FIELD: analytical technics. SUBSTANCE: application area: space, mining, and other industries, in particular, cryogenic engineering. Analyzer contains casing, gas-inlet and gas-outlet canals, and semiconductor sensor based on In2O3 modified with CuO additives. Sensor is placed in individual chamber separated from analysis chamber by polymer diffusion membrane selectively passing hydrogen and being blown with gas containing no hydrogen. EFFECT: increased selectivity with regard to hydrogen. 3 dwg
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