| 摘要 |
PURPOSE:To impart sensitivity to alcohol different from the sensitivity to the other combustible gas, by using a composite oxide of titanium and niobium and ruthenium oxide for an essential component of a gas sensitive element. CONSTITUTION:A composite oxide of titanium and niobium and ruthenium oxide are used for an essential component of a gas sensitive element. Since the electric resistance value of such gas sensitive element changes largely in accordance with 0-3,000ppm conc. of gaseous alcohol, the gaseous alcohol is detected easily by measuring the electric resistance value. The element is hardly sensible with combustible gases such as methane, ethane, propane, H2 and CO except alcohol; therefore, it has much better selectivity to alcohol. More particularly, the element ranging 0.5<=Nb/Ti<=4 has remarkable sensitivity to ethanol. |
