The vane impeller flow meter is installed in the water circuit of the trainer.
The kinetic energy of the flowing water causes angular rotation of the paddle wheel, the frequency of which is proportional to the flow rate of the water. The angular frequency is measured by a ring magnet and converted by a Hall sensor into an analogue voltage signal. This voltage signal corresponds to the flow rate of the fluid.
A display indicates the flow rate. The necessary connections are provided so that the pressure loss can be determined. The transparent front makes the paddle wheel visible, thus aiding understanding of the operating principle.
Learning Objectives / Experiments
Familiarisation with the principle of operation
Flow measurement
Plotting a pressure loss curve
Comparison with other flow meters
Specification
Paddle wheel flow meter as accessory for flow meter trainer
Non-contact recording of rotation speed by ring magnet and Hall sensor
Display indicating flow rate
Connections to facilitate pressure loss measurement
Connections to supply auxiliary power via flow meter trainer