UV Measurement & Process Control

More documents

Recommendations

Info

Understanding your instrument (and its limits)• Treat and handle as an instrument• Maintain on daily basis, calibrate & service as required• Users expect the same accuracy as other instruments-currentradiometer technology ± 10%• Optics• Filter and detector specifications• Spatial response (Cosine Response)• Design-Balance between optical stability (minimal solarization) andrepeatable electronic signal level• Electronics• Temperature sensitivity• Sample rates/Data collection speeds• Improvements in electronics since early instruments• User induced errors and comparisons (real vs. perceived)• Comparison to other productsUse your instrument within design specsPICNIC errors: Problem in chair, not in calibration
Why Calibrate?• Balance the amount of IR, Visible and <strong>UV</strong> the optics and detector “see” withthe output signal from the detector• Compensate for changes in the optics over time• Solarization• Instruments used in harsh production & manufacturing environments• Irradiance levels:• Sunlight: +/- 20 mW/cm 2• Production <strong>UV</strong> levels: 100’s to 1000’s mW/cm 2• Physical damage to instrument• Drop, crush instrument, scratch optics• Optics/instrument coated with ?• Electronics checkup• Physical and/or heat related damage
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 and 12: Electrical Power• Amp MeterWhat s
Page 13 and 14: What should we monitor?• Before:
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: UV Formulation SpecificationsOrigin
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

Create successful ePaper yourself

Delete template?

Save as template?