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HM 284 Series and Parallel Connected Pumps
Education / GUNT Hamburg / Fluid Mechanics and Hydrology / Hydraulic Fluid Energy Machines /

The HM 284 demonstration unit facilitates the measurement of pump curves in various operating modes. The unit comprises 2 centrifugal pumps that are connected together via a system of pipes. Shut off valves permit the pumps to be operated in series or in parallel. Electronic sensors provide relevant pressures and  the temperature of the pumped medium are measured values. The software for data acquisition and visualisation makes the experiments especially clear and enables fast execution of experiments with reliable results.


Learning Objectives / Experiments

- investigation of the operating behaviour of pumps
  * on the operation of one pump
  * when operated in series
  * when operated in parallel
- recording of pump curves
- determination of the efficiencies of one pump


[1] experimental unit for series, parallel and individual operation of centrifugal pumps
[2] one pump with adjustable speed and one pump with fixed speed

[3] measuring of pressure and flow rate

[4] processing of measured data on a PC
[5] LabVIEW software for data acquisition via USB under Windows XP, Windows Vista or Windows 7

Technical Data

Pumps with motors

- power consumption, both pumps: 650W

- pump with adjustable speed: 0...3.300min-1

- max. flow rate: 40L/min with one pump

- max. head: 10m

Pipes and fittings made of PVC
Tank for water: ca. 15L


Measuring ranges

- pressure (intake side): -1...1bar

- pressure (delivery side): 2x -5...5bar

- flow rate: 10...140L/min


Dimensions and Weight
LxWxH: 670x600x670mm
Weight: approx. 62kg
Required for Operation
230V, 50/60Hz, 1 phase or 120V, 60Hz/CSA, 1 phase
Scope of Delivery

1 experimental unit
1 LabVIEW software CD + USB cable
1 instruction manual

Order Details

070.28400  HM 284  Series and Parallel

                                  Connected Pumps