Industrial measurement techniques are often required to work on complex plants where it is important to obtain data on the processes without affecting them. This may impose the development of specific sensors and the use of sophisticated signal processing techniques in order to obtain the required information. The article describes the development and the characterisation of a measurement technique for obtaining the Residence Time Distribution Function of a reactor for post-poli-condensation of Poly-Ethylen-Terephtalate pellets. The adopted measurement technique is based on marking the reacting material by means of iron powder and uses a non-invasive magnetic sensor. Both the development and the characterisation have been carried out using a 'measurement development system' which allows the initial work to be significantly reduced. Although the description is focused on a specific problem, the proposed processing techniques may be used for various problems involving measurements related to the flow of plastic pellets. Finally, a simple complete measurement system, based on the proposed technique, is described.
|Titolo:||Measurement of residence time distribution function by means of a non invasive magnetic sensor|
|Data di pubblicazione:||1992|
|Appare nelle tipologie:||1.1 Articolo in rivista|