eprintid: 4292
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/42/92
datestamp: 2023-11-09 16:15:58
lastmod: 2023-11-09 16:15:58
status_changed: 2023-11-09 15:58:07
type: article
metadata_visibility: show
creators_name: Zubair, M.
creators_name: Tang, T.B.
title: A high resolution capacitive sensing system for the measurement of water content in crude oil
ispublished: pub
keywords: Capacitance; Crude oil; Water content, Amplitude variations; Capacitance change; Capacitance sensors; Capacitive sensing; Conversion methods; Interface circuits; Sensing techniques; Temperature variation, Sensors
note: cited By 61
abstract: This paper presents the design of a non-intrusive system to measure ultra-low water content in crude oil. The system is based on a capacitance to phase angle conversion method. Water content is measured with a capacitance sensor comprising two semi-cylindrical electrodes mounted on the outer side of a glass tube. The presence of water induces a capacitance change that in turn converts into a phase angle, with respect to a main oscillator. A differential sensing technique is adopted not only to ensure high immunity against temperature variation and background noise, but also to eliminate phase jitter and amplitude variation of the main oscillator that could destabilize the output. The complete capacitive sensing system was implemented in hardware and experiment results using crude oil samples demonstrated that a resolution of ±50 ppm of water content in crude oil was achieved by the proposed design. © 2014 by the authors; licensee MDPI, Basel, Switzerland.
date: 2014
publisher: MDPI AG
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84903398784&doi=10.3390%2fs140711351&partnerID=40&md5=f3ad57b4aca0ed9ccea9cec55b978ec3
id_number: 10.3390/s140711351
full_text_status: none
publication: Sensors (Switzerland)
volume: 14
number: 7
pagerange: 11351-11361
refereed: TRUE
issn: 14248220
citation:   Zubair, M. and Tang, T.B.  (2014) A high resolution capacitive sensing system for the measurement of water content in crude oil.  Sensors (Switzerland), 14 (7).  pp. 11351-11361.  ISSN 14248220