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Keeping an eye on component cleanliness
Date:10/21/2013

analysis. The analysis sieve is installed in the system, directly in the flow of the rinsing bath, trapping any particles larger than the chosen mesh width. The built-in camera records the surface of the sieve at freely chosen measurement intervals and passes the images along to the software. The software, in turn, analyzes the size and quantity of particles and generates the results in tabular form. Alongside monitoring of purification processes, "PuriCheck" is also an asset to cleanliness analysis of components: because the individual work steps no longer need to be carried out by hand and are now automatic instead, the sample size can be increased considerably.

Optical counters of particles in fluid have been on the market for some time but thus far, equipment that works superbly under laboratory conditions is still not up to the task in the rough and tumble of the day-to-day production environment. "The systems currently available are very sensitive to air bubbles or oil drops in the water. And that can significantly falsify the measurement result," Rochowicz points out. Using the IPA solution, air bubbles or oil drops can simply slip through the analytical sieve; this keeps them from erroneously being identified as particles.

The functional principle of "PuriCheck" has already proven itself in multiple pilot applications. The Researchers have brought Ngele Mechanik a medium-sized company with a long history of project experience involving particles on board for the step to a marketable product. The main focus in final developments is upon optimizing the system in terms of user-friendliness and robustness. With this in mind, for instance, the project partners have built in an easy-to-operate mechanism that can be used to rinse away any particles trapped in the analytical sieve. This prevents overloading or clogging and ensures smooth measurement behavior throughout the purification process. The project partners will be presenting this ready-
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Contact: Dr. Markus Rochowicz
markus.rochowicz@ipa.fraunhofer.de
49-711-970-1175
Fraunhofer-Gesellschaft
Source:Eurekalert  

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