Individual Particle Characterization Device For Thermal/Cold Spray Processes
The DPV is a revolutionary optical sensing device that provides on-line monitoring of individual particles
characteristics in thermal spray plumes. With only 5 minutes setup, you get:
  • Individual particles characteristics (not only mean values) measured on the fly for up to 4000 particules per second depending on spraying conditions
  • Simultaneous measurements for T, V & D & Flow rate
  • Temperature measurements from 1000 to 4000°C
  • Velocity measurements from 5 to 1200 m/s
  • Diameter measurements from 10 to 300 µm
  • Histograms with full distributions, mean values & standard deviations
  • Auto-centering feature as well as computer controlled sensor motion & plume mapping  Click here to see the DPV Centering Video (en)
  • Possibility to implement feedback strategies based on the results
  • Drastic costs reduction in terms of test coupons and waste pieces

 dpv evolutiondpv evolution screen

 DPV eVOLUTION Main Screenb



  Advantages of the eVOLUTION platform versus the Millennium
  • Brand new software featuring, among other things, a simplified user interface, real-time contour plots, possibility to SAVE & REPLAY a complete experiment including the video frames if your system is equipped with PlumeSpector option
  • Much smaller, more portable industrial enclosure
  • Touch screen user interface
  • And more!
  Although it was initially designed for process understanding, modeling & development, the DPV has evolved and is now used as well as a monitoring tool on the production floor (both in the aeronautic & automotive industries). Fully automated measurement sequences synchronized with the robot movements have been implemented in order to minimize operator intervention.
  dpv evolution contour plots 
                                                                                                              DPV eVOLUTION Contour Plot Screen

Available options:

The optional CPS-2000 Cold Particle Sensor option was developed to allow characterization of particles so cold (or so small) that they do not emit enough infrared energy to be detectable with the standard DPV. The general idea here is to shine light into the measurement volume of the DPV; detection then relies on the light scattered by the particles (instead of the light radiated). Velocity, flux & size of the cold particles can be measured with this system.  Of course, temperature measurement is not possible with this configuration. The CPS-2000 uses a high-power, solid-state laser diode tuned on one of the DPV pyrometer's wavelength. The monochromatic IR light is delivered into the measurement volume through a fiber optic coupled into a carefully designed beam shaper in order to achieve very uniform lighting (precision of the size measurement strongly depends on the beam uniformity). The system can detect cold ceramic particles down to around 10 µm, and metallic ones down to 6µm.
Typical applications of the CPS-2000 are:
  • To evaluate what fraction of the injected material is not heated correctly (correlated with poor DE)
  • To determine location of the cold particles into the spray plume
  • To monitor cold spray, sand or grit blasting processes
It is now possible to integrate the PlumeSpectore capability into your DPV eVOLUTION. Click here to lear more about the PlumeSpector.
Substrate Temperature Pyrometer
It is possible to integrate into your DPV eVOLUTION a substrate temperature pyrometer (measurement range of -15 to 525°C
  To know more about this system or to receive a quotation, please do not hesitate to contact us at: thermalspray.sales@tecnar.com
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