ULTRASONICFLOWS

Ultrasonic flowmeters are relatively new to the market. They were first introduced for industrial use in 1963 by Tokyo Keiki in Japan. In 1972, Controlotron became the first U.S. manufacturer to market ultrasonic flowmeters in the United States. In the late 1970s and early 1980s, both U.S.-based Panametrics (now GE Panametrics) and the French Ultraflux experimented with the use of ultrasonic flowmeters to measure gas flow... Initially, ultrasonic flowmeters were not well understood, and were sometimes misapplied. It was not until the 1990s that ultrasonic flowmeters began to be widely used for industrial applications... Technological improvements over the last two decades have continued to expand ultrasonic meter use.