Print Email Facebook Twitter Cell Concentration Sensor for micro-bioreactors: Optical sensor system Title Cell Concentration Sensor for micro-bioreactors: Optical sensor system Author Lemmens, E. Jansen, M. Contributor Bossche, A. (mentor) Bastemeijer, J. (mentor) Faculty Electrical Engineering, Mathematics and Computer Science Department Electronic Instrumentation Group Programme Electrical Engineering Date 2014-07-04 Abstract This bachelor thesis describes the development of a sensor system for measuring the cell concentration in small bio-reactors. The study was conducted at Delft University of Technology on behalf of Applikon Biotechnology B.V. The MicroMatrix of Applikon is used for experimental determination of the optimal conditions for bioprocesses in bioreactors. Measuring the cell concentration is important because it is a direct parameter to determine the efficiency of a bioprocess. This thesis will focus only on one of the two chosen sensor techniques of the system, that is, an optical sensor using the optical density technique. Among other things, temperature compensation and an amplifier circuit have been designed for the sensor. The results show that the optical sensor is capable of measuring the cell concentration of yeast within the range of 0 - 120 g/L. This is done with an accuracy between ±10% in the range of 10 - 120 g/L and 10 - 40% between 0 - 10 g/L. Subject cellconcentrationsensorApplikonbiotechnologyoptical To reference this document use: http://resolver.tudelft.nl/uuid:f9e26a16-3207-47ad-8073-f233668d2e36 Embargo date 2019-07-03 Part of collection Student theses Document type bachelor thesis Rights (c) 2014 Lemmens, E.Jansen, M. Files PDF BSc_Thesis_Cell_Concentra ... n_2014.pdf 17.46 MB Close viewer /islandora/object/uuid:f9e26a16-3207-47ad-8073-f233668d2e36/datastream/OBJ/view