How the Chamber Design Can Affect Gas Sensor Responses

Proceedings

Perrier, Pierre¹  Annanouch, Fatima-Ezahra²  Bouchet, Gilles³  Morati, Nicolas⁴ 

[1] Author to whom correspondence should be addressed.;IM2NP, CNRS, Aix Marseille Univ, Université de Toulon, F-13397 Marseille, France;IUSTI, CNRS, Aix Marseille Univ, 13453 Marseille, France;Presented at the Eurosensors 2018 Conference, Graz, Austria, 9–12 September 2018

关键词: gas sensor;    gas testing chamber;    metal oxides;    tin oxide;    mathematical modeling;    simulation;   

DOI  :  10.3390/proceedings2130820

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

In this paper, we report the significant role played by the testing chamber for measuring the true gas sensor responses. Two different designs were studied and compared. The first one has a cross-shape in which the direction of gas flow is perpendicular to the sensor surface. The second one has a boat-shape in which the gas flow is tangential to the sensor surface. The results demonstrated that contrarily to the cross-shape chamber, the gas concentration is highly homogenous and equal to the set point in the boat-shape chamber. Additionally, the sensor responses are much stable, faster and higher. Besides, all the mathematical modeling and simulation results are in a good agreement with the experimental studies, which allow the validation of the proposed boat-shape chamber model.

【 授权许可】

CC BY