High Performance CO2 Measurement Based on Pressure Modulation

被引：10
|
作者：
Wang, Xu [1 ,2 ]
Rodjegard, Henrik [1 ]
Oelmann, Bengt [2 ]
Martin, Hans [1 ]
Larsson, Bo [1 ]
机构：
[1] SenseAir AB, Stn Gatan 12, S-82060 Delsbo, Sweden
[2] Mid Sweden Univ, Sundsvall, Sweden
来源：
EUROSENSORS XXIV CONFERENCE | 2010年 / 5卷
关键词：
Carbon Dioxide; Gas Sensor; Pressure Modulation; NDIR;
D O I：
10.1016/j.proeng.2010.09.329
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Herein pressure modulation is proposed as a method to increase the resolution as well as to eliminate long term drift of NDIR gas sensors. Measurements are presented that verifies the theoretical predictions of possibility to drift compensation and resolution improvement. The resolution is increased 8.6 times when the pressure is changed from atmospheric to 900 kPa. The method can be applied to existing sensors for both resolution improvement and drift compensation. (C) 2009 Elsevier Ltd.
引用
收藏
页码：1208 / 1211
页数：4
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