Sonic-Pro ultrasonic flowmeters from Blue-White Industries can be used in Doppler or transit-time operation modes. They will measure fluid flow in virtually any fluid in which sound waves can travel. Because the ultrasonic sound transducers are clamped to the outside of the pipe wall, the unit can measure flow in both clean and dirty fluids. In addition, because the meter does not come in contact with the fluid being measured, it is well suited for use in applications where harsh chemicals and other abrasive fluids are being used. The meter can be equipped with a communications package for PC remote access, allowing for program editing and downloading of data logs. Additionally, a relay package is available for process control and alarm functions. The T-Track mounting system allows for easy and accurate installation of the clamp on transducers. It includes a 320- by 240-pixel QVGA backlit LCD display and a five-button, fully configurable, tactile-switch keypad interface. 714/893-8529; www.blue-white.com.