Temperature compensated NDIR CH4 gas sensor with focused beam structure

With concave mirror surfaces, the IR light has been focused into circular shape and the intensity of IR light on the detector side has been enhanced effectively. Based upon the simulation results, a new NDIR gas sensor has been prototyped with high efficiency. Using concave mirror surfaces, the outp...

Full description

Saved in:
Bibliographic Details
Published in:Procedia engineering 2010, Vol.5, p.1248-1251
Main Authors: Park, JongSeon, Yi, SeungHwan
Format: Article
Language:English
Subjects:
Concave mirror
NDIIR methane gas sensor
Temperature coefficients
Temperature compensation
Vertical mirror
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:With concave mirror surfaces, the IR light has been focused into circular shape and the intensity of IR light on the detector side has been enhanced effectively. Based upon the simulation results, a new NDIR gas sensor has been prototyped with high efficiency. Using concave mirror surfaces, the output voltages of gas sensor are significantly increased about from 2.15 V (vertical mirror structure) to 3.62 V at 0 ppm CH4 concentration. After temperature compensation, the detection error has been reduced from 2000 ppm to less than 200 ppm within 15 °C to 35 °C.
ISSN:1877-7058
1877-7058
DOI:10.1016/j.proeng.2010.09.339