EIT LED cure testers (USA) l365, l385, l395, l405

EIT (USA) has launched a UV LED irradiance meter, designed specifically to measure the UV irradiance of UV LEDs. The range currently includes four single-channel models—the L365, L385, L395 and L405—as well as the LED CUER four-channel version, which comprises four channels in a single unit.

Select the appropriate instrument based on the UV LED wavelength range you need to measure. Please contact our customer service team directly to obtain the relevant detailed specifications.

EIT’s LEDCure™ radiometers provide a patented Total Measured Optic Response. Every component in the instrument’s “optics stack” is included in the overall instrument response, not just the optical filter. The Total Measured Optic Response ensures consistent, repeatable and accurate readings from run to run, unit to unit and source to source.

LEDCure™ Features:

• An easy-to-use format that displays irradiance (W/cm²) and energy density (J/cm²) values, as well as the irradiance profile
• The “Standard” version shows all data on the display
  • The display can be set to Graph or Reference Mode
• The “Profiler” version displays data on the screen and downloads the irradiance profile (watts per square centimetre as a function of time) to a computer for further analysis
  • Profiler enables easy comparison of different LEDs, power levels, height above the substrate and changes in exposure time and line speed
• High dynamic range (40 W/cm²), user-replaceable battery
• Available in different LED-specific response bands (L-band)
  • The L365 has a spectral response range of 340–392 nm
  • The L385 has a spectral response range of 360–412 nm
  • The L395 has a spectral response range of 370–422 nm
  • The L405 has a spectral response range of 380–432 nm
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Technical Papers

• Update on the Status of UV LED Measurements, Jim Raymont, 19 September 2016
• Recent Advances in the Measurement of UV LED Arrays, Joe T. May, Jim Raymont, Mark L. Lawrence
• Advances in the Measurement of UV LED Arrays, Joe May, Jim Raymont, Mark Lawrence, 8 May 2018
• Measuring the Performance of UV LED Light Sources (“Sink or Swim”), Jim Raymont, 5 June 2018
• A New Approach to UV LED Measurement for Printers: Total Measured Optical Response
• LED L-band Discussion
• Discussion and Sharing on New UV LED Products
• RadTech 2016 Measurement Presentation

EIT’s first UV measurement product was developed and launched in 1984.

Today, EIT’s UV measurement solutions include instruments and sensors for UV LED and UV broadband (arc, microwave, spot) sources.

EIT instruments are used in industrial UV curing applications, including the medical, printing, woodworking, aerospace, automotive, fibre-optic, converting and electronics sectors.

Why use an EIT measurement instrument?

• EIT designs and manufactures high-quality, robust and highly accurate industrial UV measurement instruments in-house
• We offer a wide range of UV LED and UV broadband (arc, microwave, spot) light sources
• EIT instruments facilitate communication between end users, formulators, UV source suppliers and equipment integrators
• EIT has an extensive global distribution network that provides prompt technical support and sales services
• Service is available from EIT or through one of our EIT Authorised Service Centres
• All EIT-calibrated instruments are NIST-traceable
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• UV energy for industrial applications has historically been generated by mercury or mercury-additive-based lamps using arc or microwave technology. UV generated by mercury sources is “broadband”, with output spanning the ultraviolet, visible and infrared spectra. UV LED sources generate UV within a relatively narrow band. The power levels, range of spectral options available, LED features and the form factor of the equipment have enabled LEDs to be used in new UV applications and, in some cases, to replace broadband UV technology.

  EIT has developed a range of LED UV measurement instruments specifically designed and engineered with an L-band response to measure industrial UV LEDs accurately, reliably and with repeatability. EIT LED radiometers are NIST-traceable and are available with different LED-specific responses or L-bands.

  The Importance of Using an EIT L-Band to Measure UV LEDs

  • Source-to-Source
  • Run-to-run
  • EIT instrument-to-instrument
  • The L-Bands (L-365, L-385, L-395, L-405) have been designed specifically for measuring UV LEDs.
  • Each L-band response is designed to accurately measure the variation in the centre wavelength (+/- 5 nm) of an LED.
  • LEDCure L-Band instruments feature a patented “Total Measured Optic Response”.
  • ALL Optical components in the instrument stack are included in the instrument response. This results in repeatable and accurate absolute readings:
  • EIT LEDCure instruments have a dynamic range that supports UV LEDs
  • EIT provides responsive, ongoing technical support. You can contact EIT staff by telephone or email (uv@eit.com) and receive prompt support and assistance.