The HiScroll series (photo) consists of three dry and hermetically sealed scroll pumps with a nominal pumping speed of 6–20 m3/h. These vacuum pumps are characterized not only by their high performance when evacuating against atmosphere, but also by their very high energy efficiency that reduces their carbon footprint. The company is now introducing its intelligent new accessory interface AccessLink, which permits the use of a wide range of optional accessories. Its presence is automatically detected by the HiScroll’s electronics. Before this, accessories had to be configured by hand. A uniform accessory interface of this kind enhances convenience and safety during operation. A new gas-ballast valve detects the specific process requirements automatically. The valve is controlled by the vacuum pump, either according to a specific time interval or depending on the inlet pressure, in conjunction with an additional accessory, the HiScroll integrated sensor RPT 010. The automatic gas-ballast valve can also be switched manually by a higher-level controller connected to the HiScroll or by the this company’s OmniControl. — Pfeiffer Vacuum GmbH, Asslar, Germany