171035 ⎘
Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave by measuring transit time of acoustical waves Sing-around-systems
Estimating flow rates of a liquid in a conduit
#2Apparatus and method for measuring relative speed between a fluid and a reference
#3Flow measurement and control with bubble detection
#4Flow measurement and control with bubble detection
#5Determination of the transit time difference in an ultrasonic flow sensor with multiple zero crossing detection
#6Ultrasonic flowmeter including stable flow rate calculation means based on instantaneous flow rate