A variable gas flow generator (GFG) for dynamiccharacterization of flowmeters is described. The GFG is anelectromechanical system consisting of a spherical chamberwhere air, compressed by four cylinder-piston systems, flowsthrough a circular aperture.Experimental data show that the pistons displacement of GFGcan accurately follow a sinusoidal waveform up to 22 Hz(RMSE<0.16 mm). Flow rates generated by the abovementioned displacement waveforms can also be assumedsinusoidal.After the experimental characterization, the GFG is used toassess the frequency response of an orifice meter (OM)designed to be used in neonatal ventilation. Experimental datashow that the OM has good dynamic response, being able todetect sinusoidal flow rates up to 22 Hz. With reference to thedynamic response, the ad hoc designed OM satisfies therequirements for measuring flow in neonatal ventilation.
Design and experimental characterization of a gas flow generator to calibrate flow meters for neonatal ventilation
Schena E;Silvestri S
2012-01-01
Abstract
A variable gas flow generator (GFG) for dynamiccharacterization of flowmeters is described. The GFG is anelectromechanical system consisting of a spherical chamberwhere air, compressed by four cylinder-piston systems, flowsthrough a circular aperture.Experimental data show that the pistons displacement of GFGcan accurately follow a sinusoidal waveform up to 22 Hz(RMSE<0.16 mm). Flow rates generated by the abovementioned displacement waveforms can also be assumedsinusoidal.After the experimental characterization, the GFG is used toassess the frequency response of an orifice meter (OM)designed to be used in neonatal ventilation. Experimental datashow that the OM has good dynamic response, being able todetect sinusoidal flow rates up to 22 Hz. With reference to thedynamic response, the ad hoc designed OM satisfies therequirements for measuring flow in neonatal ventilation.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
