Improvement of humidity dependence in gas sensor based on SnO2

被引：18

作者：

Fukui, K ^{[1
]}

Katsuki, A ^{[1
]}

机构：

[1] New Cosmos Elect, Yodogawa Ku, Osaka 5320036, Japan

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2000年 / 65卷 / 1-3期

关键词：

humidity dependence; gas sensor; SnO2;

D O I：

10.1016/S0925-4005(99)00417-7

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A tin oxide-based gas sensor for detecting CH4 and i-C4H10 in a low gas concentration (200 ppm) was developed on the basis of "Hot Wire Type" gas sensor, which was sintered in a bead (0.55 mm empty set) to cover a platinum wire (0.20 mm empty set) coil. The effect of oxides of Co, Cr, La or Ce on humidity dependence of tin oxide was investigated. The oxides of Co and Cr gave a prominent stability for the sensor output to CH4 and i-C4H10 under the humidity change outdoors through a year. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：316 / 318

页数：3