ILT960UV-RAA4 Portable Compact UV Spectrometer

Part Number: ILT960UV-RAA4 US

ILT960UV-RAA4 Portable UV Spectrometer Features

  • Spectral Range:
    • ILT960UV: 200-500 nm 
  • NIST-Traceable, ISO/IEC 17025:2017 Accredited Calibration Included 
  • Interchangeable input optics include:
    • RAA4 Right angle micro probe (included in ILT950UV-RAA4)
    • RAMP 12 -Rigid 12” fiber with mini right angle optic
    • INS50 -2” integrating sphere with 7 mm port
    • INS125 -5” Integrating sphere with 3 ports (20 and 40 mm dia)
  • Typical spectroradiometer applications include: 
    • UVGI Disinfection validation
    • Characterization of  UV LED’s and Source
    • Characterization of UV Curing Systems 
    • Solar UV measurements
    • UV LED and small source (< 40 mm dia) total spectral flux
    • Radiometry Measurements 
    • Absorbance/Transmittance 

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ILT960UV-RAA4 Response Curve

The ILT960 is a compact, portable, UV spectrometer with increased  broadband UV sensitivity  offering the ability to measure UVC light levels as small as .4 uW/cm2/nm as well as graph the spectrum and light level from 200-500 nm.   The ILT960-RAA includes everything needed to take measurements including spectrometer, rugged carrying case, 1 meter fiber optic light guide, RAA4 right angle cosine correcting input optic, calibration with certificate and an extensive complimentary software software package called SpectrILight III.  (DLL's for SpectrILight III are sold separately) 

Additional input optics are available for both irradiance and total flux including, longer light guides, a rigid 12 inch fiber light guide with a  small right angle adapter (PN RAMP12) for hard to reach or high heat applications, and both 2 and 5 inch integrating spheres.

The new ILT960UV combined with ILT's powerful SpectrILight III software, including a baseline overlay comparison, Irradiance Select, Peak find and more, makes the ILT960UV an extremely versatile device for in the lab or in the field.


Watch our demo video of the ILT960 and SpectriLight III software


Not sure which UVGI system is right for you?  View our side-by-side comparison

ILT960-RAA4  vs ILT2400-UVGI

click for larger image

 SpectrILight III Software

SpectrILight™ III is a LabView™ based software package for Windows that allows you to acquire spectral and color data. Analysis of the data is now calculated instantly

within the same program - no exporting required!


The latest version of SpectrILight™ III has additional calculations for metamerism, and 2 and 10 degree observer. The new Overlay feature allows the user to compare the base reading to current readings. Wavelength range, integration time, scan average and other controls can be easily set through pop up windows, menus and tool bars. Absolute Irradiance and chromaticity are calculated instantly.


SpectrILight™ III is LabView™ based software and can be easily customized for specific OEM applications. For API applications, Multiple DLL’s are available. Please contact us for more information.

spectrilight fluorescent screen


Irradiance Graph


Requires Windows XP Pro or Windows 7 Pro Editions (Pentium II 300 MHz or better), Windows 8 and Windows 10.  Note: Software will not work with Windows limited  "Home" editions.

To learn more about SpectrILight software, please click on the following Technical Information links below: SpectriLight III Spectral Analysis Software Datasheet and SpectriLight III Spectral Analysis Software Manual.

Interested in the ILT960 Spectroradiometer and want to know if it will work for your application? Please tell our applications engineers more about your application - click to fill out our detailed Spectroradiometer Inquiry Form


Model ILT960UV
Detector CMOS Linear Image Sensor
Focal Length (R1-R2) 60/60 mm
Grating 1200g/mm
Blaze 200 nm
Wavelength 180-500 nm
Slit 50 um
Resolution </= .9 nm
Dark Noise 36 (upper limit)
SNR 330
Dynamic Range 3450
Stray Light < 0.2%
Wavelength Accuracy +/- 0.21 nm
Dynamic Dar Correction Yes
Non-Linearity Calibration Yes
Wavelength Calibration Yes
Trigger Compatible Yes
Synchronization Compatible Yes
ADC 16 Bits, 2.5 MHz
Operating Temp 0 - 50 Deg C
Interface USB 2.0 UART
Typical Sensitivity Range >/= .9 uW/cm2 to .9 W/cm2 
Radiometric Accuracy 200 - 250 nm:  +/- 15%*
250 - 450 nm:  +/-10%*
450- 950 nm:  +/- 5%
Calibration NIST Traceable, ISO17025 Accredited Calibration**
Dimensions 35.4 H x 86 W x 110mm L 
Power 300 mA @ 5VDC (supply voltage 4.75 - 5.25)

* Requires Dual Source Calibration