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DP flow sensor using optical fibre Bragg grating
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DOI：10.1016/S0924-4247(01)00546-5.png)
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An optical-based differential pressure (DP) flow sensor has been developed for an optically-powered hydraulic valve monitoring and feedback control system. The DP sensor employs two optical fibre single-mode Bragg grating elements, which are mounted on either side of the DP sensing diaphragm. The fluid flow-rate signal is obtained in the form of differential optical wavelength shift, and temperature compensation is provided. The sensor has been tested at fluid flow-rates from 0 to 800 cm(3)/s with temperature varying from 25 to 75 degreesC. The optically-powered hydraulic valve using the DP flow 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 Science B.V. All rights reserved.
Keyword:
differential pressure
flow sensor
Bragg grating
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4.9
论文数:
1.5W
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3.3W
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