Open AccessDevelopment of a tunable diode laser absorption sensor for online monitoring of industrial gas total emissions based on optical scintillation cross-correlation technique
Author(s) -
Zhirong Zhang,
Tao Pang,
Yang Yong,
Hua Xia,
Xiaojuan Cui,
Pengshuai Sun,
Botao Wu,
Yu Wang,
Markus W. Sigrist,
Fengzhong Dong
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.00a943
Subject(s) - tunable diode laser absorption spectroscopy , scintillation , optics , materials science , laser , absorption (acoustics) , tunable laser , diode , standard deviation , attenuation coefficient , optoelectronics , physics , detector , statistics , mathematics
We report the first application of gas total emission using a DFB diode laser for gas concentration measurements combined with two LEDs for gas velocity measurements. In situ gas total emissions and particle density measurements in an industrial pipeline using simultaneous tunable diode laser absorption spectroscopy (TDLAS) and optical scintillation cross-correlation technique (OSCC) are presented. Velocity mean values obtained are 7.59 m/s (OSCC, standard deviation is 1.37 m/s) and 8.20 m/s (Pitot tube, standard deviation is 1.47 m/s) in a steel plant pipeline for comparison. Our experiments demonstrate that the combined system of TDLAS and OSCC provides a new versatile tool for accurate measurements of total gas emissions.