Technology

All our detection systems use a technology mastered by Proengin: Flame Spectrophotometry.
It consists in analysing the light spectrum of a flame in which burns the gas or the particles to be detected.
Atomic elements or chemical liaisons have a specific light spectrum. Phosphorus, Sulphur, Arsenic, H-N=O chemical liaison, Potassium, Sodium, Calcium and many other elements thus can be detected without mistake into any gas, aerosol, dust or particle.
Proengin Detectors use that principle to detect those elements that are present in Chemical Warfare Agents or in Toxic Industrial Materials:

  • All nerve agents such as Sarin, soman, Tabun or Vx contain phosphorus;
  • All Blister agents such as mustard gas and lewisite contain either Arsenic or sulphur.
  • All Blood agents contain arsenic or emit a HNO molecule when burned into an hydrogen flame.

This technology allows to detect an unlimited number of gases as it is not subject to the limitations of a library.

Example of main emission line (or band) from sulfur, phosphorus, sodium and potassium between 350 and 800 nm.

Example of main emission line (or band) from sulfur,
phosphorus, sodium and potassium between 350 and 800 nm.

The flame spectroscopy presents many advantages:

  • The measure is instantaneous: each time toxic molecules are sampled in the flame, it reacts immediately.
  • All elements can be simultaneously detected because they emit different colors.
  • The response time is very fast
  • The “return-to-zero” time is very fast
  • There is no memory effect. Even if you detect a high concentration of toxic, the sensitivity for all detectable elements will be recovered few seconds after.