Optical oxygen sensor for safe operation  in hazardous areas

Anna Swiderska-Sroda 1Witold Łojkowski 1,2

1. Polish Academy of Sciences, Institute of High Pressure Physics (UNIPRESS), Sokolowska 29/37, Warszawa 01-142, Poland
2. Bialystok University of Technology, Faculty of Management, Kleosin, S. Tarasiuka Street 2, Białystok 16-001, Poland


Optical oxygen sensor based on luminescence properties of ZrO2:Eu nanoparticles  was invented in Laboratory of Nanostructures of  IHPP. Nanopowder with particle size around 10 nm, synthesized in Laboratory,  was compressed into thin pallet and irradiated with ultraviolet (250 nm) or blue (405 nm) LED. Experiments were done in different gas atmospheres. We registered that intensity of Europium luminescence spectra depended on the oxygen partial pressure in sample environment: increased when O2 content decreased. The phenomenon was reversible and repeatable and gave a rise to the work on the new-generation oxygen sensor. Moreover, in our prototype device all electrical elements were eliminated from measurement area: low energy excitation light as well as luminescence signal are transmitted by optical fiber. Such construction make it possible to build an intrinsically safe and explosion-proof industrial sensor for work in hazardous environment,  with flammable gases or dust, found in e.g. petrochemical refineries or mines. The future commercial version of the oxygen nano-sensor, built on the basis of the present laboratory model, will meet the requirements of the Directive ATEX. 


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Presentation: Oral at Nano and Advanced Materials Workshop and Fair, by Anna Swiderska-Sroda
See On-line Journal of Nano and Advanced Materials Workshop and Fair

Submitted: 2014-10-05 00:23
Revised:   2014-10-05 19:41