The DXN portable ultrasonic flow and heat meter from Dynasonics, a division of Racine Federated Inc., includes hybrid metering technology that automatically switches between transit-time and Doppler modes, as needed. The meter also includes a 7-inch, full-color touch-screen, the ability to store site-specific settings using plain text, and an advanced software interface that adapts to customer needs. It is built on a rugged hardware platform that uses modern microprocessing and digital-signal processing with response times of 20 milliseconds and faster. The flowmeter is currently available in a variety of kit configurations, from a basic kit that includes two sets of transit- time transducers, cabling and a compact carrying case, to a complete kit that includes transit-time, Doppler, RTD, and wall-thickness gauge. –