Extrusion International 3-2020

17 Extrusion International 3/2020 Visit us: www.bst.group QUALITY ASSURANCE FOR FILM EXTRUSION Hena 50 and 70 are single-stage, oil-sealed rotary vane pumps which were specially developed for the demanding requirements of mass spectrometer systems. They achieve pumping speeds of between 32 and 59 m³/h, depending on their size and speed of rotation. Their integrated oil mist separator ensures clean exhaust air. They are equipped with a frequency converter that enables them to be used world- wide with single-phase input and identical pump capacity for 50 and 60 Hz. A constantly high flow rate in the target pressure range, ad- justable pumping speeds and low final vacuum contribute to the instrument’s reliable high performance. Long mainte- nance intervals and operating hours are ensured by the high oil volume in the pumps and their low oil temperature during operation. Hena 50 and 70 can increase the overall availability of the instrument through their high ruggedness and reliability. At the same time, they are easy to integrate due to their low noise level and efficient oil separation. Both Hena 50 and Hena 70 are certified according to UL and IEC 61010. Powerful Vacuum Pumps for Mass Spectrometer Systems Pfeiffer Vacuum GmbH www.pfeiffer-vacuum.com Pfeiffer Vacuum Hena 50 rotary vane pump