Nonintrusive Pressure Gauges

The state of the art of pressure gauging has been advanced by the development of a new technique, and of a nonintrusive gauge based on the technique, for measuring the pressure of a fluid in the same segment of pipe in which the mass-flow rate of the fluid is also measured. NASA anticipates the first use of the technique in support of the High Flow Test Facility at White Sands Test Facility, and Kennedy Space Center has expressed interest in applying the technique on the X-33 aerospace launch vehicle. Nonintrusive pressure and flow gauges based on the present technique could also supplant older pressure and flow gauges in a variety of commercial processes and pressure systems in which the intrusion of gauges is known to affect local fluid dynamics.