[1] investigation and operating behaviour of pumps in various operating modes [2] single pump, series or parallel pump operation, configurable via valves [3] closed water circuit contains centrifugal pumps with drive motor and a transparent water tank [4] one pump with variable speed and one pump with fixed speed [5] adjustment of flow resistance by a valve in the delivery pipe [6] sensors for pressure on intake and delivery sides of the pumps and flow rate [7] microprocessor-based measuring technique [8] unit-specific GUNT software for data acquisition and operation via USB under Windows XP, Windows Vista or Windows 7 |