In situ and on-line monitoring of CO in an industrial glass furnace by mid-infrared difference-frequency generation laser spectroscopy.
A compact mid-infrared (MIR) laser spectrometer based on difference-frequency generation (DFG) is applied as a portable and sensitive gas sensor for industrial process control and pollutant monitoring. We demonstrate the performance of such a MIR DFG gas sensor by recording the absorption spectra of the carbon monoxide (CO) P(28) absorption line in the atmosphere of a gas-fired glass melting furnace. For a gas temperature of approximately 1100 degrees C, the CO concentration in the recuperator channel is measured to be 400 parts per million.
Khorsandi
Alireza
A
Institut für Physik und Physikalische Technologien, Technische Universität Clausthal, Leibnizstrasse 4, Clausthal-Zellerfeld D-38678, Germany. khorsandi.alireza@tu-clausthal.de
Willer
Ulrike
U
Wondraczek
Lothar
L
Schade
Wolfgang
W