Practical considerations for enhanced-resolution coil-wrapped Distributed Temperature Sensing

Koen Hilgersom, Tim Van Emmerik, Anna Solcerova, Wouter Berghuijs, John Selker, Nick Van de Giesen

Research output: Contribution to journalArticle (Academic Journal)

13 Citations (Scopus)
256 Downloads (Pure)

Abstract

Fibre optic Distributed Temperature Sensing (DTS) is widely applied in earth sciences. Many applications require a spatial resolution higher than the provided by the DTS instrument. Measurements at these higher resolutions can be achieved with a fibre optic cable helically wrapped on a cylinder. The effect of the probe construction, such as its material, shape, and diameter, on the performance has been poorly understood. In this article, we study datasets obtained from a laboratory experiment using different cable and construction diameters, and three field experiments using different construction characteristics. This study shows that the construction material, shape, diameter, and cable attachment method can have a significant influence on DTS temperature measurements. We present a qualitative and quantitative approximation of errors introduced through the choice of auxiliary construction, influence of solar radiation, coil diameter, and cable attachment method. Our results provide insight into factors that influence DTS measurements, and we present a number of solutions to minimize these errors. These practical considerations allow designers of future DTS measurement setups to improve their environmental temperature measurements.
Original languageEnglish
Pages (from-to)151-162
Number of pages12
JournalGeoscientific Instrumentation, Methods and Data Systems
Volume5
DOIs
Publication statusPublished - 20 May 2016

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