The superior drive concept of the HiLobe pumps can shorten the pump-down times by about 20 % compared to conventional Roots pumps, especially for rapid evacuations more
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Process monitoring of water vapour concentration
Due to its high flexibility, the mass spectrometer can be used to monitor the water vapor concentration as well as other existing gases (e.g., nitrogen, oxygen). By monitoring the water vapor content, the end point of the main and subsequent drying process can be determined much more accurately than is possible with the help of comparative pressure measurement, for example. This provides new opportunities for optimization, particularly, in the development of freeze-drying processes.
Detect silicone oil leaks in time
The shelves of production freeze dryers are predominantly tempered with silicone oil. Temperature and pressure fluctuations as well as mechanical stress during the positioning of the adjusting plates cause leaks over time. Due to the initially small amounts of silicone oil, several batches can already be contaminated before the leak is detected. It is important to detect possible silicone leakages as soon as they occur and thus avoid high follow-up costs. The PrismaPro from Pfeiffer Vacuum with proven mass spectrometer technology is an outstanding solution for this leak detection.
Pfeiffer Vacuum works closely with the manufacturers of freeze-drying systems when integrating the mass spectrometer into the production system. Pfeiffer Vacuum delivers the complete mass spectrometer system including turbopumping station, measuring technology and control valve and provides support for integration into the controller of the freeze dryer.
The PrismaPro produces precise measurements with a detection limit of up to 3E-15 hPa. Depending on the application, one can choose between 1-100, 1-200 or 1-300 amu. The smallest contaminations in a vacuum system can be detected in a minimum of time using Faraday detectors or secondary electron multipliers. For monitoring total pressure and for protection of the mass spectrometer, a gauge can be connected directly to the PrismaPro.
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Vacuum produces conditions that are similar to those encountered in outer space and are indispensable in the production of numerous high-tech products and many items that are used in daily life. Manufacturing processes or solar cells, semiconductors, DVDs and thermally insulated glass, as ... more