[Applicability of semi-conductor zinc oxide gas sensors to detection of low ozone concentrations in pressurized modules].
Gas analyzers employ a variety of physical-chemical processes including photocalorimetry, electrochemistry, thermal catalysis and others. Most of the analyzers are designed with certain drawbacks like insufficient serviceability of electrochemical or catalytic thermal sensor and, consequently, the requirement of periodic replacement and calibration, the necessity of periodic resupply of expendables (photocalorimetric) etc. utilization of these systems in pressurized modules is complicated because of the necessity of regular resupply and coordination of experiment duration with gas-analyzer maintenance operations. The problem can be resolved by introduction of semi-conductor gas sensors functioning on the principle of reactivity of metal-oxide conduction to a measuring substance. A zinc oxide semi-conductor sensor was tested for ozone with calculation of the dependence of wanted signal on substance concentration. The tests were performed in steady and pulsed mode of sensor operation.
Eremeev
S I
SI
Krychenkov
D A
DA
D001274:Atmospheric Pressure; D015374:Biosensing Techniques; D004784:Environmental Monitoring; D006801:Humans; D008567:Membranes, Artificial; D010126:Ozone / Q000032:analysis*; D012666:Semiconductors; D013026:Space Flight; D014871:Water Microbiology; D014874:Water Pollutants, Chemical; D014881:Water Supply; D015034:Zinc Oxide
D008567:Membranes, Artificial; D014874:Water Pollutants, Chemical; D010126:Ozone; D015034:Zinc Oxide