Title :
Investigation of the effect of inlet radius on the response time of a transmission type ozone sensor
Author :
David, Michael ; Marcus, Tay Ching En ; Yaacob, Maslina ; Hussin, Nabihah ; Salim, Mohd Rashidi ; Ibrahim, Mohd Haniff ; Idrus, Sevia Mahdaliza ; Azmi, Asrul Izam ; Ngajikin, Nor Hafizah
Author_Institution :
Lightwave Commun. Res. Group, Univ. Teknol. Malaysia, Skudai, Malaysia
Abstract :
The effect of inlet radius of a transmission type optical gas cell on its response time is reported. Six gas cells of varying lengths, and internal radius of 0.32cm were considered at first and then other internal diameters were also investigated afterwards. The effect of inlet radius is easily discernible at all velocities considered; however it is more pronounced at lower flow rates. At a velocity of 16.79cm/s of ozone gas, and for a target sensing time of ≤ 0.5 seconds; we observed that the inlet radius requirements for gas cells of varying lengths and varying internal diameters is not the same for a specific target sensing speed. The length and the internal radius of a gas cell are proportional to its inlet radius.
Keywords :
atmospheric composition; atmospheric measuring apparatus; gas sensors; ozone; O3; inlet radius; internal diameters; internal radius; ozone gas; radius 0.32 cm; response time; specific target sensing speed; target sensing time; transmission type optical gas cell; transmission type ozone sensor; Absorption; Atmospheric measurements; Equations; Gases; Mathematical model; Sensors; Time factors; Optical path length; flow rate; inlet diameter; internal diameter; response time;
Conference_Titel :
Applied Electromagnetics (APACE), 2014 IEEE Asia-Pacific Conference on
Print_ISBN :
978-1-4799-6602-8
DOI :
10.1109/APACE.2014.7043712
