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SEEcure On-Line UV Monitoring

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Description

Lamp decay, poor condition of the reflector and general contamination will reduce the lamphead’s ability to provide economical curing.  GEW’s SEEcure on-line UV monitoring ensures continued performance by providing a means to determine the onset and degree of deterioration.  Given this information, maintenance can be scheduled-in for a convenient time and spare parts such as UV lamps can be obtained well in advance.

 

How it Works

A small optical device fitted in or around the lamphead senses UV output.  The signal is processed and a proportional readout is displayed on the operator control panel, together with readouts for any other lampheads in the system.  During manufacture the device is calibrated to establish a reference output for a new reflector and lamp and the displayed value is matched to the lamp power percentage.

The SEEcure device
Figure 1. The SEEcure device.
 

The Operator Control Panel

Figure 2 shows a typical SEEcure operator control panel.  The central column shows the lamp power (%) as set by the operator and the right-hand column “UV%” shows the readout from the UV monitor.  In the example, the values for lamp power (%) and UV% closely agree for all but lamp six.  Lampheads one through five are shown to be in good condition whereas lamphead six requires investigation.


Key Benefits

  • Ensures continued curing performance
  • Avoids premature lamp replacement
  • Allows the scheduling of maintenance
  • Allows preplanning of spares requirements
  • Can be used for reducing energy consumption without compromising cure quality.

Key features

  • Continuous monitoring and display of relative UV output
  • Simultaneous readout for all lampheads
  • Small enclosure for installation in tight spaces
  • Various configurations of mountings and sensor allow integration into most presses  

Specifications summary

  • Extruded aluminium enclosure, 80 L x 54 W x 23 H mm
  • Type 12 enclosure rating
  • Operating temperature range 0 to 40oC
  • Silicon Carbide photodiode for best performance in high temperature applications
  • 0-5V output proportional to UV intensity (as standard)
  • Wavelength sensitivity 315 - 395nm (UVA range)
 
Operator Control Panel + UV Monitoring

Figure 2. Operator control panel
with SEEcure on-line UV monitoring

 


Figure 3. SEEcure on-line UV monitoring linearity evaluation for a VCP  38cm lamp

 

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