Sci-tech Vortex Flow Meter Model FM 36 for Education

Sci-tech Vortex Flow Meter Model FM 36 makes it possible to study different methods of volumetric and mass flow measurement, as well as to compare continuous and intermittent methods. This module includes two continuous and two intermittent methods to carry out the experiments. The continuous methods include a vortex flowmeter and a variable-area flowmeter (or rotameter). A series of oscillating vortices, where the oscillating frequency is proportional to the flow rate, are generated in the vortex flowmeter. Dye or colouring is used to visualize such vortices. Intermittent methods include the measurement of volumetric and mass flows. A precision scale is used to measure the mass flow and compare the measurements. The water supply may be provided either from the Hydraulics Bench FM100 or from external source.

The vortex flow meter is installed in the water circuit of the Hydraulics Bench FM100 trainer. It operates according to the principle of Von Karman vortex shedding. Downstream of a dam body in a flow, vortices alternately form which are separated off by the flow. The frequency of the vortex separation to both sides of the dam body is proportional to the flow rate. The separated vortices alternately generate local vacuum which is measured using capacitive pressure sensors. The pressure signals are converted and indicated as the flow rate on a display. The necessary connections are provided so that the pressure loss can be determined with the Hydraulics Bench FM100.

Specifications

Ø  vortex flow meter as accessory hydraulic bench trainer

Ø  operation according to Von Karman vortex shedding

Ø  display indicating flow rate

Ø  connections to facilitate pressure loss measurement with the hydraulic bench trainer

Ø  connections to supply auxiliary power via the hydraulic bench trainer

Ø  vertical and horizontal installation possible

Ø  Structure of anodized aluminum and panels of painted steel.

Ø  PVC pipe to connect to a water supply of the Hydraulics Bench FM100

Ø  Needle valve to control the flow at the pipe inlet.

Ø  Vortex flow meter with flow oscillation made visible by dye injection.

Ø  Variable-area flow meter (rotameter), range: 150-1600 l./min.

Ø  Two regulating ball valves to control the flow in the vortex and variable-area flow meters.

Ø  Water tank at a constant height and connection for its drainage, capacity: 2.4l.

Ø  Dye or colouring tank with control valve, capacity: 0.4 l.

Ø  A control ball valve to regulate the flow at the pipe 's outlet.

Ø  Quick connection system.

Ø  A digital precision balance, range: 0-2000 gr., graduated at 1 gr. Graduated glass vessel with a capacity of 2 l. Easy and quick coupling system built-in.

Technical Specifications

1.     Max. flow rate: 4600L/h

2.     Auxiliary power: 24VDC

3.     Pipe connections: DN 32

Optional ‘Sci-Cal’ Computer Control Software & Interface 

List of Experiments:

1.- Study and experiments with a vortex flow meter.

2.- Study and experiments with a variable area flow meter.

3.- Measurement of volumetric volume flow rate.

4.- Measurement of gravimetric volume flow rate.

5.- Comparison of methods on several volumetric and mass flow measurements.

6.- Flow meters calibration.

7.- Comparison among different flowmeters.