Metrological assessment of TDR performance for moisture evaluation in granular materials
作者： A. Cataldo , G. Cannazza , E. De Benedetto , L. Tarricone , M. Cipressa
DOI: 10.1016/J.MEASUREMENT.2008.06.006
关键词: Granular material 、 Time domain 、 Characterization (materials science) 、 Calibration 、 Engineering 、 Process engineering 、 Forensic engineering 、 Reflectometry 、 Repeatability 、 Moisture 、 Metrology
摘要: Abstract The monitoring of moisture levels and the investigation dielectric properties materials are tasks that can be suitably performed through Time Domain Reflectometry (TDR) techniques. In particular, granular agro-foods is a major interest for several industrial applications. Despite extensive literature regarding use TDR technology, state art lacking in rigorous metrological characterization results achieved, especially area. To fill this gap, paper Authors carry out comparative analysis between content measurements obtained two different instruments on various materials. First, error contributions affecting overall performance TDR-based method discussed; intrinsic discriminated from those related to specific experimental conditions. Successively, systematic errors effects minimized preliminary calibration procedure set-up. Finally, compared analyzed statistical approach, providing both an assessment repeatability characterization. This ultimately leads characterization, particularly useful practical
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