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    A fibre optic tiltmeter [for volcano monitoring]

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    Authors
    Ur-Rehman, Masood
    Ahmed, W.
    Ajmal, Tahmina
    Issue Date
    1996
    Subjects
    geophysical equipment
    optical modulation
    fibre optics
    
    Metadata
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    Abstract
    A simple, rugged and highly sensitive fibre optic tiltmeter has been designed and its prototype model tested. The sensor intensity modulates the light with the change in the level of Hg surface with tilt. Hence, producing a detector output proportional to the tilt angle. The most important attribute of the tiltmeter is its ability to measure tilts of the order of microradians with a high degree of precision, hence making it an important tool for geophysical monitoring. Besides, the dielectric construction and inherent compatibility with fibre optic telemetry make the sensor suitable for monitoring the conditions of hostile and remote sites of volcanoes. The prototype model has been developed using rugged and easy to handle plastic fibres and the results obtained were satisfactory with a sensitivity of approximately 1.0 mV/μrad
    Citation
    Rehman, M., Ahmed, W. and Ajmal, T. (1996) 'A fibre optic tiltmeter [for volcano monitoring]', Instrumentation and Measurement Technology Conference, IMTC-96, Quality Measurements: The Indispensable Bridge between Theory and Reality, Brussels, Belgium. Brussels: IEEE, vol.2, pp.1076-1079
    Publisher
    IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
    URI
    http://hdl.handle.net/10547/292425
    DOI
    10.1109/IMTC.1996.507330
    Additional Links
    http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=507330
    Type
    Conference papers, meetings and proceedings
    Language
    en
    ISBN
    0780333128
    ae974a485f413a2113503eed53cd6c53
    10.1109/IMTC.1996.507330
    Scopus Count
    Collections
    Centre for Wireless Research (CWR)

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