MEASUREMENT OF CO CONCENTRATION USING TUNABLE LASER ABSORPTON SPECTROSCOPY TECHNOLOGY UNDER HIGH TEMPERATURE CONDITION

YAO Hua; WANG Fei; XU Ting; JIANG Zhishen; CHI Yong; YAN Jianhua; CEN Kefa State-level Key Laboratory of Clean Energy Utilization

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MEASUREMENT OF CO CONCENTRATION USING TUNABLE LASER ABSORPTON SPECTROSCOPY TECHNOLOGY UNDER HIGH TEMPERATURE CONDITION

Thermal Power Generation Vol. 40, Issue 11, Pages: 42-45(2011)

更新时间：2025-09-28

- MEASUREMENT OF CO CONCENTRATION USING TUNABLE LASER ABSORPTON SPECTROSCOPY TECHNOLOGY UNDER HIGH TEMPERATURE CONDITION
- 作者机构：
  
  浙江大学能源清洁利用国家重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK314
- Published：2011
- 稿件说明：
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YAO Hua, WANG Fei, XU Ting, et al. MEASUREMENT OF CO CONCENTRATION USING TUNABLE LASER ABSORPTON SPECTROSCOPY TECHNOLOGY UNDER HIGH TEMPERATURE CONDITION[J]. Thermal Power Generation, 2011, 40(11): 42-45.
DOI：

YAO Hua, WANG Fei, XU Ting, et al. MEASUREMENT OF CO CONCENTRATION USING TUNABLE LASER ABSORPTON SPECTROSCOPY TECHNOLOGY UNDER HIGH TEMPERATURE CONDITION[J]. Thermal Power Generation, 2011, 40(11): 42-45. DOI：

摘要

基于可调谐二极管激光吸收谱线(TDLAS)技术和波长调制技术(WMS)

选用2 302.12nm处的吸收谱线

在1 000K高温环境下对CO浓度进行测量。结果表明:直接测量法最大误差小于5%;WMS技术测量最大误差小于3%

单位光程的最小探测极限可达20×10-6

两种方法的拟合曲线系数均大于0.99。其中

WMS方法可有效地抑制低频噪音

提高系统的灵敏度

测量值更接近于实际值。

Abstract

Based on the tunable diode laser absorption spectroscopic line(TDLASL) Techonology and the wavelength modulation spectroscopic(WMS) technology

and selecting the absorption spectroscopic line at 2302.12 μm

the measurement of CO concentration under 1000 K high temperature environment has been carried out

the result shows that the maximum error in direct measurement method is less than 5%

the maximum error in WMS method is less than 3%

the minimum detectable limit in unit optical length can reach 20×10-6.Through analysis of the two said methods

it is believed that the WMS method can effectively suppress the low frequency noise

enhancing the sensitivity of said system

making the measured value to be more close to the actual value.

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