DP flow sensor using optical fibre Bragg grating

Citation
J. Lim et al., DP flow sensor using optical fibre Bragg grating, SENS ACTU-A, 92(1-3), 2001, pp. 102-108
Citations number
13
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Instrumentation & Measurement
Journal title
SENSORS AND ACTUATORS A-PHYSICAL
ISSN journal
0924-4247 → ACNP
Volume
92
Issue
1-3
Year of publication
2001
Pages
102 - 108
Database
ISI
SICI code
0924-4247(20010801)92:1-3<102:DFSUOF>2.0.ZU;2-E
Abstract
An optical-based differential pressure (DP) flow sensor has been developed for an optically-powered hydraulic valve monitoring and feedback control sy stem. The DP sensor employs two optical fibre single-mode Bragg grating ele ments, which are mounted on either side of the DP sensing diaphragm. The fl uid flow-rate signal is obtained in the form of differential optical wavele ngth shift, and temperature compensation is provided. The sensor has been t ested at fluid flow-rates from 0 to 800 cm(3)/s with temperature varying fr om 25 to 75 degreesC. The optically-powered hydraulic valve using the DP fl ow sensor as a monitoring system has been tested with hydraulic oil with a flow-rate up to 6 cm(3)/s at a pressure of 700 kPa. (C) 2001 Elsevier Scien ce B.V. All rights reserved.