Measurements of instantaneous flow and volume of air inhaled and exhaled by a person.Portable spirograph Differential pressure sensor (does not require replacement of measuring grids, turbines), registration and viewing of data, the formation of any research templates, selection of the scale of norms, and graphical display of norms in flow-volume coordinates in real time and in the subsequent processing of data, auto-completion, comparative evaluation of data in dynamics and when conducting different samples, plotting of changes in calculated parameters, exp. USB connection
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