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Proceedings Paper

Sample interface in on-line process sensing: liquid phase and gas phase sampling of optically homogenous processes
Author(s): Richard D. Driver; G. Dewey; David A. Greenberg; John D. Stark
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Paper Abstract

The quantification of chemical processes in real time using infrared fiber-remote absorption spectroscopy requires the accurate sampling of the chemical species at a well defined and reproducible absorption pathlength. Sensors and sampling methods are described which are tailored to the type of process and process conditions being monitored. The optical fiber parameters which effect process sampling and measurement accuracy are reviewed. Sampling techniques are discussed for homogeneous liquid phase and gas phase measurements. The use of flow through cells for side stream monitoring and immersible probes for in-line monitoring of liquid phase streams are covered in detail. Sensor pathlength calibration of a variable path immersible transmission probe is discussed.

Paper Details

Date Published: 31 December 1993
PDF: 15 pages
Proc. SPIE 2069, Optical Methods for Chemical Process Control, (31 December 1993); doi: 10.1117/12.166284
Show Author Affiliations
Richard D. Driver, Galileo Electro-Optics Corp. (United States)
G. Dewey, Galileo Electro-Optics Corp. (United States)
David A. Greenberg, Galileo Electro-Optics Corp. (United States)
John D. Stark, Galileo Electro-Optics Corp. (United States)

Published in SPIE Proceedings Vol. 2069:
Optical Methods for Chemical Process Control
Stuart Farquharson; Jeremy M. Lerner, Editor(s)

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