Feedback dew-point sensor utilising optimally cut plastic optical fibres

Hadjiloucas, S. ORCID: https://orcid.org/0000-0003-2380-6114, Irvine, J. and Keating, D. A. (2000) Feedback dew-point sensor utilising optimally cut plastic optical fibres. Measurement Science and Technology, 11 (1). p. 1. ISSN 1361-6501 doi: 10.1088/0957-0233/11/1/301

Abstract/Summary

A plastic optical fibre reflectance sensor that makes full use of the critical angle of the fibres is implemented to monitor dew formation on a Peltier-cooled reflector surface. The optical configuration permits isolation of optoelectronic components from the sensing head and better light coupling between the reflector and the detecting fibre, giving a better signal of the onset of dew formation on the reflector. Continuous monitoring of the rate of change in reflectance as well as the absolute reflectance signals, the use of a novel polymethyl-methacrylate-coated hydrophobic film reflector on the Peltier element and the application of feedback around the point of dew formation, further reduces the possibility of contamination of the sensor head. Under closed-loop operation, the sensor is capable of cycling around the point of dew formation at a frequency of 2.5 Hz.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/18973
Item Type	Article
Refereed	Yes
Divisions	Life Sciences > School of Biological Sciences > Department of Bio-Engineering
Publisher	IOP Publishing
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