Home           Products           Company           Contact us     
> Fundamentals of Fluid Mechanics
> Steady Incompressible Flow
> Flow around Bodies
> Steady Flow of Compressible Fluids
> Examples of Transient Flow
> Hydraulic Fluid Energy Machines
> Components in Piping Systems and Plant Design
> Fluidic Experimental Plants
> Hydraulics for Civil Engineering
Products  |  Fluid Mechanics  |  Steady Incompressible Flow  |  HM 220
HM 220 Airflow Study Unit Show data sheet (pdf file) Print page
Technical Description


The system offers comprehensive investigations on air flow. A fan draws air through a section of pipe. The air flow rate can be measured with various measuring inserts such as a nozzle/orifice, Pitot tube or iris diaphragm. The measuring inserts are connected to a multiple tube manometer using hoses; the pressure differences can then be read on the manometer. Measuring glands are also fitted to the pipe section at evenly spaced intervals; these can be used for determining pipe friction, pressure losses or velocity profiles. The tube manometer can be tilted to increase precision and can be fixed in various positions. Open jet experiments can be performed at the fan outlet.

Learning Objectives / Experiments
Measurement of air flow rate with a nozzle/orifice
Measurement of air flow rate with a Pitot tube
Measurement of air flow rate with an iris diaphragm
Measurement of pressure loss in the straight section of pipe
Measurements of pressure loss in pipe bends
Determination of pipe friction
Velocity profile in a pipe through which air is flowing
Velocity profile in an open jet
Preparation of system characteristic curves
Study unit for investigations on air flow
Mobile system, flexible in use
Numerous measuring inserts
Comprehensive range of experiments
Available accessories
HM 220.01 -- Venturi Tube
HM 220.02 -- Boundary Layer Flow
Alternative products
HL 710 -- Air Duct Systems
HM 225 -- Aerodynamics Trainer
HM 230 -- Flow of Compressible Fluids
HM 240 -- Principles of Airflow
HM 220 Air Flow Study Unit

[1] Study unit for comprehensive investigations on air flow
[2] Radial fan with speed adjustment by frequency converter

[3] Adjustable Pitot tube for open jet experiments on the fan outlet
[4] Pipe section and diverse measuring inserts along with a 16-tube manometer for pressure measurements
[5] Pipe section with evenly spaced measuring glands
[6] Various fittings included

Technical Data
Radial fan 550W
Max. volumetric flow rate 1320m/h
Max. differential pressure 730Pa
Tube manometer, 16 tubes
Measuring range 600mmWG
Area distribution 10:5:2:1
Iris diaphragm, d adjustable from 20..70mm
Orifice/nozzle d=50mm
Aperture d=30mm
Dimensions and Weight
l x w x h: 3270 x 790 x 1338 mm
Weight : approx. 151 kg
Required for Operation
230V, 50/60Hz, 1 phase or 120V, 60Hz/CSA, 1 phase
Scope of Delivery
1 study unit,
1 instruction manual
Order Details
070.22000 HM 220 Airflow Study Unit
© 2005 G.U.N.T. Gerätebau GmbH