The SONIC NOZZLE, also known as a "Critical Flow Venturi" or "Critical Flow Nozzle" is accepted internationally as a flow measurement standard and flowmeter. Originally used by the aerospace industry, Sonic Nozzles are now utilized for many diverse applications in the automotive, energy and metrology industries. Sonic Nozzles can be used as a calibration standard for gas flowmeters or any flow measurement device. By design, Sonic Nozzles are a constant volumetric flowmeter. However, with the use of a regulated pressure supply, the Sonic Nozzle becomes a "state-of-the-art" mass flowmeter.
