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Effect of sampling line characteristics on the dynamic monitoring of fluid concentrations / Harpreet S. Juneja in Industrial & engineering chemistry research, Vol. 48 N° 11 (Juin 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 11 (Juin 2009) . - pp. 5481–5488 Titre : Effect of sampling line characteristics on the dynamic monitoring of fluid concentrations Type de document : texte imprimé Auteurs : Harpreet S. Juneja, Auteur ; Junpin Yao, Auteur ; Farhang Shadman, Auteur Année de publication : 2009 Article en page(s) : pp. 5481–5488 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Sampling  line  Fluid  concentrations  Dynamic  monitoring Résumé : A novel approach is developed and demonstrated to characterize the sampling line effects during dynamic monitoring of fluid concentrations. The “sampling line” in this study refers to all components between the point of fluid sampling and the point of analyzer sensor. In general, sampling lines introduce errors in measurements by altering the sample properties due to the fluid transport in the line as well as the adsorption and desorption of fluid constituents on the surfaces of the sampling components that come into contact with the sample fluid. A methodology based on a sampling line simulator is developed for taking these effects into account and correcting the measurements. The model is validated by direct experimental measurements using several different analyzers under various conditions. The sampling line simulator can be used to analyze the effect of various sampling configurations and operating conditions; this would be helpful in the design of sampling lines and their location. An algorithm is proposed that can be used to convert concentration values measured and reported by the analyzer to the concentration values at the point of sampling that are the actual and desired values. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8016169 [article] Effect of sampling line characteristics on the dynamic monitoring of fluid concentrations [texte imprimé] / Harpreet S. Juneja, Auteur ; Junpin Yao, Auteur ; Farhang Shadman, Auteur . - 2009 . - pp. 5481–5488. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 11 (Juin 2009) . - pp. 5481–5488 Mots-clés : Sampling  line  Fluid  concentrations  Dynamic  monitoring Résumé : A novel approach is developed and demonstrated to characterize the sampling line effects during dynamic monitoring of fluid concentrations. The “sampling line” in this study refers to all components between the point of fluid sampling and the point of analyzer sensor. In general, sampling lines introduce errors in measurements by altering the sample properties due to the fluid transport in the line as well as the adsorption and desorption of fluid constituents on the surfaces of the sampling components that come into contact with the sample fluid. A methodology based on a sampling line simulator is developed for taking these effects into account and correcting the measurements. The model is validated by direct experimental measurements using several different analyzers under various conditions. The sampling line simulator can be used to analyze the effect of various sampling configurations and operating conditions; this would be helpful in the design of sampling lines and their location. An algorithm is proposed that can be used to convert concentration values measured and reported by the analyzer to the concentration values at the point of sampling that are the actual and desired values. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8016169