【摘要】 本文通过对元件进行表面修饰研制了三种类型气敏催化元件。结果表明，Ｃ类催化元件所测气体具有较高的灵敏度和选择性；元件的响应时间为Ｔｒｓ＜３０ｓ，恢复时间Ｔｒｅ＜１ｍｉｎ，变异系数ＣＶ＜５％，标准偏差为ＳＤ＝５．３７％，平均收率为９９．０５％。元件的灵敏度为１５９ｍＶ／１％丁烷，在０．０１％～１．６５％范围内具有良好的线性，可用于石油液化气的检测与报警装置更多还原

【Abstract】 Three kinds of catalytic gas sensors have been prepapared. The response time is about 30 seconds and the resuming time is about 1 minute. It appers that the sort of C senser is more sensitive and selective. It can be used to measure C 4H 10 andLPG quantitatively. The sensor responds linearly between 91.46～16463ppm. It life expectancy has been observed.更多还原