利用六西格玛(six sigma)统计工具对电化学硫化氢(H2S)气体传感器的气体敏感特性进行了研究, 并运用Minitab 软件对测试数据进行了系统分析. 结果显示, 所测电化学气体传感器对H2S气体响应良好, 灵敏度平均值为0.82 μA/10−6H2S. 在H2S 传感器的量程范围(0∽100×10−6)内, 传感器的响应输出值与H2S 气体体积分数呈现良好的线性关系, 相关指数RSq=99.9%; 传感器对气体的响应速度较快, 响应时间T90 < 20 s. 同时讨论了温度变化对H2S 传感器灵敏度和响应输出值的影响.
The sensitive characteristics of electrochemical H2S sensor are studied by applying six sigma statistical tools. The Minitab software is used to analyze the experimental data. The results show that the gas sensor has a quick response to H2S gas, the average sensitivity is 0.82 μA/10−6H2S, the gas sensor has a good linear relationship with concentration of H2S in the measurement range of the sensor, the correlation index RSq = 99.9%, and the response time T90 < 20 s. The influences of temperature on sensitivity and on the average response value of H2S sensor are also discussed.
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