The ultrasonic flowmeter market will experience explosive growth over the next several years, according to a study from Flow Research and Ducker Worldwide (Bloom-field Hills, MI). Revenues from ultrasonic flowmeters are projected to increase at an average annual rate of 15.3% during the next five years. The current total mar-ket size for ultrasonic flowmeters worldwide is $240 million, not including ultrasonic open channel meters.