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Rice, size measurement of broken grains [pdf] - MEP Instruments
Rice, size measurement of broken grains [pdf] - MEP Instruments
Rice, size measurement of broken grains [pdf] - MEP Instruments
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ApplicationNote<strong>Rice</strong>Size <strong>measurement</strong> <strong>of</strong> <strong>broken</strong> <strong>grains</strong>ApplicationSince rice is abasic foodstuff,its productquality has tobe controlledcarefully.Particle <strong>size</strong> analysis and control <strong>of</strong> theproduct appearance is carried out inalmost every plant, as the <strong>size</strong> and shapenot only influence the taste or appearance<strong>of</strong> the final products, but are alsoimportant indicators for the productionprocess itself.Demands <strong>of</strong> quality assuranceISO 7301 (EN) describes the specificationsfor rice, and the analysis methods tocontrol these specifications. Besides testsfor moisture, odour, and detection <strong>of</strong>impurities and insects, the average <strong>size</strong>and the amount <strong>of</strong> <strong>broken</strong> <strong>grains</strong> is <strong>of</strong>critical interest. Additionally the price andthe customs duties depend for example onthe amount <strong>of</strong> <strong>broken</strong>,malformed/misshapen, or chalky kernels.ISO 7301 describes manual procedures tomeasure the average <strong>size</strong> <strong>of</strong> the rice<strong>grains</strong> by using a micrometer (calliper),and to determine the amount <strong>of</strong> <strong>broken</strong>kernels. This procedure is labourintensive,provides rather unreliablestatistics (only a few kernels areanalysed), and is very subjective(influenced by operator).SolutionWith the CAMSIZER it is possible toanalyse the average length <strong>of</strong> the rice<strong>grains</strong> and the amount <strong>of</strong> <strong>broken</strong> kernelsfully automatically, independent <strong>of</strong>operator errors, and with high speed forsignificant amounts <strong>of</strong> sample.The CAMSIZER delivers reliable,reproducible and fast results in fullcompliance with the hand<strong>measurement</strong> as specified in thestandard ISO 7301 (see Fig. 1).Equipped with an AutoSampler theCAMSIZER is able to measure approx. 900samples per week. The instrument canalso be integrated in the productioncontrol and can be operated 24/7. TheAutoSampler allows even untrainedoperators to analyse samples fromdifferent places in the production easilyand frequently, by using barcodes todistinguish different sample types. Thespeed and quantity <strong>of</strong> the <strong>measurement</strong>sreduces rejects and waste, and helps tocontrol the production parameters.Fig. 1.Comparison <strong>of</strong>hand (blue) andCAMSIZER ® (red)<strong>measurement</strong> <strong>of</strong> one type<strong>of</strong> rice.Other types (wild rice,carnaroli etc.) show thesame compliance.
ApplicationNoteCAMSIZER ® - Benefits at a glance• much faster than hand <strong>measurement</strong> (x100)• identical results to hand analysis• larger samples quantities provide better statistics• high sample throughput• more objective• less manpower required• works for all tested types <strong>of</strong> rice• Fully automated, with AutoSampler• counting: almost correct number <strong>of</strong> <strong>grains</strong>(within 10%)• larger sample quantities provide better statistics• excellent reproducibility• easy to use, different s<strong>of</strong>tware levels enableoperation by unskilled personnel• maintenance free, robust designFig. 2CAMSIZER ® with AutosamplerFig. 3CAMSIZER ® :two camera system© Retsch Technology GmbH • Rheinische Strasse 43 • 42781 Haan • Germany •phone: +49 2129 5561-0 • fax: +49 2129 5561-87 • e-mail: technology@retsch.depage 2/3
ApplicationNoteMeasuring PrincipleThe patented measuring setup <strong>of</strong> theCAMSIZER – two digital cameras as anadaptive measuring unit – improves andoptimises particle analysis by digital imageprocessing. Therefore, it is possible tomeasure a wide range <strong>of</strong> particles from30 μm to 30 mm with extreme accuracy,without having to switch measuringranges or make adjustments. Thesample is fed in from the feed channel sothat all particles fall through the<strong>measurement</strong> field. During the<strong>measurement</strong> procedure the two digitalcameras (CCD) perform different tasks.The basic camera (CCD-B) records largeparticles, the zoom camera (CCD-Z) records the small ones. The contact-free optical<strong>measurement</strong> is carried out in real time and simultaneously obtains all the requiredinformation about particle <strong>size</strong> and particle shape. A modularly configurable onlineversion <strong>of</strong> the instrument has been developed to allow automated <strong>measurement</strong>s to beconducted continuously.For further information please visit our website www.retsch-technology.com or contact uspersonally:Retsch Technology GmbHRheinische Str. 43 Phone: +49 (0) 21 29 / 55 61 – 042781 Haan E-Mail: technology@retsch.comGermanyOur International Sales manager will be happy to help you with any inquiry you mayhave:Mr Gert Beckmann Phone: +49 (0) 21 29 / 55 61 – 196E-Mail: G.Beckmann@retsch.comMr Jörg Westermann Phone: +49 (0) 21 29 / 55 61 – 173E-Mail: J.Westermann@retsch.com© Retsch Technology GmbH • Rheinische Strasse 43 • 42781 Haan • Germany •phone: +49 2129 5561-0 • fax: +49 2129 5561-87 • e-mail: technology@retsch.depage 3/3
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