UV Integrator Measure UV Energy of LED and High Pressure Mercury Lamp

From:Linshang Time:2019/10/26 14:10:00 Browse:296

UV integrator (UV radiometer) is an advanced UV instrument developed for measuring UV energy and UV radiation intensity. When purchasing UV integrators, customers often ask, "Why do we need to use different UV integrators for high pressure mercury lamps and LED light sources?  If we have two kinds of lamps, do we need to buy two kinds of UV integrators? How do I choose the right UV radiometer? Now, let's find out the answer of the questions.

UV pucks
UV pucks

1. How do I choose the right UV radiometer?

First, the spectrum of the high pressure mercury lamp and the LED light source is different. The curing wavelength of high pressure mercury lamp is mainly 365nm. While the curing wavelength of  LED light source can be 365nm, 375nm, 385nm, 395nm, 405nm. Linshang Technology has invented dedicated UV integrators for different light sources. The spectral response range of the Linshang UV integrator for high pressure mercury lamp is 315nm-400nm. The spectral response range of the UV LED integrator is 340nm-420nm. 

Spectrum of high pressure mercury lamp and UV integrator for 365nm

spectrum response of UV integrator
spectral response of high pressure mercury lamp

Spectrum of LED light sources and UV LED integrator

spectral response of UV LED integrator
spectral response of 365nm LED

Therefore, we need to select the instrument that matches the spectrum of the source when measuring. When the spectrum of the UV curing light source is inconsistent with the response spectrum of the instrument, the measured ultraviolet energy will be inaccurate.

Most of the UV integrators on the market are designed for high pressure mercury lamps and are only suitable for testing energy and intensity values at 365 nm in high pressure mercury lamps. However, for the LED light source, there are not only 365 nm, but also various wavelengths such as 375 nm, 385 nm, 395 nm and 405 nm. Therefore, for the LED light source, it is necessary to use a dedicated UV LED integrator.

2. What will happen if improper UV integrators are used?

Of course, for some customers they don't want to buy two UV integrators. Then, using a special instrument for measuring LED to measure high pressure mercury lamps. The test data is stable but the data will be too large and cannot pass the inspection of the Chinese metrology institute. However, there is no problem in controlling the production process. Using a special instrument for high pressure mercury lamps to measure LED lights, the data will be too small.

Therefore, users can determine whether they need to purchase two UV integrators according to their actual situation. The Linshang integrated UV integrator mainly has six models: LS120,LS128,LS130,LS131,LS132 and LS133. 

3. Best-selling UV LED integrators

  • UV energy measurement of LED light sources: LS128, LS131and LS133. 

  • Spectral response: 340nm-420nm, calibrated at 395nm.

  • Irradiance measuring range is 0 - 40000 mW/cm².

  • LS128 UV LED integrator can test temperature.

4. Best-selling UV intergrators for high pressure mercury lamp

  • UV energy measurement of high pressure mercury lamps: LS120, LS130and LS132

  • The spectral response range of UV integrators is 315nm-400nm, peak wavelength=365nm

  • Irradiance measuring range is 0 - 2000 mW/cm².

  • LS120 UV integrator can test temperature.

If you want to get more details about how to select a suitable UV integrator, please read"UV Energy Meter Selection and FAQ"  

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