Fiber optic sensors for process monitoring and control

In the past decade a broad range of sensing applications have been reported which utilize optical fiber based sensors. 1''2 These applications range from the measurement of a variety of physical parameters to the quantitative determination of chemical and biochemical species. This paper discusses recent work performed at Eastman Kodak CoiTpany concerning development and testing of fiberoptic sensors in process monitoring and control environments. Topics include sensing mechanisms sensor design environmental considerations and sensor performance characterization in process environments. Sensing mechanisms described inlude optical time domain reflectometer (OTDR) distributed fiber-optic sensing multiplexable reflective fiberpair sensing and photoncorrelation spectroscopy. Distributed fiber-optic sensing applications including temperature pressure strain humidity chemicals and distributed alarms are discussed. Reflective fiberpair sensors described include edge location distance and vibration. Use of photoncorrelation techniques with fiberoptic sensors are also described and process applications of these techniques are presented. 1.

[1]  Aaas News,et al.  Book Reviews , 1893, Buffalo Medical and Surgical Journal.

[2]  A. Rogers.  Polarisation optical time domain reflectometry , 1980 .

[3]  M Gottlieb,et al.  Temperature sensing in optical fibers using cladding and jacket loss effects. , 1981, Applied optics.

[4]  R. Pecora,et al.  Laser Light Scattering and Macromolecular Brownian Motion , 1971 .

[5]  A. Hartog.  A distributed temperature sensor based on liquid-core optical fibers , 1983, Journal of Lightwave Technology.

[6]  R. Reuter,et al.  Monitoring humidity by polyimide lightguides , 1988 .

[7]  Frank V. Bright,et al.  A New Fluorescence Sensor for Quantification of Atmospheric Humidity , 1989 .

[8]  Quan Zhou,et al.  Porous Fiber Optic for a High Sensitivity Humidity Sensor , 1988 .

[9]  K. S. Fletcher,et al.  Optical sensor for the determination of moisture , 1985 .

[10]  Michael A. Marcus.  Process monitoring and control with fiber optics , 1991, Other Conferences.

[11]  David S. Ballantine,et al.  An Optical Waveguide Humidity Detector. , 1985 .

[12]  M. D. Rourke,et al.  Optical time domain reflectometer. , 1977, Applied optics.

[13]  T. G. Mungall,et al.  A Spectrophotometric Method for the Determination of Moisture and Active Hydrogen , 1961 .

[14]  Michael A. Marcus,et al.  Real-Time Distributed Fiber-Optic Temperature Sensing In The Process Environment , 1990, Other Conferences.

[15]  P. Di Vita,et al.  The backscattering technique: its field of applicability in fibre diagnostics and attenuation measurements , 1980 .

[16]  H. Kawakami,et al.  Humidity-sensing effects of optical fibres with microporous SiO2 cladding , 1988 .

[17]  David N. Payne,et al.  Distributed temperature sensor using Nd3+ -doped optical fibre , 1986 .

[18]  J. N. Ross,et al.  Distributed optical fibre Raman temperature sensor using a semiconductor light source and detector , 1985 .

[19]  Alan R. Mickelson,et al.  Backscatter readout from serial microbending sensors , 1984 .

[20]  Frank Kvasnik,et al.  Distributed Chemical Sensing Utilising Evanescent Wave Interactions , 1990, Other Conferences.

[21]  John Rarity,et al.  On-line photon correlation spectroscopy using fibre-optic probes , 1988 .

[22]  Hiroshi Ito,et al.  Fiber Humidity Sensor Using Fluorescent Dye-Doped Plastics , 1989 .

[23]  A. Dandridge,et al.  Distributed and Multiplexed Fiber-Optic Sensors , 1988 .

[24]  R.J.G. Carr.  Fibre optic sensors for the characterization of particle size and flow velocity , 1990 .

[25]  J G Rarity,et al.  Determination of protein size in chromatography column eluants by on-line photon correlation spectroscopy. , 1988, Analytical biochemistry.