F-4400 is a battery-operated portable meter utilizing clamp-on transducers that measures flow through pipe walls. It is designed for use with pipes ranging from ½ in. to 48 in. in diameter and works with most commonly used pipe materials. It features a no-moving-parts design, does not penetrate pipes, is ideal for monitoring and testing, operates over a wide flow range, and comes with a certificate of calibration. The fluid-temperature range is −40°F to 300°F. F-4400 can be powered for up to 18 hr via the battery or operate continuously with the AC power adapter. The data logger can capture up to 300,000 points at intervals ranging from 10 sec to 5 min. Data can be downloaded to a PC via a USB.