available as a single or double monochromator (Spectro 320D). The double monochromator configuration makes the best use of the Fast-Scan technology guaranteeing short acquisition times in association with high wavelength accuracy. It works because the diffractions gratings of both monochromator stages are mounted on the same rotating axis eliminating synchronization errors.


  • Quick measurements, increased signal dynamic and wavelength accuracy with Fast-Scan technology
  • Filter wheels for sorting orders and integrated optical density
  • As options, this unit can accommodate cooled silicon and extended InGaAs detectors operating as high as 2,150 nm as well as a cooled photomultiplier
  • An optical port containing both detector input ports and an optical output is optional
  • Wavelength steps and spectral resolution (bandpass) can be custom-programmed
  • Interfaces include IEEE-488 and RS-232
  • Programming and remote control are easy with the standard SCPI protocol
  • Each scan can return a spectral range up to 190-5,000 nm


  • Truly universal spectrometer for a multitude of laboratory applications
  • High-end spectroradiometer for the UV-VIS-IR range (e.g. UV-B, solar radiation)
  • High resolution spectral analysis, e.g. of laser diodes and spectral emission lines
  • NVIS measurements according to MIL-L-85762A or MIL-STD-3009

Ordering Information

Single Monochromator Double Monochromator Model Wavelength Range
1 grating and 1 detector
SP320-120 SP320-160 VIS 350 – 1100 nm
SP320-121 SP320-161 UV 190 – 1050 nm
SP320-122 SP320-162 IR1 800 – 1700 nm
2 gratings and 2 detectors
SP320-123 SP320-163 VIS-IR1 350 -1700 nm
SP320-124 SP320-164 UV-IR1 190 -1700 nm
SP320-125 SP320-165 VIS-IR2 350 – 3200 nm
SP320-126 SP320-166 UV-IR2 190 -3200 nm
3 gratings and 3 detectors
SP320-128 VIS-IR1-IR3 350 – 5000 nm
SP320-129 UV-IR1-IR3 190 – 5000 nm


Spectro 320 Scanning Spectrometer
Wavelength range 190 – 5000 nm (with 3 gratings and 3 detectors)
Spectral resolution 0.2 nm (0.1 *HR) – 10 nm; programmable slit wheel
Datapoint interval 0.05 nm (0.01 nm *HR)
Wavelength accuracy +/- 0.1 nm; (+/- 0.03 nm *HR)
Signal sensitivity Si detector: 5*10-11 W/nm; PMT: 5*10-15 W/nm
Scan times 12 – 500 msec / nm
Stray light Spectro 320: 10-5 ; Spectro 320D: 10-9
*HR: high resolution encoder (optional)

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