<P>Internal pressure speedwave®dirc Sample temperature registered directly, contact-free and in real time With its patented Speedwave DIRC thermo- meter Berghof is taking a new direction. Thermal radiation in the mid infrared range in which TFM™-PTFE and quartz materials cannot absorb the radiation are measured contact-free. Filtering out of infrared radiation from the surface of the pressure vessels makes this process very precise and reliable. This permits the direct and real time detection of the temperature of each individual sample. Based on the temperature information the magnetron output is continually adjus- ted, thus achieving effective temperature control. speedwave®opc Optical, contact-free pressure measurement The patented Speedwave OPC optical pressure measurement and control process specially developed by Berghof for microwave digestions functions comple- tely contact-free. A glass ring, on which the vessels internal pressure acts, is used here as a sensor element. The glass ring firmly integrated in the lid of the pressure vessel is illuminated by a beam of polarised light. The colour change in the polarised light resulting from the effect of the pressure is measured, so that the pressure in each vessel can be directly detected. The information of increased pressure is incorporated in the power control system and the magnetron output continuously adjusted. This hinders activation of the rupture disc and prevents loss of samples. Measurement Polarized light Glass ring Filter infrared radiation Measurement</p> <UL><LI><a href="http://www.stallionpublishers.com/publication/1613/lptoonvhm/1/1/">Front-Cover</a></LI> <LI><a href="http://www.stallionpublishers.com/publication/1613/lptoonvhm/2/2/">Inside-Front-Cover</a></LI> <LI><a href="http://www.stallionpublishers.com/publication/1613/lptoonvhm/3/3/">Page-3</a></LI> <LI><a href="http://www.stallionpublishers.com/publication/1613/lptoonvhm/4/4/">Page-4</a></LI> <LI><a href="http://www.stallionpublishers.com/publication/1613/lptoonvhm/5/5/">Page-5</a></LI> <LI><a href="http://www.stallionpublishers.com/publication/1613/lptoonvhm/6/6/">Page-6</a></LI> <LI><a href="http://www.stallionpublishers.com/publication/1613/lptoonvhm/7/7/">Page-7</a></LI> <LI><a href="http://www.stallionpublishers.com/publication/1613/lptoonvhm/8/8/">Back-Cover</a></LI> <LI><a href="http://www.stallionpublishers.com/publications/1613/x/sitemap.xml" target="_blank">site map</a></LI> </UL>

 

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