MR-HM 150.04 Centrifugal pump Didactic Equipment Fluids Engineering Training Equipment Description • characteristic curve of a centrifugal pump • variable speed via frequency converter Centrifugal pumps are turbomachinesthat are used for conveying fluids. TheMR-HM 150.04 unit can be used to study acentrifugal pump and to record a typicalpump characteristic curve. The experimental unit includes a selfpriming centrifugal pump, a ball valve onthe outlet side and manometers on theinlet and outlet side. It is driven by anasynchronous motor. The speed is infinitely adjustable by using a frequency converter. A ball valve is used to adjust thehead. In experiments, the operating behaviourof the pump as a function of the flowrate is studied and displayed in characteristic curves. The motor’s speed andelectrical power are displayed digitally. Pressures on the inlet and outlet sideare displayed on two manometers. The experimental unit is positioned easily and securely on the work surface ofthe MR-HM 150 base module. The pumpdraws in water from the tank on thebase module MR-HM 150. The flow rate isdetermined volumetrically by flowingback into the measuring tank onMR-HM 150. Learning objectives/experiments • recording the pump characteristiccurve at a constant pump speed · measuring the inlet and outlet pressure · determining the flow rate • recording the pump characteristics fordifferent speeds • power and efficiency curves · measuring the electrical drive power · determining the hydraulic power · calculating the efficiency Specification [1] investigation of a centrifugal pump [2] drive with variable speed via frequency converter [3] ball valve to adjust the head [4] manometers on the inlet and outlet side of thepump [5] digital display of speed and power [6] flow rate determined by base module MR-HM 150 [7] water supply using base module MR-HM 150 Technical data Centrifugal pump, self-priming • max. flow rate: 3000L/h • max. head: 36,9m Asynchronous motor • nominal power: 370W Measuring ranges • pressure (outlet side): -1…5bar • pressure (inlet side): -1…1,5bar • speed: 0…3000min-1 • power: 0…1000W Measuring ranges • pressure (outlet): -1…5bar • pressure (inlet): -1…1,5bar • speed: 0…3000min-1 • power: 0…1000W 230V, 50Hz, 1 phase 230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase UL/CSA optional LxWxH: 1100x640x600mm Weight: approx. 46kg Required for operation MR-HM 150 (closed water circuit) Scope of delivery 1 experimental unit 1 set of instructional material
