Experiments with a gear pump Record characteristics of a rotary positive displacement pump Features - illustrative model of a gear pump - closed oil circuit - GUNT software for data acquisition, visualisation and operation - part of the GUNT Labline fluid energy machines Learning objectives/experiments - principle of operation of a gear pump - recording of pump characteristics - relationship between head and speed - effect of pressure limitation - determination of efficiencies Specification [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 at inlet and outlet of the pump [7] oval wheel meter as flow sensor [8] due to integrated microprocessor-based instrumentation no additional devices with error-prone wiring are required [9] display and evaluation of the measured values as well as operation of the unit via software [10] GUNT software with control functions and data acquisition via USB under Windows 10 Technical data Gear pump with speed-controlled drive - power consumption: 370W - nominal speed: 100...750min-1 - max. flow rate: 32cm3 per revolution - max. head: approx. 80m Overflow valve: 0...5,5bar Measuring ranges - pressure (inlet): ±1bar - pressure (outlet): 0...5bar - flow rate: 0...25L/min - temperature: 0...100°C 230V, 50Hz, 1 phase 230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase UL/CSA optional LxWxH: 670x590x750mm Weight: approx. 50kg