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Home Sensors Colorimetric Detector of Gas Mixtures

Colorimetric Detector of Gas Mixtures


Chemical sensor optoelectronic system for the analysis of composition of gas mixtures on the basis of interference transducer with registration of R,G,B – components of light, reflected from the surface of the thin adsorption layer of the color-painted sensitive material and CCD camera for registration of constituents of light.

Operation of colorimetric optical instrument is based on the comparative analysis of color characteristics of signals, obtained as a result of interference of white light on the thin layer of the painted sensitive material both in absence of the analyzed gas and after its action. Recording of color parameters of sensitive layer under gas influence is provided by values of R,G,B - components of the reflected light. The library of such characteristics (chemical images) with using of statistical methods of recognition allows to identify a presence of that or other matter in the analyzed probe.

Basic technical characteristics:

  • field of image 1 mkm –––––––––––––––––––––– 2 sm;
  • spatial separate ability ––––––––––––––––––––– 0.5 mkm;
  • maximum number of registered colors –––––––– 106;
  • number of optical channels ––––––––––––––––– 1 – 20;
  • light sensitivity ––––––––––––––––––––––––––– 1–50 Lux;
  • template size –––––––––––––––––––––––––––– 20 x 20 mm;
  • type / temperature of light source ––––––––––– LED/6500 К;
  • frame capture ––––––––––––––––––––––––––– 15–30 fps;
  • threshold sensitivity of gas detection ––––––––– 10-300 ppm;
  • size –––––––––––––––––––––––––––––––––––– 250 x 145 x 200 mm with the printing inks.

Innovative Aspect and Main Advantages

Estimation of novelty: similar developments are not present in Ukraine; original sensitive layers and methods of processing of images are used in a device. Intellectual property: Khoruzhenko V.Yu., Shirshov Yu.M., Kostyukevych K.V., Samoylova I.A., Christosenko R.V. Patent of Ukraine “Colorimetric interference detector substances in a probe”, № 56652 А, publ. 15.05.2003.

Areas of Application

The device is intended for detection and analysis of gas mixtures in analyzed air probes and in an environment and it can be used in technological processes on a manufactory, for diagnostics of diseases in medicine, in pharmacology and perfume production, for the ecological monitoring.

Stage of Development

Pilot samples.

Contact Details

V. Lashkaryov Institute of Semiconductors Physics of the National Academy of Sciences of Ukraine
Contact person: Alexander L. Kukla
Address: 41, Prospect Nauki, 03028, Kiev, Ukraine
Tel./Fax: (+38 044) 525 2332
E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

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