A Rhino-Rheo-Manometer Measuring Dynamic and Static Pressure with Capacitance Probes

A rhinomanometer for routine use is described measuring the nasal airflow V with a Prandtl-type tube. V
²
can be plotted in dependence of the transnasal pressure Δp yielding a straight line in normal cases. Furthermore, the instrument measures Δp/V
²
from which the nasal flow resistance can be deduced directly without a plotter.