ZH1701 Comparison of pumps Didactic Education Equipment For School Lab Thermal Transfer Training Equipment The experiments familiarise students with various pump types, such ascentrifugal and positive displacement pumps. The HM 362 trainer includes two centrifugal pumps, one piston pump as a positive displacement pump and a self-priming side-channel pump. The side-channel pump works primarily as a centrifugal pump and, depending on liquid level, can also act as a positive displacement pump. This means, as a special feature, the side-channel pump also permits gases to be pumped. The pump being investigated pumps water in a closed circuit. In the process, the performance data of the pump and pressure losses in the pipeline are recorded. The centrifugal pumps can also be operated in parallel or in series configuration. Each pump is driven by a separate three-phase AC motor. The speed of the motors for the centrifugal pumps is variably adjustable by a frequency converter. All motors are mounted on swivel bearings, so the torque can be measured by way of a force sensor, enabling the mechanical drive power output to be determined. One free position is likewise equipped with a reversible three-phase AC motor with variable speed. This position can be used for mounting of any pump. Experiments demonstrate the basic operating behaviour of various pump types. Relevant measured values can be read on digital displays. At the same time, the measured values can also be transmitted directly to a PC via USB. The data acquisition software is included. The performance data of the pump and losses in the pipeline are calculated by the software and represented by characteristic curves. The operating point of the pump can be determined from these characteristics. Specification experiments relating to key issues in pump engineering comparison of various pump types: centrifugal pump, piston pump, side-channel pump operation of centrifugal pumps in parallel or series configuration free position for additional pump three-phase AC motors for centrifugal pumps and additional motor with variable speed by frequency converter GUNT software for data acquisition via USB under Windows 8.1, 10 Technical data Centrifugal pump 2x
max. flow rate (Q): 300L/min max. head (H): 16,9m nominal speed: 2900min-1 Three-phase AC motor 2x, for centrifugal pump power output: 1,1kW Side-channel pump, self-priming, one-stage Q: 83,3L/min, H: 50m nominal speed: 1450min-1 Three-phase AC motor for side-channel pump power output: 1,1kW Piston pump Q: 17L/min, H: 60m nominal speed: 405min-1 Three-phase AC motor for piston pump power output: 0,55kW Three-phase AC motor, additional motor, reversible power output: 0,75kW speed range: 750…3000min-1
Measuring ranges flow rate: 0…500L/min pressure (inlet): -1…1,5bar pressure (outlet): 0…10bar torque: 0…15Nm speed: 0…3000min -1 pump electrical power consumption: 0…2kW 400V, 50Hz, 3 phases 400V, 60Hz, 3 phases 230V, 60Hz, 3 phases Dimensions and weight LxWxH: 2860x1200x1960mm Weight: approx. 430kg Required for operation PC with Windows recommended