caa a22 4500 465813917 CHVBK 20180323112122.0 cr unu---uuuuu 170327e19901101xx s 000 0 eng 10.1007/BF01329297 doi (NATIONALLICENCE)springer-10.1007/BF01329297 Dealy J. Department of Chemical Engineering, McGill University, 3480 University Street, H3A 2A7, Montreal, Quebec, Canada aut Challenges in process rheometry [Elektronische Daten] [J. Dealy] Process rheometers are useful as process sensors for on-line quality control as well as for process control. Unlike passive sensors for equilibrium properties, such as temperature and pressure, a rheometer must subject the material of interest to a controlled deformation while monitoring the resulting stress. To accomplish this in a compact, robust device suitable for use in a manufacturing environment is not straightforward. Problems that arise in processing applications include the need for frequent sample renewal without interference from the measurement or the process itself and the fact that the process stream is usually under pressure. Considerable ingenuity has been applied to developing rheometers to meet these requirements. However, there remain many potential applications for which presently available units are not suitable. In particular, special problems arise when a very fast response is required, when the fluid being processed is non-Newtonian or has a very high viscosity, and when it is a multiphase system, as for example in the case of mineral slurries. In addition, in food processing and fermentation applications, all the exposed surfaces of the rheometer must be sterilizable. Possible solutions to these problems are described. Steinkopff, 1990 R heometers nationallicence o n-line nationallicence i n-line nationallicence n on-Newtonian fluids nationallicence s uspensions nationallicence Rheologica Acta Steinkopff-Verlag 29/6(1990-11-01), 519-522 0035-4511 29:6<519 1990 29 397 https://doi.org/10.1007/BF01329297 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01329297 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Dealy J. Department of Chemical Engineering, McGill University, 3480 University Street, H3A 2A7, Montreal, Quebec, Canada aut NATIONALLICENCE 773 0- Rheologica Acta Steinkopff-Verlag 29/6(1990-11-01), 519-522 0035-4511 29:6<519 1990 29 397 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer