Development of metal-ceramic coaxial cable Fabry-Pérot interferometric sensors for high temperature monitoring
- Univ. of Cincinnati, Cincinnati, OH (United States)
- Clemson Univ., Clemson, SC (United States)
Metal-ceramic coaxial cable Fabry-Pérot interferometric (MCCC-FPI) sensors have been developed using a stainless steel tube and a stainless steel wire as the outer and inner conductors, respectively; a tubular α-alumina insulator; and a pair of air gaps created in the insulator along the cable to serve as weak reflectors for the transmitting microwave (MW) signal. The MCCC-FPI sensors have been demonstrated for high temperature measurements using MW signals in a frequency range of 2–8 GHz. The temperature measurement is achieved by monitoring the frequency shift (Δƒ) of the MW interferogram reflected from the pair of weak reflectors. The MW sensor exhibited excellent linear dependence of Δƒ on temperature; small measurement deviations (±2.7%); and fast response in a tested range of 200–500 °C. The MCCC has the potential for further developing multipoint FPI sensors in a single-cable to achieve in situ and continuous measurement of spatially distributed temperature in harsh environments.
- Research Organization:
- Univ. of Cincinnati, Cincinnati, OH (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- FE0022993
- OSTI ID:
- 1239302
- Journal Information:
- Sensors, Vol. 15, Issue 10; ISSN 1424-8220
- Publisher:
- MDPI AGCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Distributed temperature sensing with unmodified coaxial cable based on random reflections in TDR signal
|
journal | December 2018 |
A Theoretical Study and Numerical Simulation of a Quasi-Distributed Sensor Based on the Low-Finesse Fabry-Perot Interferometer: Frequency-Division Multiplexing
|
journal | April 2017 |
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