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Advances in Sensors for Biotechnology, IEE Colloquium on

Date 16 Mar 1988

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Displaying Results 1 - 7 of 7
  • Applications of time domain reflectometry in process control

    Page(s): 3/1 - 3/4
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (216 KB)  

    Describes a fluid level sensor which provides a new approach to fluid level measurement. It has no moving parts, requires no maintenance, the sensing element can be easily manufactured and it is capable of measuring more than one fluid level and fluid levels in the presence of contaminants. The control electronics can be remote from the sensing element and the output from the control electronics can be either digital or analogue. One electronics unit can be designed to service many sensing elements and, since most of the cost resides in the electronics, this considerably reduces the cost per sensor. This sensor can be readily integrated into a process control system and provide continuous information on fluid levels in many vessels View full abstract»

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  • Chemical sensors and gas sensors for process control in biotechnology

    Page(s): 2/1 - 2/8
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (344 KB)  

    Discusses the potential applications of the following instruments developed for other demanding applications: US instrumentation developed for industry; gas measurement methods from the fields of environmental monitoring and combustion control; nuclear instruments developed for mining and related industries; robotic systems developed for the nuclear industry; and adaptive control and feed-forward control techniques View full abstract»

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  • Biosensors for industrial monitoring and control

    Page(s): 5/1 - 5/3
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    A variety of biosensor configurations have been explored which may find applications ranging from fermentation monitoring and control of separation processes to shelf life prediction and quality assurance. Two general categories of biological components are distinguished: biocatalysts and bioreceptors. A range of physical and chemical transducers are available to monitor the biological recognition event and can be broadly classified into electrochemical, optical, thermal and piezoelectric devices. A number of examples where biosensors have been successfully applied to industrial monitoring and control are discussed View full abstract»

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  • Laser light scattering instrumentation for biotechnology applications

    Page(s): 4/1 - 4/3
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (104 KB)  

    Discusses the progress made in the size and cost reduction of the four basic system components of dynamic light scattering instrumentation: laser, optics, detector, and signal processor. The developments of miniature solid-state laser diodes for photon correlation use monomode optical fibre dynamic light scattering system, avalanche photodiodes for photon correlation use, and electronic chips for correlators are described View full abstract»

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  • IEE Colloquium on `Advances in Sensors for Biotechnology' (Digest No.38)

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    The following topics were dealt with: biotechnology instrumentation and engineering; gas sensors for process controls; time domain reflectometry based sensor; laser light scattering; instrumentation; biosensors for industrial monitoring and process control; and biosensors developments and future requirements View full abstract»

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  • Engineering and instrumentation in biotechnology

    Page(s): 1/1 - 1/3
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    Discusses the development of biosensing devices which runs parallel to activities in physical measurement techniques. Biosensors rely on interfacial properties (electro-optic and electro-chemical) and require direct contact with the sample. Surface electrode arrays are sensitised to particular analytes by the deposition of suitable affinity and electron mediation compounds. Devices based on ferrocene as an electron transfer mediator in glucose- oxidase modified carbon electrodes have operated successfully in fermentation monitoring. Laser optical techniques are also developing as powerful analytical tools in bioprocessing and product assay. Photon correlation spectroscopy determines cell size and population distributions by monitoring the diffusion properties of particles undergoing Brownian motion. Immunological processes have been studied as well as cell morphology, proteins and other high molecular weight materials. Innovative approaches are also evident in the current studies aimed at selective filtration of suspensions View full abstract»

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  • Current and future requirements in sensor technology [biotechnology]

    Page(s): 6/1 - 6/3
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    The future sensor needs of biotechnology based industries are surveyed. Biosensors developed for physico-chemical, biological and biochemical environments, respectively, are discussed View full abstract»

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