Variable Speed Centrifugal Pump

Variable Speed Centrifugal Pump for Educational Laboratory.

Product Code:


Variable Speed Centrifugal Pump

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 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 inter laboratory measuring beaker and stopwatch or via volumetric measurement with base           module.

7.   Closed water circuit using the base module 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

Closed Water circuit) or water connection, drain