Differential Pressure (Obstruction-Type) Meters: orifice, nozzle, venture
Differential Pressure-Pitot static tube
Variable Area Flowmeters (Rotameters)
Positive Displacement Flowmeters
Turbine Meters
Electromagnetic Flowmeters
vortex Flowmeters
Ultrasonic Flowmeters
Coriolis Flowmeter (inertial flowmeter)
Thermal Mass Flow Measurement