A continuous monitor for hydrogen in gases

Abstract

The construction and use of an instrument for the continuous monitoring of hydrogen in gas streams is described. The principles upon which the instrument is based are the catalytic oxidation of hydrogen to water, and the subsequent determination of the water with an electrolytic hygrometer. Factors relevant to the efficient operation of the instrument for laboratory and plant conditions are discussed. Results indicate a coefficient of variation of the order of ±5 per cent. for the 80 to 1000-v.p.m. hydrogen range.