Sierra Instruments” Innova-Sonic in-line ultrasonic flowmeter is a digital correlation transit-time system designed to provide high performance at an affordable price for general industrial applications. Features accuracy of +/-0.5 percent of reading, repeatability of +/-0.1 FPS, an operating temperature range of 32 F to 140 F and a bi-directional flow range of zero to 33 FPS liquids (zero to 10 MPS). The instrument is a good fit for clean liquid applications and is tolerant of liquids with a small amount of air bubbles or suspended solids. The instrument features the proprietary PicoFlight measurement technology, which allows the ultrasonic transit-time signal to be measured in picoseconds (one trillionth of a second) rather than typical nanoseconds (one billionth of a second). This improvement enables better response to changes in flow and superior low-flow detection.