UV Measurement & Process Control

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Where the electrical power goes?Only a small portion of the applied power generates UV
What should we monitor?• Before: Readings on a two lamp system• Energy Density: 953 mJ/cm 2 (UVA EIT 320-390)390)• Irradiance: 313 mW/cm 2 (UVA EIT 320-390)390)• After: Readings on the same system• Energy Density: 1203 mJ/cm 2 (UVA EIT 320-390)390) + 26%• Irradiance: 449 mW/cm 2 (UVA EIT 320-390)390) + 43%• Only one thing done• Reflectors were cleanedOne little thing can have a big impact in the amount of UVreaching the cure surface
Page 3 and 4: Are we speaking the same (UV) langu
Page 5 and 6: Why do we measure?• Repeatability
Page 7 and 8: Who is measuring UV and what is the
Page 9 and 10: Where the UV goes-relative penetrat
Page 11: Electrical Power• Amp MeterWhat s
Page 15 and 16: Impact of System ChangesWhat should
Page 17 and 18: What should we monitor? UV Spectral
Page 19 and 20: With 600 hours of run time would yo
Page 21 and 22: What should we monitor?Do you have
Page 23 and 24: Radiant Energy Density as a Functio
Page 25 and 26: How do we measure?Absolute Instrume
Page 27 and 28: UV Bandwidths60504030CBAV201000 100
Page 29 and 30: UV Measurement and Process Control
Page 31 and 32: Process or Cure WindowNormal Operat
Page 33 and 34: Sample Job LogDateLine Speed DwellT
Page 35 and 36: UV Formulation SpecificationsOrigin
Page 37 and 38: Why Calibrate?• Balance the amoun
Page 39 and 40: Instrument Optics: Spatial Response
Page 41 and 42: Instrument ElectronicsThreshold•
Page 43 and 44: Instrument with Low Sampling Rate &
Page 45 and 46: What ‘dialect’ of UV Watts are

UV Measurement & Process Control

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