Particle counter

• Efficient construction:
  • No cleaning
  • No re-calibration
  • No consumables
  • No soot build-up
  • No flammable operating liquid
  • Insensitive to vibrations
  • Independent of position during measurement
  • No dilution
  • No need of compressed air
• Easy integration:
  • The particle counter can integrate into all COSBER emission testers
  • It can be used in addition to the gas analyzer and opacimeter functions, or as a stand-alone unit.
• Simplyfied maintenance:
  • The measurement is done at idle in less than 30 seconds.
  • No need for free acceleration, which is polluting, noisy and stressful for the engines or the operators.
• Economic and sustainable:
  • The particle counter uses ExtDC measuring principle without soot clogging. The straight-through design keeps the sensor clean for extended operating time.

ADVANTAGE OF EXTENDED DIFFUSION CHARGING

• Reliability and repeatability
• ExTDC consists in electrically charging the particles by the diffusion of a high density of ions (positive) created in an ionization chamber by corona effect.
• The concentration of charged particles is measured when leaving the sensor, the measurement corresponding to a leakage current per unit of time.
• This leakage current is proportional to the number of particles – and their specific surface – leaving the sensor per second, it allows to easily find the concentration in number and even in mass of particles.

PATENTED SOOT-FREE SOLUTION

• The smoke particles are sucked in by the Venturi effect thanks to a clean air flow and are electrostatically charged (15 KV) at the sensor inlet. No risk of sooting the filter and the pump.