Title :
Process composition monitoring at microwave frequencies: a waveguide cutoff method and calibration procedure
Author :
Jean, Buford Randall
Author_Institution :
Rhino Analytics, Austin, TX, USA
Abstract :
A versatile and robust microwave instrument for measuring the composition of various mixtures of known constituents is presented. Measurement is achieved by examining the propagation cutoff characteristics of a section of waveguide that is typically comprised of a section of process piping that is filled with the material under test. A calibration method that is simple to implement for industrial applications is presented and described in detail. Data from several successful commercialized applications are included. The microwave cutoff method offers significant advantages over more traditional microwave-measurement techniques.
Keywords :
calibration; dielectric measurement; microwave measurement; process monitoring; calibration procedure; dielectric measurements; industrial applications; microwave frequencies; microwave instrument; microwave measurements; process composition monitoring; process monitoring; process piping; propagation cutoff characteristics; spectroscopy; waveguide cutoff method; Calibration; Commercialization; Instruments; Materials testing; Microwave frequencies; Microwave measurements; Microwave propagation; Microwave theory and techniques; Monitoring; Robustness; Dielectric measurements; microwave measurements; process monitoring; spectroscopy; waveguides;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2005.860860
