[1] functioning and operating behaviour of a gear pump [2] closed oil circuit contains a gear pump with variable speed via frequency converter and a transparent tank [3] transparent housing for observing the pump gears [4] needle valve for adjusting the flow rate [5] overflow valve for adjusting the head [6] sensors for temperature and pressure on intake and delivery side of the pump [7] oval wheel meter as flow sensor [8] microprocessor-based measuring technique [9] unit-specific GUNT software for data acquisition and operation via USB under Windows XP, Windows Vista or Windows 7 |