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HM 150.04 Variable Speed Centrifugal Pump
Education / GUNT Hamburg / Fluid Mechanics and Hydrology / Fundamentals of Fluid Mechanics /


  HM 150.04 contains a centrifugal pump, a ball valve on the delivery side and manometers both on intake and delivery sides. Drive is provided via a speed-controlled asynchronous motor with frequency converter. The delivery pressure is adjusted with the ball valve. The speed and the electrical power at the motor are displayed digitally. 
  The water supply and volumetric flow rate measurement are provided by the HM 150 Basic Hydraulics Bench.


Learning Objectives / Experiments

- Measurement of intake and delivery pressure
- Recording the pump capacity

- Determination of pump efficiency

- Effect of speed on pump capacity and delivery


- Recording pump characteristic curves


[1] Investitation of a centrifugal pump

[2] Speed-controlled drive with frequency converter

[3] Ball valve on the delivery side to adjust the delivery pressure

[4] Manometers on both intake and delivery sides

[5] Digital displays for speed and power

[6] Determination of flow rate via interlaboratory measuring beaker and stopwatch or via volumetric measurement with base module HM 150

[7] Closed water circuit using the base module HM 150 or via laboratory network 


Technical Data

Centrifugal pump with asynchronous motor
- nominal power: 370W

- power consumption: 680W
- max. flow rate: 3000L/h

- max. head: 3,.9m

Measuring ranges
- pressure (delivery side): -1...5bar

- pressure (intake side): -1...1,5bar
- speed: 0...3000min-1
- power: 0...1000W


Dimensions and Weight
LxWxH: 1100x640x600mm
Weight: approx. 65kg
Required for Operation

230V, 50/60Hz, 1 phase or 230V, 60Hz/CSA, 3 phase

HM 150 (closed water circuit) or water connection, drain

Scope of Delivery

1 experimental unit

1 hose

1 pipe

1 manual

Order Details

070.15004  HM 150.04  Variable Speed Centrifugal Pump