Process control using fibre optics and Fourier Transform Infrared (FT-IR) spectroscopy

Kemsley, E. K. ORCID: and Wilson, R. H. (1991) Process control using fibre optics and Fourier Transform Infrared (FT-IR) spectroscopy. Proceedings of SPIE - The International Society for Optical Engineering, 1575. pp. 222-223. ISSN 0277-786X

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A process control system has been constructed using optical fibres interfaced to a Fourier Transform Infrared (FT-IR) spectrometer, to achieve remote spectroscopic analysis of food samples during processing. The multi-channel interface accommodates six fibres, allowing the sequential observation of up to six samples. Novel fibre-optic sampling cells have been constructed, including transmission and attenuated total reflectance (ATR) designs. Different fibre types have been evaluated, in particular plastic clad silica (PCS) and zirconium fluoride fibres. Processes investigated have included the dilution of fruit juice concentrate, and the addition of alcohol to fruit syrup. Suitable algorithms have been written which use the results of spectroscopic measurements to control and monitor the course of each process, by actuating devices such as valves and switches.

Item Type: Article
Additional Information: Publisher Copyright: © 1991 SPIE. All rights reserved.
Uncontrolled Keywords: electronic, optical and magnetic materials,condensed matter physics,computer science applications,applied mathematics,electrical and electronic engineering ,/dk/atira/pure/subjectarea/asjc/2500/2504
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Depositing User: LivePure Connector
Date Deposited: 06 Feb 2023 09:31
Last Modified: 06 Feb 2023 09:31
DOI: 10.1117/12.56293

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